diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
index 61be8a8..755a967 100644
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -1,4637 +1,4332 @@
-# Test enhancements related to descriptors and new-style classes
-
-# XXX Please, please, please, someone convert this to unittest style!
-
-from test.test_support import verify, vereq, verbose, TestFailed, TESTFN, get_original_stdout
-from copy import deepcopy
-import warnings
 import types
+import unittest
+import warnings
 
-warnings.filterwarnings("ignore",
-         r'complex divmod\(\), // and % are deprecated$',
-         DeprecationWarning, r'(<string>|%s)$' % __name__)
+from copy import deepcopy
+from test import test_support
 
-def veris(a, b):
-    if a is not b:
-        raise TestFailed, "%r is %r" % (a, b)
 
-def testunop(a, res, expr="len(a)", meth="__len__"):
-    if verbose: print "checking", expr
-    dict = {'a': a}
-    vereq(eval(expr, dict), res)
-    t = type(a)
-    m = getattr(t, meth)
-    while meth not in t.__dict__:
-        t = t.__bases__[0]
-    vereq(m, t.__dict__[meth])
-    vereq(m(a), res)
-    bm = getattr(a, meth)
-    vereq(bm(), res)
+class OperatorsTest(unittest.TestCase):
 
-def testbinop(a, b, res, expr="a+b", meth="__add__"):
-    if verbose: print "checking", expr
-    dict = {'a': a, 'b': b}
+    def __init__(self, *args, **kwargs):
+        unittest.TestCase.__init__(self, *args, **kwargs)
+        self.binops = {
+            'add': '+',
+            'sub': '-',
+            'mul': '*',
+            'div': '/',
+            'divmod': 'divmod',
+            'pow': '**',
+            'lshift': '<<',
+            'rshift': '>>',
+            'and': '&',
+            'xor': '^',
+            'or': '|',
+            'cmp': 'cmp',
+            'lt': '<',
+            'le': '<=',
+            'eq': '==',
+            'ne': '!=',
+            'gt': '>',
+            'ge': '>=',
+        }
 
-    # XXX Hack so this passes before 2.3 when -Qnew is specified.
-    if meth == "__div__" and 1/2 == 0.5:
-        meth = "__truediv__"
+        for name, expr in self.binops.items():
+            if expr.islower():
+                expr = expr + "(a, b)"
+            else:
+                expr = 'a %s b' % expr
+            self.binops[name] = expr
 
-    vereq(eval(expr, dict), res)
-    t = type(a)
-    m = getattr(t, meth)
-    while meth not in t.__dict__:
-        t = t.__bases__[0]
-    vereq(m, t.__dict__[meth])
-    vereq(m(a, b), res)
-    bm = getattr(a, meth)
-    vereq(bm(b), res)
+        self.unops = {
+            'pos': '+',
+            'neg': '-',
+            'abs': 'abs',
+            'invert': '~',
+            'int': 'int',
+            'long': 'long',
+            'float': 'float',
+            'oct': 'oct',
+            'hex': 'hex',
+        }
 
-def testternop(a, b, c, res, expr="a[b:c]", meth="__getslice__"):
-    if verbose: print "checking", expr
-    dict = {'a': a, 'b': b, 'c': c}
-    vereq(eval(expr, dict), res)
-    t = type(a)
-    m = getattr(t, meth)
-    while meth not in t.__dict__:
-        t = t.__bases__[0]
-    vereq(m, t.__dict__[meth])
-    vereq(m(a, b, c), res)
-    bm = getattr(a, meth)
-    vereq(bm(b, c), res)
+        for name, expr in self.unops.items():
+            if expr.islower():
+                expr = expr + "(a)"
+            else:
+                expr = '%s a' % expr
+            self.unops[name] = expr
 
-def testsetop(a, b, res, stmt="a+=b", meth="__iadd__"):
-    if verbose: print "checking", stmt
-    dict = {'a': deepcopy(a), 'b': b}
-    exec stmt in dict
-    vereq(dict['a'], res)
-    t = type(a)
-    m = getattr(t, meth)
-    while meth not in t.__dict__:
-        t = t.__bases__[0]
-    vereq(m, t.__dict__[meth])
-    dict['a'] = deepcopy(a)
-    m(dict['a'], b)
-    vereq(dict['a'], res)
-    dict['a'] = deepcopy(a)
-    bm = getattr(dict['a'], meth)
-    bm(b)
-    vereq(dict['a'], res)
+    def setUp(self):
+        self.original_filters = warnings.filters[:]
+        warnings.filterwarnings("ignore",
+                 r'complex divmod\(\), // and % are deprecated$',
+                 DeprecationWarning, r'(<string>|%s)$' % __name__)
 
-def testset2op(a, b, c, res, stmt="a[b]=c", meth="__setitem__"):
-    if verbose: print "checking", stmt
-    dict = {'a': deepcopy(a), 'b': b, 'c': c}
-    exec stmt in dict
-    vereq(dict['a'], res)
-    t = type(a)
-    m = getattr(t, meth)
-    while meth not in t.__dict__:
-        t = t.__bases__[0]
-    vereq(m, t.__dict__[meth])
-    dict['a'] = deepcopy(a)
-    m(dict['a'], b, c)
-    vereq(dict['a'], res)
-    dict['a'] = deepcopy(a)
-    bm = getattr(dict['a'], meth)
-    bm(b, c)
-    vereq(dict['a'], res)
+    def tearDown(self):
+        warnings.filters = self.original_filters
 
-def testset3op(a, b, c, d, res, stmt="a[b:c]=d", meth="__setslice__"):
-    if verbose: print "checking", stmt
-    dict = {'a': deepcopy(a), 'b': b, 'c': c, 'd': d}
-    exec stmt in dict
-    vereq(dict['a'], res)
-    t = type(a)
-    while meth not in t.__dict__:
-        t = t.__bases__[0]
-    m = getattr(t, meth)
-    vereq(m, t.__dict__[meth])
-    dict['a'] = deepcopy(a)
-    m(dict['a'], b, c, d)
-    vereq(dict['a'], res)
-    dict['a'] = deepcopy(a)
-    bm = getattr(dict['a'], meth)
-    bm(b, c, d)
-    vereq(dict['a'], res)
+    def unop_test(self, a, res, expr="len(a)", meth="__len__"):
+        d = {'a': a}
+        self.assertEqual(eval(expr, d), res)
+        t = type(a)
+        m = getattr(t, meth)
 
-def class_docstrings():
-    class Classic:
-        "A classic docstring."
-    vereq(Classic.__doc__, "A classic docstring.")
-    vereq(Classic.__dict__['__doc__'], "A classic docstring.")
+        # Find method in parent class
+        while meth not in t.__dict__:
+            t = t.__bases__[0]
 
-    class Classic2:
-        pass
-    verify(Classic2.__doc__ is None)
+        self.assertEqual(m, t.__dict__[meth])
+        self.assertEqual(m(a), res)
+        bm = getattr(a, meth)
+        self.assertEqual(bm(), res)
 
-    class NewStatic(object):
-        "Another docstring."
-    vereq(NewStatic.__doc__, "Another docstring.")
-    vereq(NewStatic.__dict__['__doc__'], "Another docstring.")
+    def binop_test(self, a, b, res, expr="a+b", meth="__add__"):
+        d = {'a': a, 'b': b}
 
-    class NewStatic2(object):
-        pass
-    verify(NewStatic2.__doc__ is None)
+        # XXX Hack so this passes before 2.3 when -Qnew is specified.
+        if meth == "__div__" and 1/2 == 0.5:
+            meth = "__truediv__"
 
-    class NewDynamic(object):
-        "Another docstring."
-    vereq(NewDynamic.__doc__, "Another docstring.")
-    vereq(NewDynamic.__dict__['__doc__'], "Another docstring.")
+        if meth == '__divmod__': pass
 
-    class NewDynamic2(object):
-        pass
-    verify(NewDynamic2.__doc__ is None)
+        self.assertEqual(eval(expr, d), res)
+        t = type(a)
+        m = getattr(t, meth)
+        while meth not in t.__dict__:
+            t = t.__bases__[0]
+        self.assertEqual(m, t.__dict__[meth])
+        self.assertEqual(m(a, b), res)
+        bm = getattr(a, meth)
+        self.assertEqual(bm(b), res)
 
-def lists():
-    if verbose: print "Testing list operations..."
-    testbinop([1], [2], [1,2], "a+b", "__add__")
-    testbinop([1,2,3], 2, 1, "b in a", "__contains__")
-    testbinop([1,2,3], 4, 0, "b in a", "__contains__")
-    testbinop([1,2,3], 1, 2, "a[b]", "__getitem__")
-    testternop([1,2,3], 0, 2, [1,2], "a[b:c]", "__getslice__")
-    testsetop([1], [2], [1,2], "a+=b", "__iadd__")
-    testsetop([1,2], 3, [1,2,1,2,1,2], "a*=b", "__imul__")
-    testunop([1,2,3], 3, "len(a)", "__len__")
-    testbinop([1,2], 3, [1,2,1,2,1,2], "a*b", "__mul__")
-    testbinop([1,2], 3, [1,2,1,2,1,2], "b*a", "__rmul__")
-    testset2op([1,2], 1, 3, [1,3], "a[b]=c", "__setitem__")
-    testset3op([1,2,3,4], 1, 3, [5,6], [1,5,6,4], "a[b:c]=d", "__setslice__")
+    def ternop_test(self, a, b, c, res, expr="a[b:c]", meth="__getslice__"):
+        d = {'a': a, 'b': b, 'c': c}
+        self.assertEqual(eval(expr, d), res)
+        t = type(a)
+        m = getattr(t, meth)
+        while meth not in t.__dict__:
+            t = t.__bases__[0]
+        self.assertEqual(m, t.__dict__[meth])
+        self.assertEqual(m(a, b, c), res)
+        bm = getattr(a, meth)
+        self.assertEqual(bm(b, c), res)
 
-def dicts():
-    if verbose: print "Testing dict operations..."
-    testbinop({1:2}, {2:1}, -1, "cmp(a,b)", "__cmp__")
-    testbinop({1:2,3:4}, 1, 1, "b in a", "__contains__")
-    testbinop({1:2,3:4}, 2, 0, "b in a", "__contains__")
-    testbinop({1:2,3:4}, 1, 2, "a[b]", "__getitem__")
-    d = {1:2,3:4}
-    l1 = []
-    for i in d.keys(): l1.append(i)
-    l = []
-    for i in iter(d): l.append(i)
-    vereq(l, l1)
-    l = []
-    for i in d.__iter__(): l.append(i)
-    vereq(l, l1)
-    l = []
-    for i in dict.__iter__(d): l.append(i)
-    vereq(l, l1)
-    d = {1:2, 3:4}
-    testunop(d, 2, "len(a)", "__len__")
-    vereq(eval(repr(d), {}), d)
-    vereq(eval(d.__repr__(), {}), d)
-    testset2op({1:2,3:4}, 2, 3, {1:2,2:3,3:4}, "a[b]=c", "__setitem__")
+    def setop_test(self, a, b, res, stmt="a+=b", meth="__iadd__"):
+        d = {'a': deepcopy(a), 'b': b}
+        exec stmt in d
+        self.assertEqual(d['a'], res)
+        t = type(a)
+        m = getattr(t, meth)
+        while meth not in t.__dict__:
+            t = t.__bases__[0]
+        self.assertEqual(m, t.__dict__[meth])
+        d['a'] = deepcopy(a)
+        m(d['a'], b)
+        self.assertEqual(d['a'], res)
+        d['a'] = deepcopy(a)
+        bm = getattr(d['a'], meth)
+        bm(b)
+        self.assertEqual(d['a'], res)
 
-def dict_constructor():
-    if verbose:
-        print "Testing dict constructor ..."
-    d = dict()
-    vereq(d, {})
-    d = dict({})
-    vereq(d, {})
-    d = dict({1: 2, 'a': 'b'})
-    vereq(d, {1: 2, 'a': 'b'})
-    vereq(d, dict(d.items()))
-    vereq(d, dict(d.iteritems()))
-    d = dict({'one':1, 'two':2})
-    vereq(d, dict(one=1, two=2))
-    vereq(d, dict(**d))
-    vereq(d, dict({"one": 1}, two=2))
-    vereq(d, dict([("two", 2)], one=1))
-    vereq(d, dict([("one", 100), ("two", 200)], **d))
-    verify(d is not dict(**d))
-    for badarg in 0, 0L, 0j, "0", [0], (0,):
+    def set2op_test(self, a, b, c, res, stmt="a[b]=c", meth="__setitem__"):
+        d = {'a': deepcopy(a), 'b': b, 'c': c}
+        exec stmt in d
+        self.assertEqual(d['a'], res)
+        t = type(a)
+        m = getattr(t, meth)
+        while meth not in t.__dict__:
+            t = t.__bases__[0]
+        self.assertEqual(m, t.__dict__[meth])
+        d['a'] = deepcopy(a)
+        m(d['a'], b, c)
+        self.assertEqual(d['a'], res)
+        d['a'] = deepcopy(a)
+        bm = getattr(d['a'], meth)
+        bm(b, c)
+        self.assertEqual(d['a'], res)
+
+    def set3op_test(self, a, b, c, d, res, stmt="a[b:c]=d", meth="__setslice__"):
+        dictionary = {'a': deepcopy(a), 'b': b, 'c': c, 'd': d}
+        exec stmt in dictionary
+        self.assertEqual(dictionary['a'], res)
+        t = type(a)
+        while meth not in t.__dict__:
+            t = t.__bases__[0]
+        m = getattr(t, meth)
+        self.assertEqual(m, t.__dict__[meth])
+        dictionary['a'] = deepcopy(a)
+        m(dictionary['a'], b, c, d)
+        self.assertEqual(dictionary['a'], res)
+        dictionary['a'] = deepcopy(a)
+        bm = getattr(dictionary['a'], meth)
+        bm(b, c, d)
+        self.assertEqual(dictionary['a'], res)
+
+    def test_lists(self):
+        # Testing list operations...
+        # Asserts are within individual test methods
+        self.binop_test([1], [2], [1,2], "a+b", "__add__")
+        self.binop_test([1,2,3], 2, 1, "b in a", "__contains__")
+        self.binop_test([1,2,3], 4, 0, "b in a", "__contains__")
+        self.binop_test([1,2,3], 1, 2, "a[b]", "__getitem__")
+        self.ternop_test([1,2,3], 0, 2, [1,2], "a[b:c]", "__getslice__")
+        self.setop_test([1], [2], [1,2], "a+=b", "__iadd__")
+        self.setop_test([1,2], 3, [1,2,1,2,1,2], "a*=b", "__imul__")
+        self.unop_test([1,2,3], 3, "len(a)", "__len__")
+        self.binop_test([1,2], 3, [1,2,1,2,1,2], "a*b", "__mul__")
+        self.binop_test([1,2], 3, [1,2,1,2,1,2], "b*a", "__rmul__")
+        self.set2op_test([1,2], 1, 3, [1,3], "a[b]=c", "__setitem__")
+        self.set3op_test([1,2,3,4], 1, 3, [5,6], [1,5,6,4], "a[b:c]=d",
+                        "__setslice__")
+
+    def test_dicts(self):
+        # Testing dict operations...
+        self.binop_test({1:2}, {2:1}, -1, "cmp(a,b)", "__cmp__")
+        self.binop_test({1:2,3:4}, 1, 1, "b in a", "__contains__")
+        self.binop_test({1:2,3:4}, 2, 0, "b in a", "__contains__")
+        self.binop_test({1:2,3:4}, 1, 2, "a[b]", "__getitem__")
+
+        d = {1:2, 3:4}
+        l1 = []
+        for i in d.keys():
+            l1.append(i)
+        l = []
+        for i in iter(d):
+            l.append(i)
+        self.assertEqual(l, l1)
+        l = []
+        for i in d.__iter__():
+            l.append(i)
+        self.assertEqual(l, l1)
+        l = []
+        for i in dict.__iter__(d):
+            l.append(i)
+        self.assertEqual(l, l1)
+        d = {1:2, 3:4}
+        self.unop_test(d, 2, "len(a)", "__len__")
+        self.assertEqual(eval(repr(d), {}), d)
+        self.assertEqual(eval(d.__repr__(), {}), d)
+        self.set2op_test({1:2,3:4}, 2, 3, {1:2,2:3,3:4}, "a[b]=c",
+                        "__setitem__")
+
+    # Tests for unary and binary operators
+    def number_operators(self, a, b, skip=[]):
+        dict = {'a': a, 'b': b}
+
+        for name, expr in self.binops.items():
+            if name not in skip:
+                name = "__%s__" % name
+                if hasattr(a, name):
+                    res = eval(expr, dict)
+                    self.binop_test(a, b, res, expr, name)
+
+        for name, expr in self.unops.items():
+            if name not in skip:
+                name = "__%s__" % name
+                if hasattr(a, name):
+                    res = eval(expr, dict)
+                    self.unop_test(a, res, expr, name)
+
+    def test_ints(self):
+        # Testing int operations...
+        self.number_operators(100, 3)
+        # The following crashes in Python 2.2
+        self.assertEqual((1).__nonzero__(), 1)
+        self.assertEqual((0).__nonzero__(), 0)
+        # This returns 'NotImplemented' in Python 2.2
+        class C(int):
+            def __add__(self, other):
+                return NotImplemented
+        self.assertEqual(C(5L), 5)
         try:
-            dict(badarg)
+            C() + ""
         except TypeError:
             pass
-        except ValueError:
-            if badarg == "0":
-                # It's a sequence, and its elements are also sequences (gotta
-                # love strings <wink>), but they aren't of length 2, so this
-                # one seemed better as a ValueError than a TypeError.
-                pass
-            else:
-                raise TestFailed("no TypeError from dict(%r)" % badarg)
         else:
-            raise TestFailed("no TypeError from dict(%r)" % badarg)
-
-    try:
-        dict({}, {})
-    except TypeError:
-        pass
-    else:
-        raise TestFailed("no TypeError from dict({}, {})")
-
-    class Mapping:
-        # Lacks a .keys() method; will be added later.
-        dict = {1:2, 3:4, 'a':1j}
-
-    try:
-        dict(Mapping())
-    except TypeError:
-        pass
-    else:
-        raise TestFailed("no TypeError from dict(incomplete mapping)")
-
-    Mapping.keys = lambda self: self.dict.keys()
-    Mapping.__getitem__ = lambda self, i: self.dict[i]
-    d = dict(Mapping())
-    vereq(d, Mapping.dict)
-
-    # Init from sequence of iterable objects, each producing a 2-sequence.
-    class AddressBookEntry:
-        def __init__(self, first, last):
-            self.first = first
-            self.last = last
-        def __iter__(self):
-            return iter([self.first, self.last])
-
-    d = dict([AddressBookEntry('Tim', 'Warsaw'),
-              AddressBookEntry('Barry', 'Peters'),
-              AddressBookEntry('Tim', 'Peters'),
-              AddressBookEntry('Barry', 'Warsaw')])
-    vereq(d, {'Barry': 'Warsaw', 'Tim': 'Peters'})
-
-    d = dict(zip(range(4), range(1, 5)))
-    vereq(d, dict([(i, i+1) for i in range(4)]))
-
-    # Bad sequence lengths.
-    for bad in [('tooshort',)], [('too', 'long', 'by 1')]:
+            self.fail("NotImplemented should have caused TypeError")
+        import sys
         try:
-            dict(bad)
-        except ValueError:
+            C(sys.maxint+1)
+        except OverflowError:
             pass
         else:
-            raise TestFailed("no ValueError from dict(%r)" % bad)
+            self.fail("should have raised OverflowError")
 
-def test_dir():
-    if verbose:
-        print "Testing dir() ..."
-    junk = 12
-    vereq(dir(), ['junk'])
-    del junk
+    def test_longs(self):
+        # Testing long operations...
+        self.number_operators(100L, 3L)
 
-    # Just make sure these don't blow up!
-    for arg in 2, 2L, 2j, 2e0, [2], "2", u"2", (2,), {2:2}, type, test_dir:
-        dir(arg)
+    def test_floats(self):
+        # Testing float operations...
+        self.number_operators(100.0, 3.0)
 
-    # Try classic classes.
-    class C:
-        Cdata = 1
-        def Cmethod(self): pass
+    def test_complexes(self):
+        # Testing complex operations...
+        self.number_operators(100.0j, 3.0j, skip=['lt', 'le', 'gt', 'ge',
+                                                  'int', 'long', 'float'])
 
-    cstuff = ['Cdata', 'Cmethod', '__doc__', '__module__']
-    vereq(dir(C), cstuff)
-    verify('im_self' in dir(C.Cmethod))
+        class Number(complex):
+            __slots__ = ['prec']
+            def __new__(cls, *args, **kwds):
+                result = complex.__new__(cls, *args)
+                result.prec = kwds.get('prec', 12)
+                return result
+            def __repr__(self):
+                prec = self.prec
+                if self.imag == 0.0:
+                    return "%.*g" % (prec, self.real)
+                if self.real == 0.0:
+                    return "%.*gj" % (prec, self.imag)
+                return "(%.*g+%.*gj)" % (prec, self.real, prec, self.imag)
+            __str__ = __repr__
 
-    c = C()  # c.__doc__ is an odd thing to see here; ditto c.__module__.
-    vereq(dir(c), cstuff)
+        a = Number(3.14, prec=6)
+        self.assertEqual(repr(a), "3.14")
+        self.assertEqual(a.prec, 6)
 
-    c.cdata = 2
-    c.cmethod = lambda self: 0
-    vereq(dir(c), cstuff + ['cdata', 'cmethod'])
-    verify('im_self' in dir(c.Cmethod))
+        a = Number(a, prec=2)
+        self.assertEqual(repr(a), "3.1")
+        self.assertEqual(a.prec, 2)
 
-    class A(C):
-        Adata = 1
-        def Amethod(self): pass
+        a = Number(234.5)
+        self.assertEqual(repr(a), "234.5")
+        self.assertEqual(a.prec, 12)
 
-    astuff = ['Adata', 'Amethod'] + cstuff
-    vereq(dir(A), astuff)
-    verify('im_self' in dir(A.Amethod))
-    a = A()
-    vereq(dir(a), astuff)
-    verify('im_self' in dir(a.Amethod))
-    a.adata = 42
-    a.amethod = lambda self: 3
-    vereq(dir(a), astuff + ['adata', 'amethod'])
+    def test_spam_lists(self):
+        # Testing spamlist operations...
+        import copy, xxsubtype as spam
 
-    # The same, but with new-style classes.  Since these have object as a
-    # base class, a lot more gets sucked in.
-    def interesting(strings):
-        return [s for s in strings if not s.startswith('_')]
+        def spamlist(l, memo=None):
+            import xxsubtype as spam
+            return spam.spamlist(l)
 
-    class C(object):
-        Cdata = 1
-        def Cmethod(self): pass
+        # This is an ugly hack:
+        copy._deepcopy_dispatch[spam.spamlist] = spamlist
 
-    cstuff = ['Cdata', 'Cmethod']
-    vereq(interesting(dir(C)), cstuff)
+        self.binop_test(spamlist([1]), spamlist([2]), spamlist([1,2]), "a+b",
+                       "__add__")
+        self.binop_test(spamlist([1,2,3]), 2, 1, "b in a", "__contains__")
+        self.binop_test(spamlist([1,2,3]), 4, 0, "b in a", "__contains__")
+        self.binop_test(spamlist([1,2,3]), 1, 2, "a[b]", "__getitem__")
+        self.ternop_test(spamlist([1,2,3]), 0, 2, spamlist([1,2]), "a[b:c]",
+                        "__getslice__")
+        self.setop_test(spamlist([1]), spamlist([2]), spamlist([1,2]), "a+=b",
+                       "__iadd__")
+        self.setop_test(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "a*=b",
+                       "__imul__")
+        self.unop_test(spamlist([1,2,3]), 3, "len(a)", "__len__")
+        self.binop_test(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "a*b",
+                       "__mul__")
+        self.binop_test(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "b*a",
+                       "__rmul__")
+        self.set2op_test(spamlist([1,2]), 1, 3, spamlist([1,3]), "a[b]=c",
+                        "__setitem__")
+        self.set3op_test(spamlist([1,2,3,4]), 1, 3, spamlist([5,6]),
+                   spamlist([1,5,6,4]), "a[b:c]=d", "__setslice__")
+        # Test subclassing
+        class C(spam.spamlist):
+            def foo(self): return 1
+        a = C()
+        self.assertEqual(a, [])
+        self.assertEqual(a.foo(), 1)
+        a.append(100)
+        self.assertEqual(a, [100])
+        self.assertEqual(a.getstate(), 0)
+        a.setstate(42)
+        self.assertEqual(a.getstate(), 42)
 
-    c = C()
-    vereq(interesting(dir(c)), cstuff)
-    verify('im_self' in dir(C.Cmethod))
+    def test_spam_dicts(self):
+        # Testing spamdict operations...
+        import copy, xxsubtype as spam
+        def spamdict(d, memo=None):
+            import xxsubtype as spam
+            sd = spam.spamdict()
+            for k, v in d.items():
+                sd[k] = v
+            return sd
+        # This is an ugly hack:
+        copy._deepcopy_dispatch[spam.spamdict] = spamdict
 
-    c.cdata = 2
-    c.cmethod = lambda self: 0
-    vereq(interesting(dir(c)), cstuff + ['cdata', 'cmethod'])
-    verify('im_self' in dir(c.Cmethod))
+        self.binop_test(spamdict({1:2}), spamdict({2:1}), -1, "cmp(a,b)",
+                       "__cmp__")
+        self.binop_test(spamdict({1:2,3:4}), 1, 1, "b in a", "__contains__")
+        self.binop_test(spamdict({1:2,3:4}), 2, 0, "b in a", "__contains__")
+        self.binop_test(spamdict({1:2,3:4}), 1, 2, "a[b]", "__getitem__")
+        d = spamdict({1:2,3:4})
+        l1 = []
+        for i in d.keys():
+            l1.append(i)
+        l = []
+        for i in iter(d):
+            l.append(i)
+        self.assertEqual(l, l1)
+        l = []
+        for i in d.__iter__():
+            l.append(i)
+        self.assertEqual(l, l1)
+        l = []
+        for i in type(spamdict({})).__iter__(d):
+            l.append(i)
+        self.assertEqual(l, l1)
+        straightd = {1:2, 3:4}
+        spamd = spamdict(straightd)
+        self.unop_test(spamd, 2, "len(a)", "__len__")
+        self.unop_test(spamd, repr(straightd), "repr(a)", "__repr__")
+        self.set2op_test(spamdict({1:2,3:4}), 2, 3, spamdict({1:2,2:3,3:4}),
+                   "a[b]=c", "__setitem__")
+        # Test subclassing
+        class C(spam.spamdict):
+            def foo(self): return 1
+        a = C()
+        self.assertEqual(a.items(), [])
+        self.assertEqual(a.foo(), 1)
+        a['foo'] = 'bar'
+        self.assertEqual(a.items(), [('foo', 'bar')])
+        self.assertEqual(a.getstate(), 0)
+        a.setstate(100)
+        self.assertEqual(a.getstate(), 100)
 
-    class A(C):
-        Adata = 1
-        def Amethod(self): pass
+class ClassPropertiesAndMethods(unittest.TestCase):
 
-    astuff = ['Adata', 'Amethod'] + cstuff
-    vereq(interesting(dir(A)), astuff)
-    verify('im_self' in dir(A.Amethod))
-    a = A()
-    vereq(interesting(dir(a)), astuff)
-    a.adata = 42
-    a.amethod = lambda self: 3
-    vereq(interesting(dir(a)), astuff + ['adata', 'amethod'])
-    verify('im_self' in dir(a.Amethod))
+    def test_python_dicts(self):
+        # Testing Python subclass of dict...
+        self.assert_(issubclass(dict, dict))
+        self.assert_(isinstance({}, dict))
+        d = dict()
+        self.assertEqual(d, {})
+        self.assert_(d.__class__ is dict)
+        self.assert_(isinstance(d, dict))
+        class C(dict):
+            state = -1
+            def __init__(self_local, *a, **kw):
+                if a:
+                    self.assertEqual(len(a), 1)
+                    self_local.state = a[0]
+                if kw:
+                    for k, v in kw.items():
+                        self_local[v] = k
+            def __getitem__(self, key):
+                return self.get(key, 0)
+            def __setitem__(self_local, key, value):
+                self.assert_(isinstance(key, type(0)))
+                dict.__setitem__(self_local, key, value)
+            def setstate(self, state):
+                self.state = state
+            def getstate(self):
+                return self.state
+        self.assert_(issubclass(C, dict))
+        a1 = C(12)
+        self.assertEqual(a1.state, 12)
+        a2 = C(foo=1, bar=2)
+        self.assertEqual(a2[1] == 'foo' and a2[2], 'bar')
+        a = C()
+        self.assertEqual(a.state, -1)
+        self.assertEqual(a.getstate(), -1)
+        a.setstate(0)
+        self.assertEqual(a.state, 0)
+        self.assertEqual(a.getstate(), 0)
+        a.setstate(10)
+        self.assertEqual(a.state, 10)
+        self.assertEqual(a.getstate(), 10)
+        self.assertEqual(a[42], 0)
+        a[42] = 24
+        self.assertEqual(a[42], 24)
+        N = 50
+        for i in range(N):
+            a[i] = C()
+            for j in range(N):
+                a[i][j] = i*j
+        for i in range(N):
+            for j in range(N):
+                self.assertEqual(a[i][j], i*j)
 
-    # Try a module subclass.
-    import sys
-    class M(type(sys)):
-        pass
-    minstance = M("m")
-    minstance.b = 2
-    minstance.a = 1
-    names = [x for x in dir(minstance) if x not in ["__name__", "__doc__"]]
-    vereq(names, ['a', 'b'])
+    def test_python_lists(self):
+        # Testing Python subclass of list...
+        class C(list):
+            def __getitem__(self, i):
+                return list.__getitem__(self, i) + 100
+            def __getslice__(self, i, j):
+                return (i, j)
+        a = C()
+        a.extend([0,1,2])
+        self.assertEqual(a[0], 100)
+        self.assertEqual(a[1], 101)
+        self.assertEqual(a[2], 102)
+        self.assertEqual(a[100:200], (100,200))
 
-    class M2(M):
-        def getdict(self):
-            return "Not a dict!"
-        __dict__ = property(getdict)
-
-    m2instance = M2("m2")
-    m2instance.b = 2
-    m2instance.a = 1
-    vereq(m2instance.__dict__, "Not a dict!")
-    try:
-        dir(m2instance)
-    except TypeError:
-        pass
-
-    # Two essentially featureless objects, just inheriting stuff from
-    # object.
-    vereq(dir(None), dir(Ellipsis))
-
-    # Nasty test case for proxied objects
-    class Wrapper(object):
-        def __init__(self, obj):
-            self.__obj = obj
-        def __repr__(self):
-            return "Wrapper(%s)" % repr(self.__obj)
-        def __getitem__(self, key):
-            return Wrapper(self.__obj[key])
-        def __len__(self):
-            return len(self.__obj)
-        def __getattr__(self, name):
-            return Wrapper(getattr(self.__obj, name))
-
-    class C(object):
-        def __getclass(self):
-            return Wrapper(type(self))
-        __class__ = property(__getclass)
-
-    dir(C()) # This used to segfault
-
-binops = {
-    'add': '+',
-    'sub': '-',
-    'mul': '*',
-    'div': '/',
-    'mod': '%',
-    'divmod': 'divmod',
-    'pow': '**',
-    'lshift': '<<',
-    'rshift': '>>',
-    'and': '&',
-    'xor': '^',
-    'or': '|',
-    'cmp': 'cmp',
-    'lt': '<',
-    'le': '<=',
-    'eq': '==',
-    'ne': '!=',
-    'gt': '>',
-    'ge': '>=',
-    }
-
-for name, expr in binops.items():
-    if expr.islower():
-        expr = expr + "(a, b)"
-    else:
-        expr = 'a %s b' % expr
-    binops[name] = expr
-
-unops = {
-    'pos': '+',
-    'neg': '-',
-    'abs': 'abs',
-    'invert': '~',
-    'int': 'int',
-    'long': 'long',
-    'float': 'float',
-    'oct': 'oct',
-    'hex': 'hex',
-    }
-
-for name, expr in unops.items():
-    if expr.islower():
-        expr = expr + "(a)"
-    else:
-        expr = '%s a' % expr
-    unops[name] = expr
-
-def numops(a, b, skip=[]):
-    dict = {'a': a, 'b': b}
-    for name, expr in binops.items():
-        if name not in skip:
-            name = "__%s__" % name
-            if hasattr(a, name):
-                res = eval(expr, dict)
-                testbinop(a, b, res, expr, name)
-    for name, expr in unops.items():
-        if name not in skip:
-            name = "__%s__" % name
-            if hasattr(a, name):
-                res = eval(expr, dict)
-                testunop(a, res, expr, name)
-
-def ints():
-    if verbose: print "Testing int operations..."
-    numops(100, 3)
-    # The following crashes in Python 2.2
-    vereq((1).__nonzero__(), 1)
-    vereq((0).__nonzero__(), 0)
-    # This returns 'NotImplemented' in Python 2.2
-    class C(int):
-        def __add__(self, other):
-            return NotImplemented
-    vereq(C(5L), 5)
-    try:
-        C() + ""
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "NotImplemented should have caused TypeError"
-    import sys
-    try:
-        C(sys.maxint+1)
-    except OverflowError:
-        pass
-    else:
-        raise TestFailed, "should have raised OverflowError"
-
-def longs():
-    if verbose: print "Testing long operations..."
-    numops(100L, 3L)
-
-def floats():
-    if verbose: print "Testing float operations..."
-    numops(100.0, 3.0)
-
-def complexes():
-    if verbose: print "Testing complex operations..."
-    numops(100.0j, 3.0j, skip=['lt', 'le', 'gt', 'ge', 'int', 'long', 'float'])
-    class Number(complex):
-        __slots__ = ['prec']
-        def __new__(cls, *args, **kwds):
-            result = complex.__new__(cls, *args)
-            result.prec = kwds.get('prec', 12)
-            return result
-        def __repr__(self):
-            prec = self.prec
-            if self.imag == 0.0:
-                return "%.*g" % (prec, self.real)
-            if self.real == 0.0:
-                return "%.*gj" % (prec, self.imag)
-            return "(%.*g+%.*gj)" % (prec, self.real, prec, self.imag)
-        __str__ = __repr__
-
-    a = Number(3.14, prec=6)
-    vereq(repr(a), "3.14")
-    vereq(a.prec, 6)
-
-    a = Number(a, prec=2)
-    vereq(repr(a), "3.1")
-    vereq(a.prec, 2)
-
-    a = Number(234.5)
-    vereq(repr(a), "234.5")
-    vereq(a.prec, 12)
-
-def spamlists():
-    if verbose: print "Testing spamlist operations..."
-    import copy, xxsubtype as spam
-    def spamlist(l, memo=None):
-        import xxsubtype as spam
-        return spam.spamlist(l)
-    # This is an ugly hack:
-    copy._deepcopy_dispatch[spam.spamlist] = spamlist
-
-    testbinop(spamlist([1]), spamlist([2]), spamlist([1,2]), "a+b", "__add__")
-    testbinop(spamlist([1,2,3]), 2, 1, "b in a", "__contains__")
-    testbinop(spamlist([1,2,3]), 4, 0, "b in a", "__contains__")
-    testbinop(spamlist([1,2,3]), 1, 2, "a[b]", "__getitem__")
-    testternop(spamlist([1,2,3]), 0, 2, spamlist([1,2]),
-               "a[b:c]", "__getslice__")
-    testsetop(spamlist([1]), spamlist([2]), spamlist([1,2]),
-              "a+=b", "__iadd__")
-    testsetop(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "a*=b", "__imul__")
-    testunop(spamlist([1,2,3]), 3, "len(a)", "__len__")
-    testbinop(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "a*b", "__mul__")
-    testbinop(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "b*a", "__rmul__")
-    testset2op(spamlist([1,2]), 1, 3, spamlist([1,3]), "a[b]=c", "__setitem__")
-    testset3op(spamlist([1,2,3,4]), 1, 3, spamlist([5,6]),
-               spamlist([1,5,6,4]), "a[b:c]=d", "__setslice__")
-    # Test subclassing
-    class C(spam.spamlist):
-        def foo(self): return 1
-    a = C()
-    vereq(a, [])
-    vereq(a.foo(), 1)
-    a.append(100)
-    vereq(a, [100])
-    vereq(a.getstate(), 0)
-    a.setstate(42)
-    vereq(a.getstate(), 42)
-
-def spamdicts():
-    if verbose: print "Testing spamdict operations..."
-    import copy, xxsubtype as spam
-    def spamdict(d, memo=None):
-        import xxsubtype as spam
-        sd = spam.spamdict()
-        for k, v in d.items(): sd[k] = v
-        return sd
-    # This is an ugly hack:
-    copy._deepcopy_dispatch[spam.spamdict] = spamdict
-
-    testbinop(spamdict({1:2}), spamdict({2:1}), -1, "cmp(a,b)", "__cmp__")
-    testbinop(spamdict({1:2,3:4}), 1, 1, "b in a", "__contains__")
-    testbinop(spamdict({1:2,3:4}), 2, 0, "b in a", "__contains__")
-    testbinop(spamdict({1:2,3:4}), 1, 2, "a[b]", "__getitem__")
-    d = spamdict({1:2,3:4})
-    l1 = []
-    for i in d.keys(): l1.append(i)
-    l = []
-    for i in iter(d): l.append(i)
-    vereq(l, l1)
-    l = []
-    for i in d.__iter__(): l.append(i)
-    vereq(l, l1)
-    l = []
-    for i in type(spamdict({})).__iter__(d): l.append(i)
-    vereq(l, l1)
-    straightd = {1:2, 3:4}
-    spamd = spamdict(straightd)
-    testunop(spamd, 2, "len(a)", "__len__")
-    testunop(spamd, repr(straightd), "repr(a)", "__repr__")
-    testset2op(spamdict({1:2,3:4}), 2, 3, spamdict({1:2,2:3,3:4}),
-               "a[b]=c", "__setitem__")
-    # Test subclassing
-    class C(spam.spamdict):
-        def foo(self): return 1
-    a = C()
-    vereq(a.items(), [])
-    vereq(a.foo(), 1)
-    a['foo'] = 'bar'
-    vereq(a.items(), [('foo', 'bar')])
-    vereq(a.getstate(), 0)
-    a.setstate(100)
-    vereq(a.getstate(), 100)
-
-def pydicts():
-    if verbose: print "Testing Python subclass of dict..."
-    verify(issubclass(dict, dict))
-    verify(isinstance({}, dict))
-    d = dict()
-    vereq(d, {})
-    verify(d.__class__ is dict)
-    verify(isinstance(d, dict))
-    class C(dict):
-        state = -1
-        def __init__(self, *a, **kw):
-            if a:
-                vereq(len(a), 1)
-                self.state = a[0]
-            if kw:
-                for k, v in kw.items(): self[v] = k
-        def __getitem__(self, key):
-            return self.get(key, 0)
-        def __setitem__(self, key, value):
-            verify(isinstance(key, type(0)))
-            dict.__setitem__(self, key, value)
-        def setstate(self, state):
-            self.state = state
-        def getstate(self):
-            return self.state
-    verify(issubclass(C, dict))
-    a1 = C(12)
-    vereq(a1.state, 12)
-    a2 = C(foo=1, bar=2)
-    vereq(a2[1] == 'foo' and a2[2], 'bar')
-    a = C()
-    vereq(a.state, -1)
-    vereq(a.getstate(), -1)
-    a.setstate(0)
-    vereq(a.state, 0)
-    vereq(a.getstate(), 0)
-    a.setstate(10)
-    vereq(a.state, 10)
-    vereq(a.getstate(), 10)
-    vereq(a[42], 0)
-    a[42] = 24
-    vereq(a[42], 24)
-    if verbose: print "pydict stress test ..."
-    N = 50
-    for i in range(N):
-        a[i] = C()
-        for j in range(N):
-            a[i][j] = i*j
-    for i in range(N):
-        for j in range(N):
-            vereq(a[i][j], i*j)
-
-def pylists():
-    if verbose: print "Testing Python subclass of list..."
-    class C(list):
-        def __getitem__(self, i):
-            return list.__getitem__(self, i) + 100
-        def __getslice__(self, i, j):
-            return (i, j)
-    a = C()
-    a.extend([0,1,2])
-    vereq(a[0], 100)
-    vereq(a[1], 101)
-    vereq(a[2], 102)
-    vereq(a[100:200], (100,200))
-
-def metaclass():
-    if verbose: print "Testing __metaclass__..."
-    class C:
-        __metaclass__ = type
-        def __init__(self):
-            self.__state = 0
-        def getstate(self):
-            return self.__state
-        def setstate(self, state):
-            self.__state = state
-    a = C()
-    vereq(a.getstate(), 0)
-    a.setstate(10)
-    vereq(a.getstate(), 10)
-    class D:
-        class __metaclass__(type):
-            def myself(cls): return cls
-    vereq(D.myself(), D)
-    d = D()
-    verify(d.__class__ is D)
-    class M1(type):
-        def __new__(cls, name, bases, dict):
-            dict['__spam__'] = 1
-            return type.__new__(cls, name, bases, dict)
-    class C:
-        __metaclass__ = M1
-    vereq(C.__spam__, 1)
-    c = C()
-    vereq(c.__spam__, 1)
-
-    class _instance(object):
-        pass
-    class M2(object):
-        @staticmethod
-        def __new__(cls, name, bases, dict):
-            self = object.__new__(cls)
-            self.name = name
-            self.bases = bases
-            self.dict = dict
-            return self
-        def __call__(self):
-            it = _instance()
-            # Early binding of methods
-            for key in self.dict:
-                if key.startswith("__"):
-                    continue
-                setattr(it, key, self.dict[key].__get__(it, self))
-            return it
-    class C:
-        __metaclass__ = M2
-        def spam(self):
-            return 42
-    vereq(C.name, 'C')
-    vereq(C.bases, ())
-    verify('spam' in C.dict)
-    c = C()
-    vereq(c.spam(), 42)
-
-    # More metaclass examples
-
-    class autosuper(type):
-        # Automatically add __super to the class
-        # This trick only works for dynamic classes
-        def __new__(metaclass, name, bases, dict):
-            cls = super(autosuper, metaclass).__new__(metaclass,
-                                                      name, bases, dict)
-            # Name mangling for __super removes leading underscores
-            while name[:1] == "_":
-                name = name[1:]
-            if name:
-                name = "_%s__super" % name
-            else:
-                name = "__super"
-            setattr(cls, name, super(cls))
-            return cls
-    class A:
-        __metaclass__ = autosuper
-        def meth(self):
-            return "A"
-    class B(A):
-        def meth(self):
-            return "B" + self.__super.meth()
-    class C(A):
-        def meth(self):
-            return "C" + self.__super.meth()
-    class D(C, B):
-        def meth(self):
-            return "D" + self.__super.meth()
-    vereq(D().meth(), "DCBA")
-    class E(B, C):
-        def meth(self):
-            return "E" + self.__super.meth()
-    vereq(E().meth(), "EBCA")
-
-    class autoproperty(type):
-        # Automatically create property attributes when methods
-        # named _get_x and/or _set_x are found
-        def __new__(metaclass, name, bases, dict):
-            hits = {}
-            for key, val in dict.iteritems():
-                if key.startswith("_get_"):
-                    key = key[5:]
-                    get, set = hits.get(key, (None, None))
-                    get = val
-                    hits[key] = get, set
-                elif key.startswith("_set_"):
-                    key = key[5:]
-                    get, set = hits.get(key, (None, None))
-                    set = val
-                    hits[key] = get, set
-            for key, (get, set) in hits.iteritems():
-                dict[key] = property(get, set)
-            return super(autoproperty, metaclass).__new__(metaclass,
-                                                        name, bases, dict)
-    class A:
-        __metaclass__ = autoproperty
-        def _get_x(self):
-            return -self.__x
-        def _set_x(self, x):
-            self.__x = -x
-    a = A()
-    verify(not hasattr(a, "x"))
-    a.x = 12
-    vereq(a.x, 12)
-    vereq(a._A__x, -12)
-
-    class multimetaclass(autoproperty, autosuper):
-        # Merge of multiple cooperating metaclasses
-        pass
-    class A:
-        __metaclass__ = multimetaclass
-        def _get_x(self):
-            return "A"
-    class B(A):
-        def _get_x(self):
-            return "B" + self.__super._get_x()
-    class C(A):
-        def _get_x(self):
-            return "C" + self.__super._get_x()
-    class D(C, B):
-        def _get_x(self):
-            return "D" + self.__super._get_x()
-    vereq(D().x, "DCBA")
-
-    # Make sure type(x) doesn't call x.__class__.__init__
-    class T(type):
-        counter = 0
-        def __init__(self, *args):
-            T.counter += 1
-    class C:
-        __metaclass__ = T
-    vereq(T.counter, 1)
-    a = C()
-    vereq(type(a), C)
-    vereq(T.counter, 1)
-
-    class C(object): pass
-    c = C()
-    try: c()
-    except TypeError: pass
-    else: raise TestFailed, "calling object w/o call method should raise TypeError"
-
-    # Testing code to find most derived baseclass
-    class A(type):
-        def __new__(*args, **kwargs):
-            return type.__new__(*args, **kwargs)
-
-    class B(object):
-        pass
-
-    class C(object):
-        __metaclass__ = A
-
-    # The most derived metaclass of D is A rather than type.
-    class D(B, C):
-        pass
-
-
-def pymods():
-    if verbose: print "Testing Python subclass of module..."
-    log = []
-    import sys
-    MT = type(sys)
-    class MM(MT):
-        def __init__(self, name):
-            MT.__init__(self, name)
-        def __getattribute__(self, name):
-            log.append(("getattr", name))
-            return MT.__getattribute__(self, name)
-        def __setattr__(self, name, value):
-            log.append(("setattr", name, value))
-            MT.__setattr__(self, name, value)
-        def __delattr__(self, name):
-            log.append(("delattr", name))
-            MT.__delattr__(self, name)
-    a = MM("a")
-    a.foo = 12
-    x = a.foo
-    del a.foo
-    vereq(log, [("setattr", "foo", 12),
-                ("getattr", "foo"),
-                ("delattr", "foo")])
-
-    # http://python.org/sf/1174712
-    try:
-        class Module(types.ModuleType, str):
-            pass
-    except TypeError:
-        pass
-    else:
-        raise TestFailed("inheriting from ModuleType and str at the "
-                          "same time should fail")
-
-def multi():
-    if verbose: print "Testing multiple inheritance..."
-    class C(object):
-        def __init__(self):
-            self.__state = 0
-        def getstate(self):
-            return self.__state
-        def setstate(self, state):
-            self.__state = state
-    a = C()
-    vereq(a.getstate(), 0)
-    a.setstate(10)
-    vereq(a.getstate(), 10)
-    class D(dict, C):
-        def __init__(self):
-            type({}).__init__(self)
-            C.__init__(self)
-    d = D()
-    vereq(d.keys(), [])
-    d["hello"] = "world"
-    vereq(d.items(), [("hello", "world")])
-    vereq(d["hello"], "world")
-    vereq(d.getstate(), 0)
-    d.setstate(10)
-    vereq(d.getstate(), 10)
-    vereq(D.__mro__, (D, dict, C, object))
-
-    # SF bug #442833
-    class Node(object):
-        def __int__(self):
-            return int(self.foo())
-        def foo(self):
-            return "23"
-    class Frag(Node, list):
-        def foo(self):
-            return "42"
-    vereq(Node().__int__(), 23)
-    vereq(int(Node()), 23)
-    vereq(Frag().__int__(), 42)
-    vereq(int(Frag()), 42)
-
-    # MI mixing classic and new-style classes.
-
-    class A:
-        x = 1
-
-    class B(A):
-        pass
-
-    class C(A):
-        x = 2
-
-    class D(B, C):
-        pass
-    vereq(D.x, 1)
-
-    # Classic MRO is preserved for a classic base class.
-    class E(D, object):
-        pass
-    vereq(E.__mro__, (E, D, B, A, C, object))
-    vereq(E.x, 1)
-
-    # But with a mix of classic bases, their MROs are combined using
-    # new-style MRO.
-    class F(B, C, object):
-        pass
-    vereq(F.__mro__, (F, B, C, A, object))
-    vereq(F.x, 2)
-
-    # Try something else.
-    class C:
-        def cmethod(self):
-            return "C a"
-        def all_method(self):
-            return "C b"
-
-    class M1(C, object):
-        def m1method(self):
-            return "M1 a"
-        def all_method(self):
-            return "M1 b"
-
-    vereq(M1.__mro__, (M1, C, object))
-    m = M1()
-    vereq(m.cmethod(), "C a")
-    vereq(m.m1method(), "M1 a")
-    vereq(m.all_method(), "M1 b")
-
-    class D(C):
-        def dmethod(self):
-            return "D a"
-        def all_method(self):
-            return "D b"
-
-    class M2(D, object):
-        def m2method(self):
-            return "M2 a"
-        def all_method(self):
-            return "M2 b"
-
-    vereq(M2.__mro__, (M2, D, C, object))
-    m = M2()
-    vereq(m.cmethod(), "C a")
-    vereq(m.dmethod(), "D a")
-    vereq(m.m2method(), "M2 a")
-    vereq(m.all_method(), "M2 b")
-
-    class M3(M1, M2, object):
-        def m3method(self):
-            return "M3 a"
-        def all_method(self):
-            return "M3 b"
-    vereq(M3.__mro__, (M3, M1, M2, D, C, object))
-    m = M3()
-    vereq(m.cmethod(), "C a")
-    vereq(m.dmethod(), "D a")
-    vereq(m.m1method(), "M1 a")
-    vereq(m.m2method(), "M2 a")
-    vereq(m.m3method(), "M3 a")
-    vereq(m.all_method(), "M3 b")
-
-    class Classic:
-        pass
-    try:
-        class New(Classic):
+    def test_metaclass(self):
+        # Testing __metaclass__...
+        class C:
             __metaclass__ = type
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "new class with only classic bases - shouldn't be"
+            def __init__(self):
+                self.__state = 0
+            def getstate(self):
+                return self.__state
+            def setstate(self, state):
+                self.__state = state
+        a = C()
+        self.assertEqual(a.getstate(), 0)
+        a.setstate(10)
+        self.assertEqual(a.getstate(), 10)
+        class D:
+            class __metaclass__(type):
+                def myself(cls): return cls
+        self.assertEqual(D.myself(), D)
+        d = D()
+        self.assertEqual(d.__class__, D)
+        class M1(type):
+            def __new__(cls, name, bases, dict):
+                dict['__spam__'] = 1
+                return type.__new__(cls, name, bases, dict)
+        class C:
+            __metaclass__ = M1
+        self.assertEqual(C.__spam__, 1)
+        c = C()
+        self.assertEqual(c.__spam__, 1)
 
-def diamond():
-    if verbose: print "Testing multiple inheritance special cases..."
-    class A(object):
-        def spam(self): return "A"
-    vereq(A().spam(), "A")
-    class B(A):
-        def boo(self): return "B"
-        def spam(self): return "B"
-    vereq(B().spam(), "B")
-    vereq(B().boo(), "B")
-    class C(A):
-        def boo(self): return "C"
-    vereq(C().spam(), "A")
-    vereq(C().boo(), "C")
-    class D(B, C): pass
-    vereq(D().spam(), "B")
-    vereq(D().boo(), "B")
-    vereq(D.__mro__, (D, B, C, A, object))
-    class E(C, B): pass
-    vereq(E().spam(), "B")
-    vereq(E().boo(), "C")
-    vereq(E.__mro__, (E, C, B, A, object))
-    # MRO order disagreement
-    try:
-        class F(D, E): pass
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "expected MRO order disagreement (F)"
-    try:
-        class G(E, D): pass
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "expected MRO order disagreement (G)"
+        class _instance(object):
+            pass
+        class M2(object):
+            @staticmethod
+            def __new__(cls, name, bases, dict):
+                self = object.__new__(cls)
+                self.name = name
+                self.bases = bases
+                self.dict = dict
+                return self
+            def __call__(self):
+                it = _instance()
+                # Early binding of methods
+                for key in self.dict:
+                    if key.startswith("__"):
+                        continue
+                    setattr(it, key, self.dict[key].__get__(it, self))
+                return it
+        class C:
+            __metaclass__ = M2
+            def spam(self):
+                return 42
+        self.assertEqual(C.name, 'C')
+        self.assertEqual(C.bases, ())
+        self.assert_('spam' in C.dict)
+        c = C()
+        self.assertEqual(c.spam(), 42)
 
+        # More metaclass examples
 
-# see thread python-dev/2002-October/029035.html
-def ex5():
-    if verbose: print "Testing ex5 from C3 switch discussion..."
-    class A(object): pass
-    class B(object): pass
-    class C(object): pass
-    class X(A): pass
-    class Y(A): pass
-    class Z(X,B,Y,C): pass
-    vereq(Z.__mro__, (Z, X, B, Y, A, C, object))
+        class autosuper(type):
+            # Automatically add __super to the class
+            # This trick only works for dynamic classes
+            def __new__(metaclass, name, bases, dict):
+                cls = super(autosuper, metaclass).__new__(metaclass,
+                                                          name, bases, dict)
+                # Name mangling for __super removes leading underscores
+                while name[:1] == "_":
+                    name = name[1:]
+                if name:
+                    name = "_%s__super" % name
+                else:
+                    name = "__super"
+                setattr(cls, name, super(cls))
+                return cls
+        class A:
+            __metaclass__ = autosuper
+            def meth(self):
+                return "A"
+        class B(A):
+            def meth(self):
+                return "B" + self.__super.meth()
+        class C(A):
+            def meth(self):
+                return "C" + self.__super.meth()
+        class D(C, B):
+            def meth(self):
+                return "D" + self.__super.meth()
+        self.assertEqual(D().meth(), "DCBA")
+        class E(B, C):
+            def meth(self):
+                return "E" + self.__super.meth()
+        self.assertEqual(E().meth(), "EBCA")
 
-# see "A Monotonic Superclass Linearization for Dylan",
-# by Kim Barrett et al. (OOPSLA 1996)
-def monotonicity():
-    if verbose: print "Testing MRO monotonicity..."
-    class Boat(object): pass
-    class DayBoat(Boat): pass
-    class WheelBoat(Boat): pass
-    class EngineLess(DayBoat): pass
-    class SmallMultihull(DayBoat): pass
-    class PedalWheelBoat(EngineLess,WheelBoat): pass
-    class SmallCatamaran(SmallMultihull): pass
-    class Pedalo(PedalWheelBoat,SmallCatamaran): pass
+        class autoproperty(type):
+            # Automatically create property attributes when methods
+            # named _get_x and/or _set_x are found
+            def __new__(metaclass, name, bases, dict):
+                hits = {}
+                for key, val in dict.iteritems():
+                    if key.startswith("_get_"):
+                        key = key[5:]
+                        get, set = hits.get(key, (None, None))
+                        get = val
+                        hits[key] = get, set
+                    elif key.startswith("_set_"):
+                        key = key[5:]
+                        get, set = hits.get(key, (None, None))
+                        set = val
+                        hits[key] = get, set
+                for key, (get, set) in hits.iteritems():
+                    dict[key] = property(get, set)
+                return super(autoproperty, metaclass).__new__(metaclass,
+                                                            name, bases, dict)
+        class A:
+            __metaclass__ = autoproperty
+            def _get_x(self):
+                return -self.__x
+            def _set_x(self, x):
+                self.__x = -x
+        a = A()
+        self.assert_(not hasattr(a, "x"))
+        a.x = 12
+        self.assertEqual(a.x, 12)
+        self.assertEqual(a._A__x, -12)
 
-    vereq(PedalWheelBoat.__mro__,
-          (PedalWheelBoat, EngineLess, DayBoat, WheelBoat, Boat,
-           object))
-    vereq(SmallCatamaran.__mro__,
-          (SmallCatamaran, SmallMultihull, DayBoat, Boat, object))
+        class multimetaclass(autoproperty, autosuper):
+            # Merge of multiple cooperating metaclasses
+            pass
+        class A:
+            __metaclass__ = multimetaclass
+            def _get_x(self):
+                return "A"
+        class B(A):
+            def _get_x(self):
+                return "B" + self.__super._get_x()
+        class C(A):
+            def _get_x(self):
+                return "C" + self.__super._get_x()
+        class D(C, B):
+            def _get_x(self):
+                return "D" + self.__super._get_x()
+        self.assertEqual(D().x, "DCBA")
 
-    vereq(Pedalo.__mro__,
-          (Pedalo, PedalWheelBoat, EngineLess, SmallCatamaran,
-           SmallMultihull, DayBoat, WheelBoat, Boat, object))
+        # Make sure type(x) doesn't call x.__class__.__init__
+        class T(type):
+            counter = 0
+            def __init__(self, *args):
+                T.counter += 1
+        class C:
+            __metaclass__ = T
+        self.assertEqual(T.counter, 1)
+        a = C()
+        self.assertEqual(type(a), C)
+        self.assertEqual(T.counter, 1)
 
-# see "A Monotonic Superclass Linearization for Dylan",
-# by Kim Barrett et al. (OOPSLA 1996)
-def consistency_with_epg():
-    if verbose: print "Testing consistentcy with EPG..."
-    class Pane(object): pass
-    class ScrollingMixin(object): pass
-    class EditingMixin(object): pass
-    class ScrollablePane(Pane,ScrollingMixin): pass
-    class EditablePane(Pane,EditingMixin): pass
-    class EditableScrollablePane(ScrollablePane,EditablePane): pass
+        class C(object): pass
+        c = C()
+        try: c()
+        except TypeError: pass
+        else: self.fail("calling object w/o call method should raise "
+                        "TypeError")
 
-    vereq(EditableScrollablePane.__mro__,
-          (EditableScrollablePane, ScrollablePane, EditablePane,
-           Pane, ScrollingMixin, EditingMixin, object))
+        # Testing code to find most derived baseclass
+        class A(type):
+            def __new__(*args, **kwargs):
+                return type.__new__(*args, **kwargs)
 
-mro_err_msg = """Cannot create a consistent method resolution
+        class B(object):
+            pass
+
+        class C(object):
+            __metaclass__ = A
+
+        # The most derived metaclass of D is A rather than type.
+        class D(B, C):
+            pass
+
+    def test_module_subclasses(self):
+        # Testing Python subclass of module...
+        log = []
+        import types, sys
+        MT = type(sys)
+        class MM(MT):
+            def __init__(self, name):
+                MT.__init__(self, name)
+            def __getattribute__(self, name):
+                log.append(("getattr", name))
+                return MT.__getattribute__(self, name)
+            def __setattr__(self, name, value):
+                log.append(("setattr", name, value))
+                MT.__setattr__(self, name, value)
+            def __delattr__(self, name):
+                log.append(("delattr", name))
+                MT.__delattr__(self, name)
+        a = MM("a")
+        a.foo = 12
+        x = a.foo
+        del a.foo
+        self.assertEqual(log, [("setattr", "foo", 12),
+                               ("getattr", "foo"),
+                               ("delattr", "foo")])
+
+        # http://python.org/sf/1174712
+        try:
+            class Module(types.ModuleType, str):
+                pass
+        except TypeError:
+            pass
+        else:
+            self.fail("inheriting from ModuleType and str at the same time "
+                      "should fail")
+
+    def test_multiple_inheritence(self):
+        # Testing multiple inheritance...
+        class C(object):
+            def __init__(self):
+                self.__state = 0
+            def getstate(self):
+                return self.__state
+            def setstate(self, state):
+                self.__state = state
+        a = C()
+        self.assertEqual(a.getstate(), 0)
+        a.setstate(10)
+        self.assertEqual(a.getstate(), 10)
+        class D(dict, C):
+            def __init__(self):
+                type({}).__init__(self)
+                C.__init__(self)
+        d = D()
+        self.assertEqual(d.keys(), [])
+        d["hello"] = "world"
+        self.assertEqual(d.items(), [("hello", "world")])
+        self.assertEqual(d["hello"], "world")
+        self.assertEqual(d.getstate(), 0)
+        d.setstate(10)
+        self.assertEqual(d.getstate(), 10)
+        self.assertEqual(D.__mro__, (D, dict, C, object))
+
+        # SF bug #442833
+        class Node(object):
+            def __int__(self):
+                return int(self.foo())
+            def foo(self):
+                return "23"
+        class Frag(Node, list):
+            def foo(self):
+                return "42"
+        self.assertEqual(Node().__int__(), 23)
+        self.assertEqual(int(Node()), 23)
+        self.assertEqual(Frag().__int__(), 42)
+        self.assertEqual(int(Frag()), 42)
+
+        # MI mixing classic and new-style classes.
+
+        class A:
+            x = 1
+
+        class B(A):
+            pass
+
+        class C(A):
+            x = 2
+
+        class D(B, C):
+            pass
+        self.assertEqual(D.x, 1)
+
+        # Classic MRO is preserved for a classic base class.
+        class E(D, object):
+            pass
+        self.assertEqual(E.__mro__, (E, D, B, A, C, object))
+        self.assertEqual(E.x, 1)
+
+        # But with a mix of classic bases, their MROs are combined using
+        # new-style MRO.
+        class F(B, C, object):
+            pass
+        self.assertEqual(F.__mro__, (F, B, C, A, object))
+        self.assertEqual(F.x, 2)
+
+        # Try something else.
+        class C:
+            def cmethod(self):
+                return "C a"
+            def all_method(self):
+                return "C b"
+
+        class M1(C, object):
+            def m1method(self):
+                return "M1 a"
+            def all_method(self):
+                return "M1 b"
+
+        self.assertEqual(M1.__mro__, (M1, C, object))
+        m = M1()
+        self.assertEqual(m.cmethod(), "C a")
+        self.assertEqual(m.m1method(), "M1 a")
+        self.assertEqual(m.all_method(), "M1 b")
+
+        class D(C):
+            def dmethod(self):
+                return "D a"
+            def all_method(self):
+                return "D b"
+
+        class M2(D, object):
+            def m2method(self):
+                return "M2 a"
+            def all_method(self):
+                return "M2 b"
+
+        self.assertEqual(M2.__mro__, (M2, D, C, object))
+        m = M2()
+        self.assertEqual(m.cmethod(), "C a")
+        self.assertEqual(m.dmethod(), "D a")
+        self.assertEqual(m.m2method(), "M2 a")
+        self.assertEqual(m.all_method(), "M2 b")
+
+        class M3(M1, M2, object):
+            def m3method(self):
+                return "M3 a"
+            def all_method(self):
+                return "M3 b"
+        self.assertEqual(M3.__mro__, (M3, M1, M2, D, C, object))
+        m = M3()
+        self.assertEqual(m.cmethod(), "C a")
+        self.assertEqual(m.dmethod(), "D a")
+        self.assertEqual(m.m1method(), "M1 a")
+        self.assertEqual(m.m2method(), "M2 a")
+        self.assertEqual(m.m3method(), "M3 a")
+        self.assertEqual(m.all_method(), "M3 b")
+
+        class Classic:
+            pass
+        try:
+            class New(Classic):
+                __metaclass__ = type
+        except TypeError:
+            pass
+        else:
+            self.fail("new class with only classic bases - shouldn't be")
+
+    def test_diamond_inheritence(self):
+        # Testing multiple inheritance special cases...
+        class A(object):
+            def spam(self): return "A"
+        self.assertEqual(A().spam(), "A")
+        class B(A):
+            def boo(self): return "B"
+            def spam(self): return "B"
+        self.assertEqual(B().spam(), "B")
+        self.assertEqual(B().boo(), "B")
+        class C(A):
+            def boo(self): return "C"
+        self.assertEqual(C().spam(), "A")
+        self.assertEqual(C().boo(), "C")
+        class D(B, C): pass
+        self.assertEqual(D().spam(), "B")
+        self.assertEqual(D().boo(), "B")
+        self.assertEqual(D.__mro__, (D, B, C, A, object))
+        class E(C, B): pass
+        self.assertEqual(E().spam(), "B")
+        self.assertEqual(E().boo(), "C")
+        self.assertEqual(E.__mro__, (E, C, B, A, object))
+        # MRO order disagreement
+        try:
+            class F(D, E): pass
+        except TypeError:
+            pass
+        else:
+            self.fail("expected MRO order disagreement (F)")
+        try:
+            class G(E, D): pass
+        except TypeError:
+            pass
+        else:
+            self.fail("expected MRO order disagreement (G)")
+
+    # see thread python-dev/2002-October/029035.html
+    def test_ex5_from_c3_switch(self):
+        # Testing ex5 from C3 switch discussion...
+        class A(object): pass
+        class B(object): pass
+        class C(object): pass
+        class X(A): pass
+        class Y(A): pass
+        class Z(X,B,Y,C): pass
+        self.assertEqual(Z.__mro__, (Z, X, B, Y, A, C, object))
+
+    # see "A Monotonic Superclass Linearization for Dylan",
+    # by Kim Barrett et al. (OOPSLA 1996)
+    def test_monotonicity(self):
+        # Testing MRO monotonicity...
+        class Boat(object): pass
+        class DayBoat(Boat): pass
+        class WheelBoat(Boat): pass
+        class EngineLess(DayBoat): pass
+        class SmallMultihull(DayBoat): pass
+        class PedalWheelBoat(EngineLess,WheelBoat): pass
+        class SmallCatamaran(SmallMultihull): pass
+        class Pedalo(PedalWheelBoat,SmallCatamaran): pass
+
+        self.assertEqual(PedalWheelBoat.__mro__,
+              (PedalWheelBoat, EngineLess, DayBoat, WheelBoat, Boat, object))
+        self.assertEqual(SmallCatamaran.__mro__,
+              (SmallCatamaran, SmallMultihull, DayBoat, Boat, object))
+        self.assertEqual(Pedalo.__mro__,
+              (Pedalo, PedalWheelBoat, EngineLess, SmallCatamaran,
+               SmallMultihull, DayBoat, WheelBoat, Boat, object))
+
+    # see "A Monotonic Superclass Linearization for Dylan",
+    # by Kim Barrett et al. (OOPSLA 1996)
+    def test_consistency_with_epg(self):
+        # Testing consistentcy with EPG...
+        class Pane(object): pass
+        class ScrollingMixin(object): pass
+        class EditingMixin(object): pass
+        class ScrollablePane(Pane,ScrollingMixin): pass
+        class EditablePane(Pane,EditingMixin): pass
+        class EditableScrollablePane(ScrollablePane,EditablePane): pass
+
+        self.assertEqual(EditableScrollablePane.__mro__,
+              (EditableScrollablePane, ScrollablePane, EditablePane, Pane,
+                ScrollingMixin, EditingMixin, object))
+
+    def test_mro_disagreement(self):
+        # Testing error messages for MRO disagreement...
+        mro_err_msg = """Cannot create a consistent method resolution
 order (MRO) for bases """
 
-def mro_disagreement():
-    if verbose: print "Testing error messages for MRO disagreement..."
-    def raises(exc, expected, callable, *args):
+        def raises(exc, expected, callable, *args):
+            try:
+                callable(*args)
+            except exc, msg:
+                if not str(msg).startswith(expected):
+                    self.fail("Message %r, expected %r" % (str(msg), expected))
+            else:
+                self.fail("Expected %s" % exc)
+
+        class A(object): pass
+        class B(A): pass
+        class C(object): pass
+
+        # Test some very simple errors
+        raises(TypeError, "duplicate base class A",
+               type, "X", (A, A), {})
+        raises(TypeError, mro_err_msg,
+               type, "X", (A, B), {})
+        raises(TypeError, mro_err_msg,
+               type, "X", (A, C, B), {})
+        # Test a slightly more complex error
+        class GridLayout(object): pass
+        class HorizontalGrid(GridLayout): pass
+        class VerticalGrid(GridLayout): pass
+        class HVGrid(HorizontalGrid, VerticalGrid): pass
+        class VHGrid(VerticalGrid, HorizontalGrid): pass
+        raises(TypeError, mro_err_msg,
+               type, "ConfusedGrid", (HVGrid, VHGrid), {})
+
+    def test_object_class(self):
+        # Testing object class...
+        a = object()
+        self.assertEqual(a.__class__, object)
+        self.assertEqual(type(a), object)
+        b = object()
+        self.assertNotEqual(a, b)
+        self.assertFalse(hasattr(a, "foo"))
         try:
-            callable(*args)
-        except exc, msg:
-            if not str(msg).startswith(expected):
-                raise TestFailed, "Message %r, expected %r" % (str(msg),
-                                                               expected)
+            a.foo = 12
+        except (AttributeError, TypeError):
+            pass
         else:
-            raise TestFailed, "Expected %s" % exc
-    class A(object): pass
-    class B(A): pass
-    class C(object): pass
-    # Test some very simple errors
-    raises(TypeError, "duplicate base class A",
-           type, "X", (A, A), {})
-    raises(TypeError, mro_err_msg,
-           type, "X", (A, B), {})
-    raises(TypeError, mro_err_msg,
-           type, "X", (A, C, B), {})
-    # Test a slightly more complex error
-    class GridLayout(object): pass
-    class HorizontalGrid(GridLayout): pass
-    class VerticalGrid(GridLayout): pass
-    class HVGrid(HorizontalGrid, VerticalGrid): pass
-    class VHGrid(VerticalGrid, HorizontalGrid): pass
-    raises(TypeError, mro_err_msg,
-           type, "ConfusedGrid", (HVGrid, VHGrid), {})
+            self.fail("object() should not allow setting a foo attribute")
+        self.assertFalse(hasattr(object(), "__dict__"))
 
-def objects():
-    if verbose: print "Testing object class..."
-    a = object()
-    vereq(a.__class__, object)
-    vereq(type(a), object)
-    b = object()
-    verify(a is not b)
-    verify(not hasattr(a, "foo"))
-    try:
-        a.foo = 12
-    except (AttributeError, TypeError):
-        pass
-    else:
-        verify(0, "object() should not allow setting a foo attribute")
-    verify(not hasattr(object(), "__dict__"))
+        class Cdict(object):
+            pass
+        x = Cdict()
+        self.assertEqual(x.__dict__, {})
+        x.foo = 1
+        self.assertEqual(x.foo, 1)
+        self.assertEqual(x.__dict__, {'foo': 1})
 
-    class Cdict(object):
-        pass
-    x = Cdict()
-    vereq(x.__dict__, {})
-    x.foo = 1
-    vereq(x.foo, 1)
-    vereq(x.__dict__, {'foo': 1})
+    def test_slots(self):
+        # Testing __slots__...
+        class C0(object):
+            __slots__ = []
+        x = C0()
+        self.assertFalse(hasattr(x, "__dict__"))
+        self.assertFalse(hasattr(x, "foo"))
 
-def slots():
-    if verbose: print "Testing __slots__..."
-    class C0(object):
-        __slots__ = []
-    x = C0()
-    verify(not hasattr(x, "__dict__"))
-    verify(not hasattr(x, "foo"))
+        class C1(object):
+            __slots__ = ['a']
+        x = C1()
+        self.assertFalse(hasattr(x, "__dict__"))
+        self.assertFalse(hasattr(x, "a"))
+        x.a = 1
+        self.assertEqual(x.a, 1)
+        x.a = None
+        self.assertEqual(x.a, None)
+        del x.a
+        self.assertFalse(hasattr(x, "a"))
 
-    class C1(object):
-        __slots__ = ['a']
-    x = C1()
-    verify(not hasattr(x, "__dict__"))
-    verify(not hasattr(x, "a"))
-    x.a = 1
-    vereq(x.a, 1)
-    x.a = None
-    veris(x.a, None)
-    del x.a
-    verify(not hasattr(x, "a"))
+        class C3(object):
+            __slots__ = ['a', 'b', 'c']
+        x = C3()
+        self.assertFalse(hasattr(x, "__dict__"))
+        self.assertFalse(hasattr(x, 'a'))
+        self.assertFalse(hasattr(x, 'b'))
+        self.assertFalse(hasattr(x, 'c'))
+        x.a = 1
+        x.b = 2
+        x.c = 3
+        self.assertEqual(x.a, 1)
+        self.assertEqual(x.b, 2)
+        self.assertEqual(x.c, 3)
 
-    class C3(object):
-        __slots__ = ['a', 'b', 'c']
-    x = C3()
-    verify(not hasattr(x, "__dict__"))
-    verify(not hasattr(x, 'a'))
-    verify(not hasattr(x, 'b'))
-    verify(not hasattr(x, 'c'))
-    x.a = 1
-    x.b = 2
-    x.c = 3
-    vereq(x.a, 1)
-    vereq(x.b, 2)
-    vereq(x.c, 3)
+        class C4(object):
+            """Validate name mangling"""
+            __slots__ = ['__a']
+            def __init__(self, value):
+                self.__a = value
+            def get(self):
+                return self.__a
+        x = C4(5)
+        self.assertFalse(hasattr(x, '__dict__'))
+        self.assertFalse(hasattr(x, '__a'))
+        self.assertEqual(x.get(), 5)
+        try:
+            x.__a = 6
+        except AttributeError:
+            pass
+        else:
+            self.fail("Double underscored names not mangled")
 
-    class C4(object):
-        """Validate name mangling"""
-        __slots__ = ['__a']
-        def __init__(self, value):
-            self.__a = value
-        def get(self):
-            return self.__a
-    x = C4(5)
-    verify(not hasattr(x, '__dict__'))
-    verify(not hasattr(x, '__a'))
-    vereq(x.get(), 5)
-    try:
-        x.__a = 6
-    except AttributeError:
-        pass
-    else:
-        raise TestFailed, "Double underscored names not mangled"
-
-    # Make sure slot names are proper identifiers
-    try:
-        class C(object):
-            __slots__ = [None]
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "[None] slots not caught"
-    try:
-        class C(object):
-            __slots__ = ["foo bar"]
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "['foo bar'] slots not caught"
-    try:
-        class C(object):
-            __slots__ = ["foo\0bar"]
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "['foo\\0bar'] slots not caught"
-    try:
-        class C(object):
-            __slots__ = ["1"]
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "['1'] slots not caught"
-    try:
-        class C(object):
-            __slots__ = [""]
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "[''] slots not caught"
-    class C(object):
-        __slots__ = ["a", "a_b", "_a", "A0123456789Z"]
-    # XXX(nnorwitz): was there supposed to be something tested
-    # from the class above?
-
-    # Test a single string is not expanded as a sequence.
-    class C(object):
-        __slots__ = "abc"
-    c = C()
-    c.abc = 5
-    vereq(c.abc, 5)
-
-    # Test unicode slot names
-    try:
-        unicode
-    except NameError:
-        pass
-    else:
-        # Test a single unicode string is not expanded as a sequence.
-        class C(object):
-            __slots__ = unicode("abc")
-        c = C()
-        c.abc = 5
-        vereq(c.abc, 5)
-
-        # _unicode_to_string used to modify slots in certain circumstances
-        slots = (unicode("foo"), unicode("bar"))
-        class C(object):
-            __slots__ = slots
-        x = C()
-        x.foo = 5
-        vereq(x.foo, 5)
-        veris(type(slots[0]), unicode)
-        # this used to leak references
+        # Make sure slot names are proper identifiers
         try:
             class C(object):
-                __slots__ = [unichr(128)]
-        except (TypeError, UnicodeEncodeError):
-            pass
-        else:
-            raise TestFailed, "[unichr(128)] slots not caught"
-
-    # Test leaks
-    class Counted(object):
-        counter = 0    # counts the number of instances alive
-        def __init__(self):
-            Counted.counter += 1
-        def __del__(self):
-            Counted.counter -= 1
-    class C(object):
-        __slots__ = ['a', 'b', 'c']
-    x = C()
-    x.a = Counted()
-    x.b = Counted()
-    x.c = Counted()
-    vereq(Counted.counter, 3)
-    del x
-    vereq(Counted.counter, 0)
-    class D(C):
-        pass
-    x = D()
-    x.a = Counted()
-    x.z = Counted()
-    vereq(Counted.counter, 2)
-    del x
-    vereq(Counted.counter, 0)
-    class E(D):
-        __slots__ = ['e']
-    x = E()
-    x.a = Counted()
-    x.z = Counted()
-    x.e = Counted()
-    vereq(Counted.counter, 3)
-    del x
-    vereq(Counted.counter, 0)
-
-    # Test cyclical leaks [SF bug 519621]
-    class F(object):
-        __slots__ = ['a', 'b']
-    log = []
-    s = F()
-    s.a = [Counted(), s]
-    vereq(Counted.counter, 1)
-    s = None
-    import gc
-    gc.collect()
-    vereq(Counted.counter, 0)
-
-    # Test lookup leaks [SF bug 572567]
-    import sys,gc
-    class G(object):
-        def __cmp__(self, other):
-            return 0
-    g = G()
-    orig_objects = len(gc.get_objects())
-    for i in xrange(10):
-        g==g
-    new_objects = len(gc.get_objects())
-    vereq(orig_objects, new_objects)
-    class H(object):
-        __slots__ = ['a', 'b']
-        def __init__(self):
-            self.a = 1
-            self.b = 2
-        def __del__(self):
-            assert self.a == 1
-            assert self.b == 2
-
-    save_stderr = sys.stderr
-    sys.stderr = sys.stdout
-    h = H()
-    try:
-        del h
-    finally:
-        sys.stderr = save_stderr
-
-def slotspecials():
-    if verbose: print "Testing __dict__ and __weakref__ in __slots__..."
-
-    class D(object):
-        __slots__ = ["__dict__"]
-    a = D()
-    verify(hasattr(a, "__dict__"))
-    verify(not hasattr(a, "__weakref__"))
-    a.foo = 42
-    vereq(a.__dict__, {"foo": 42})
-
-    class W(object):
-        __slots__ = ["__weakref__"]
-    a = W()
-    verify(hasattr(a, "__weakref__"))
-    verify(not hasattr(a, "__dict__"))
-    try:
-        a.foo = 42
-    except AttributeError:
-        pass
-    else:
-        raise TestFailed, "shouldn't be allowed to set a.foo"
-
-    class C1(W, D):
-        __slots__ = []
-    a = C1()
-    verify(hasattr(a, "__dict__"))
-    verify(hasattr(a, "__weakref__"))
-    a.foo = 42
-    vereq(a.__dict__, {"foo": 42})
-
-    class C2(D, W):
-        __slots__ = []
-    a = C2()
-    verify(hasattr(a, "__dict__"))
-    verify(hasattr(a, "__weakref__"))
-    a.foo = 42
-    vereq(a.__dict__, {"foo": 42})
-
-# MRO order disagreement
-#
-#    class C3(C1, C2):
-#        __slots__ = []
-#
-#    class C4(C2, C1):
-#        __slots__ = []
-
-def dynamics():
-    if verbose: print "Testing class attribute propagation..."
-    class D(object):
-        pass
-    class E(D):
-        pass
-    class F(D):
-        pass
-    D.foo = 1
-    vereq(D.foo, 1)
-    # Test that dynamic attributes are inherited
-    vereq(E.foo, 1)
-    vereq(F.foo, 1)
-    # Test dynamic instances
-    class C(object):
-        pass
-    a = C()
-    verify(not hasattr(a, "foobar"))
-    C.foobar = 2
-    vereq(a.foobar, 2)
-    C.method = lambda self: 42
-    vereq(a.method(), 42)
-    C.__repr__ = lambda self: "C()"
-    vereq(repr(a), "C()")
-    C.__int__ = lambda self: 100
-    vereq(int(a), 100)
-    vereq(a.foobar, 2)
-    verify(not hasattr(a, "spam"))
-    def mygetattr(self, name):
-        if name == "spam":
-            return "spam"
-        raise AttributeError
-    C.__getattr__ = mygetattr
-    vereq(a.spam, "spam")
-    a.new = 12
-    vereq(a.new, 12)
-    def mysetattr(self, name, value):
-        if name == "spam":
-            raise AttributeError
-        return object.__setattr__(self, name, value)
-    C.__setattr__ = mysetattr
-    try:
-        a.spam = "not spam"
-    except AttributeError:
-        pass
-    else:
-        verify(0, "expected AttributeError")
-    vereq(a.spam, "spam")
-    class D(C):
-        pass
-    d = D()
-    d.foo = 1
-    vereq(d.foo, 1)
-
-    # Test handling of int*seq and seq*int
-    class I(int):
-        pass
-    vereq("a"*I(2), "aa")
-    vereq(I(2)*"a", "aa")
-    vereq(2*I(3), 6)
-    vereq(I(3)*2, 6)
-    vereq(I(3)*I(2), 6)
-
-    # Test handling of long*seq and seq*long
-    class L(long):
-        pass
-    vereq("a"*L(2L), "aa")
-    vereq(L(2L)*"a", "aa")
-    vereq(2*L(3), 6)
-    vereq(L(3)*2, 6)
-    vereq(L(3)*L(2), 6)
-
-    # Test comparison of classes with dynamic metaclasses
-    class dynamicmetaclass(type):
-        pass
-    class someclass:
-        __metaclass__ = dynamicmetaclass
-    verify(someclass != object)
-
-def errors():
-    if verbose: print "Testing errors..."
-
-    try:
-        class C(list, dict):
-            pass
-    except TypeError:
-        pass
-    else:
-        verify(0, "inheritance from both list and dict should be illegal")
-
-    try:
-        class C(object, None):
-            pass
-    except TypeError:
-        pass
-    else:
-        verify(0, "inheritance from non-type should be illegal")
-    class Classic:
-        pass
-
-    try:
-        class C(type(len)):
-            pass
-    except TypeError:
-        pass
-    else:
-        verify(0, "inheritance from CFunction should be illegal")
-
-    try:
-        class C(object):
-            __slots__ = 1
-    except TypeError:
-        pass
-    else:
-        verify(0, "__slots__ = 1 should be illegal")
-
-    try:
-        class C(object):
-            __slots__ = [1]
-    except TypeError:
-        pass
-    else:
-        verify(0, "__slots__ = [1] should be illegal")
-
-    class M1(type):
-        pass
-    class M2(type):
-        pass
-    class A1(object):
-        __metaclass__ = M1
-    class A2(object):
-        __metaclass__ = M2
-    try:
-        class B(A1, A2):
-            pass
-    except TypeError:
-        pass
-    else:
-        verify(0, "finding the most derived metaclass should have failed")
-
-def classmethods():
-    if verbose: print "Testing class methods..."
-    class C(object):
-        def foo(*a): return a
-        goo = classmethod(foo)
-    c = C()
-    vereq(C.goo(1), (C, 1))
-    vereq(c.goo(1), (C, 1))
-    vereq(c.foo(1), (c, 1))
-    class D(C):
-        pass
-    d = D()
-    vereq(D.goo(1), (D, 1))
-    vereq(d.goo(1), (D, 1))
-    vereq(d.foo(1), (d, 1))
-    vereq(D.foo(d, 1), (d, 1))
-    # Test for a specific crash (SF bug 528132)
-    def f(cls, arg): return (cls, arg)
-    ff = classmethod(f)
-    vereq(ff.__get__(0, int)(42), (int, 42))
-    vereq(ff.__get__(0)(42), (int, 42))
-
-    # Test super() with classmethods (SF bug 535444)
-    veris(C.goo.im_self, C)
-    veris(D.goo.im_self, D)
-    veris(super(D,D).goo.im_self, D)
-    veris(super(D,d).goo.im_self, D)
-    vereq(super(D,D).goo(), (D,))
-    vereq(super(D,d).goo(), (D,))
-
-    # Verify that argument is checked for callability (SF bug 753451)
-    try:
-        classmethod(1).__get__(1)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "classmethod should check for callability"
-
-    # Verify that classmethod() doesn't allow keyword args
-    try:
-        classmethod(f, kw=1)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "classmethod shouldn't accept keyword args"
-
-def classmethods_in_c():
-    if verbose: print "Testing C-based class methods..."
-    import xxsubtype as spam
-    a = (1, 2, 3)
-    d = {'abc': 123}
-    x, a1, d1 = spam.spamlist.classmeth(*a, **d)
-    veris(x, spam.spamlist)
-    vereq(a, a1)
-    vereq(d, d1)
-    x, a1, d1 = spam.spamlist().classmeth(*a, **d)
-    veris(x, spam.spamlist)
-    vereq(a, a1)
-    vereq(d, d1)
-
-def staticmethods():
-    if verbose: print "Testing static methods..."
-    class C(object):
-        def foo(*a): return a
-        goo = staticmethod(foo)
-    c = C()
-    vereq(C.goo(1), (1,))
-    vereq(c.goo(1), (1,))
-    vereq(c.foo(1), (c, 1,))
-    class D(C):
-        pass
-    d = D()
-    vereq(D.goo(1), (1,))
-    vereq(d.goo(1), (1,))
-    vereq(d.foo(1), (d, 1))
-    vereq(D.foo(d, 1), (d, 1))
-
-def staticmethods_in_c():
-    if verbose: print "Testing C-based static methods..."
-    import xxsubtype as spam
-    a = (1, 2, 3)
-    d = {"abc": 123}
-    x, a1, d1 = spam.spamlist.staticmeth(*a, **d)
-    veris(x, None)
-    vereq(a, a1)
-    vereq(d, d1)
-    x, a1, d2 = spam.spamlist().staticmeth(*a, **d)
-    veris(x, None)
-    vereq(a, a1)
-    vereq(d, d1)
-
-def classic():
-    if verbose: print "Testing classic classes..."
-    class C:
-        def foo(*a): return a
-        goo = classmethod(foo)
-    c = C()
-    vereq(C.goo(1), (C, 1))
-    vereq(c.goo(1), (C, 1))
-    vereq(c.foo(1), (c, 1))
-    class D(C):
-        pass
-    d = D()
-    vereq(D.goo(1), (D, 1))
-    vereq(d.goo(1), (D, 1))
-    vereq(d.foo(1), (d, 1))
-    vereq(D.foo(d, 1), (d, 1))
-    class E: # *not* subclassing from C
-        foo = C.foo
-    vereq(E().foo, C.foo) # i.e., unbound
-    verify(repr(C.foo.__get__(C())).startswith("<bound method "))
-
-def compattr():
-    if verbose: print "Testing computed attributes..."
-    class C(object):
-        class computed_attribute(object):
-            def __init__(self, get, set=None, delete=None):
-                self.__get = get
-                self.__set = set
-                self.__delete = delete
-            def __get__(self, obj, type=None):
-                return self.__get(obj)
-            def __set__(self, obj, value):
-                return self.__set(obj, value)
-            def __delete__(self, obj):
-                return self.__delete(obj)
-        def __init__(self):
-            self.__x = 0
-        def __get_x(self):
-            x = self.__x
-            self.__x = x+1
-            return x
-        def __set_x(self, x):
-            self.__x = x
-        def __delete_x(self):
-            del self.__x
-        x = computed_attribute(__get_x, __set_x, __delete_x)
-    a = C()
-    vereq(a.x, 0)
-    vereq(a.x, 1)
-    a.x = 10
-    vereq(a.x, 10)
-    vereq(a.x, 11)
-    del a.x
-    vereq(hasattr(a, 'x'), 0)
-
-def newslot():
-    if verbose: print "Testing __new__ slot override..."
-    class C(list):
-        def __new__(cls):
-            self = list.__new__(cls)
-            self.foo = 1
-            return self
-        def __init__(self):
-            self.foo = self.foo + 2
-    a = C()
-    vereq(a.foo, 3)
-    verify(a.__class__ is C)
-    class D(C):
-        pass
-    b = D()
-    vereq(b.foo, 3)
-    verify(b.__class__ is D)
-
-def altmro():
-    if verbose: print "Testing mro() and overriding it..."
-    class A(object):
-        def f(self): return "A"
-    class B(A):
-        pass
-    class C(A):
-        def f(self): return "C"
-    class D(B, C):
-        pass
-    vereq(D.mro(), [D, B, C, A, object])
-    vereq(D.__mro__, (D, B, C, A, object))
-    vereq(D().f(), "C")
-
-    class PerverseMetaType(type):
-        def mro(cls):
-            L = type.mro(cls)
-            L.reverse()
-            return L
-    class X(D,B,C,A):
-        __metaclass__ = PerverseMetaType
-    vereq(X.__mro__, (object, A, C, B, D, X))
-    vereq(X().f(), "A")
-
-    try:
-        class X(object):
-            class __metaclass__(type):
-                def mro(self):
-                    return [self, dict, object]
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "devious mro() return not caught"
-
-    try:
-        class X(object):
-            class __metaclass__(type):
-                def mro(self):
-                    return [1]
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "non-class mro() return not caught"
-
-    try:
-        class X(object):
-            class __metaclass__(type):
-                def mro(self):
-                    return 1
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "non-sequence mro() return not caught"
-
-
-def overloading():
-    if verbose: print "Testing operator overloading..."
-
-    class B(object):
-        "Intermediate class because object doesn't have a __setattr__"
-
-    class C(B):
-
-        def __getattr__(self, name):
-            if name == "foo":
-                return ("getattr", name)
-            else:
-                raise AttributeError
-        def __setattr__(self, name, value):
-            if name == "foo":
-                self.setattr = (name, value)
-            else:
-                return B.__setattr__(self, name, value)
-        def __delattr__(self, name):
-            if name == "foo":
-                self.delattr = name
-            else:
-                return B.__delattr__(self, name)
-
-        def __getitem__(self, key):
-            return ("getitem", key)
-        def __setitem__(self, key, value):
-            self.setitem = (key, value)
-        def __delitem__(self, key):
-            self.delitem = key
-
-        def __getslice__(self, i, j):
-            return ("getslice", i, j)
-        def __setslice__(self, i, j, value):
-            self.setslice = (i, j, value)
-        def __delslice__(self, i, j):
-            self.delslice = (i, j)
-
-    a = C()
-    vereq(a.foo, ("getattr", "foo"))
-    a.foo = 12
-    vereq(a.setattr, ("foo", 12))
-    del a.foo
-    vereq(a.delattr, "foo")
-
-    vereq(a[12], ("getitem", 12))
-    a[12] = 21
-    vereq(a.setitem, (12, 21))
-    del a[12]
-    vereq(a.delitem, 12)
-
-    vereq(a[0:10], ("getslice", 0, 10))
-    a[0:10] = "foo"
-    vereq(a.setslice, (0, 10, "foo"))
-    del a[0:10]
-    vereq(a.delslice, (0, 10))
-
-def methods():
-    if verbose: print "Testing methods..."
-    class C(object):
-        def __init__(self, x):
-            self.x = x
-        def foo(self):
-            return self.x
-    c1 = C(1)
-    vereq(c1.foo(), 1)
-    class D(C):
-        boo = C.foo
-        goo = c1.foo
-    d2 = D(2)
-    vereq(d2.foo(), 2)
-    vereq(d2.boo(), 2)
-    vereq(d2.goo(), 1)
-    class E(object):
-        foo = C.foo
-    vereq(E().foo, C.foo) # i.e., unbound
-    verify(repr(C.foo.__get__(C(1))).startswith("<bound method "))
-
-def specials():
-    # Test operators like __hash__ for which a built-in default exists
-    if verbose: print "Testing special operators..."
-    # Test the default behavior for static classes
-    class C(object):
-        def __getitem__(self, i):
-            if 0 <= i < 10: return i
-            raise IndexError
-    c1 = C()
-    c2 = C()
-    verify(not not c1)
-    verify(id(c1) != id(c2))
-    hash(c1)
-    hash(c2)
-    vereq(cmp(c1, c2), cmp(id(c1), id(c2)))
-    vereq(c1, c1)
-    verify(c1 != c2)
-    verify(not c1 != c1)
-    verify(not c1 == c2)
-    # Note that the module name appears in str/repr, and that varies
-    # depending on whether this test is run standalone or from a framework.
-    verify(str(c1).find('C object at ') >= 0)
-    vereq(str(c1), repr(c1))
-    verify(-1 not in c1)
-    for i in range(10):
-        verify(i in c1)
-    verify(10 not in c1)
-    # Test the default behavior for dynamic classes
-    class D(object):
-        def __getitem__(self, i):
-            if 0 <= i < 10: return i
-            raise IndexError
-    d1 = D()
-    d2 = D()
-    verify(not not d1)
-    verify(id(d1) != id(d2))
-    hash(d1)
-    hash(d2)
-    vereq(cmp(d1, d2), cmp(id(d1), id(d2)))
-    vereq(d1, d1)
-    verify(d1 != d2)
-    verify(not d1 != d1)
-    verify(not d1 == d2)
-    # Note that the module name appears in str/repr, and that varies
-    # depending on whether this test is run standalone or from a framework.
-    verify(str(d1).find('D object at ') >= 0)
-    vereq(str(d1), repr(d1))
-    verify(-1 not in d1)
-    for i in range(10):
-        verify(i in d1)
-    verify(10 not in d1)
-    # Test overridden behavior for static classes
-    class Proxy(object):
-        def __init__(self, x):
-            self.x = x
-        def __nonzero__(self):
-            return not not self.x
-        def __hash__(self):
-            return hash(self.x)
-        def __eq__(self, other):
-            return self.x == other
-        def __ne__(self, other):
-            return self.x != other
-        def __cmp__(self, other):
-            return cmp(self.x, other.x)
-        def __str__(self):
-            return "Proxy:%s" % self.x
-        def __repr__(self):
-            return "Proxy(%r)" % self.x
-        def __contains__(self, value):
-            return value in self.x
-    p0 = Proxy(0)
-    p1 = Proxy(1)
-    p_1 = Proxy(-1)
-    verify(not p0)
-    verify(not not p1)
-    vereq(hash(p0), hash(0))
-    vereq(p0, p0)
-    verify(p0 != p1)
-    verify(not p0 != p0)
-    vereq(not p0, p1)
-    vereq(cmp(p0, p1), -1)
-    vereq(cmp(p0, p0), 0)
-    vereq(cmp(p0, p_1), 1)
-    vereq(str(p0), "Proxy:0")
-    vereq(repr(p0), "Proxy(0)")
-    p10 = Proxy(range(10))
-    verify(-1 not in p10)
-    for i in range(10):
-        verify(i in p10)
-    verify(10 not in p10)
-    # Test overridden behavior for dynamic classes
-    class DProxy(object):
-        def __init__(self, x):
-            self.x = x
-        def __nonzero__(self):
-            return not not self.x
-        def __hash__(self):
-            return hash(self.x)
-        def __eq__(self, other):
-            return self.x == other
-        def __ne__(self, other):
-            return self.x != other
-        def __cmp__(self, other):
-            return cmp(self.x, other.x)
-        def __str__(self):
-            return "DProxy:%s" % self.x
-        def __repr__(self):
-            return "DProxy(%r)" % self.x
-        def __contains__(self, value):
-            return value in self.x
-    p0 = DProxy(0)
-    p1 = DProxy(1)
-    p_1 = DProxy(-1)
-    verify(not p0)
-    verify(not not p1)
-    vereq(hash(p0), hash(0))
-    vereq(p0, p0)
-    verify(p0 != p1)
-    verify(not p0 != p0)
-    vereq(not p0, p1)
-    vereq(cmp(p0, p1), -1)
-    vereq(cmp(p0, p0), 0)
-    vereq(cmp(p0, p_1), 1)
-    vereq(str(p0), "DProxy:0")
-    vereq(repr(p0), "DProxy(0)")
-    p10 = DProxy(range(10))
-    verify(-1 not in p10)
-    for i in range(10):
-        verify(i in p10)
-    verify(10 not in p10)
-    # Safety test for __cmp__
-    def unsafecmp(a, b):
-        try:
-            a.__class__.__cmp__(a, b)
+                __slots__ = [None]
         except TypeError:
             pass
         else:
-            raise TestFailed, "shouldn't allow %s.__cmp__(%r, %r)" % (
-                a.__class__, a, b)
-    unsafecmp(u"123", "123")
-    unsafecmp("123", u"123")
-    unsafecmp(1, 1.0)
-    unsafecmp(1.0, 1)
-    unsafecmp(1, 1L)
-    unsafecmp(1L, 1)
-
-def recursions():
-    if verbose:
-        print "Testing recursion checks ..."
-
-    class Letter(str):
-        def __new__(cls, letter):
-            if letter == 'EPS':
-                return str.__new__(cls)
-            return str.__new__(cls, letter)
-        def __str__(self):
-            if not self:
-                return 'EPS'
-            return self
-    # sys.stdout needs to be the original to trigger the recursion bug
-    import sys
-    test_stdout = sys.stdout
-    sys.stdout = get_original_stdout()
-    try:
-        # nothing should actually be printed, this should raise an exception
-        print Letter('w')
-    except RuntimeError:
-        pass
-    else:
-        raise TestFailed, "expected a RuntimeError for print recursion"
-    sys.stdout = test_stdout
-
-    # Bug #1202533.
-    class A(object):
-        pass
-    A.__mul__ = types.MethodType(lambda self, x: self * x, None, A)
-    try:
-        A()*2
-    except RuntimeError:
-        pass
-    else:
-        raise TestFailed("expected a RuntimeError")
-
-def weakrefs():
-    if verbose: print "Testing weak references..."
-    import weakref
-    class C(object):
-        pass
-    c = C()
-    r = weakref.ref(c)
-    verify(r() is c)
-    del c
-    verify(r() is None)
-    del r
-    class NoWeak(object):
-        __slots__ = ['foo']
-    no = NoWeak()
-    try:
-        weakref.ref(no)
-    except TypeError, msg:
-        verify(str(msg).find("weak reference") >= 0)
-    else:
-        verify(0, "weakref.ref(no) should be illegal")
-    class Weak(object):
-        __slots__ = ['foo', '__weakref__']
-    yes = Weak()
-    r = weakref.ref(yes)
-    verify(r() is yes)
-    del yes
-    verify(r() is None)
-    del r
-
-def properties():
-    if verbose: print "Testing property..."
-    class C(object):
-        def getx(self):
-            return self.__x
-        def setx(self, value):
-            self.__x = value
-        def delx(self):
-            del self.__x
-        x = property(getx, setx, delx, doc="I'm the x property.")
-    a = C()
-    verify(not hasattr(a, "x"))
-    a.x = 42
-    vereq(a._C__x, 42)
-    vereq(a.x, 42)
-    del a.x
-    verify(not hasattr(a, "x"))
-    verify(not hasattr(a, "_C__x"))
-    C.x.__set__(a, 100)
-    vereq(C.x.__get__(a), 100)
-    C.x.__delete__(a)
-    verify(not hasattr(a, "x"))
-
-    raw = C.__dict__['x']
-    verify(isinstance(raw, property))
-
-    attrs = dir(raw)
-    verify("__doc__" in attrs)
-    verify("fget" in attrs)
-    verify("fset" in attrs)
-    verify("fdel" in attrs)
-
-    vereq(raw.__doc__, "I'm the x property.")
-    verify(raw.fget is C.__dict__['getx'])
-    verify(raw.fset is C.__dict__['setx'])
-    verify(raw.fdel is C.__dict__['delx'])
-
-    for attr in "__doc__", "fget", "fset", "fdel":
+            self.fail("[None] slots not caught")
         try:
-            setattr(raw, attr, 42)
-        except TypeError, msg:
-            if str(msg).find('readonly') < 0:
-                raise TestFailed("when setting readonly attr %r on a "
-                                 "property, got unexpected TypeError "
-                                 "msg %r" % (attr, str(msg)))
-        else:
-            raise TestFailed("expected TypeError from trying to set "
-                             "readonly %r attr on a property" % attr)
-
-    class D(object):
-        __getitem__ = property(lambda s: 1/0)
-
-    d = D()
-    try:
-        for i in d:
-            str(i)
-    except ZeroDivisionError:
-        pass
-    else:
-        raise TestFailed, "expected ZeroDivisionError from bad property"
-
-    class E(object):
-        def getter(self):
-            "getter method"
-            return 0
-        def setter(self, value):
-            "setter method"
+            class C(object):
+                __slots__ = ["foo bar"]
+        except TypeError:
             pass
-        prop = property(getter)
-        vereq(prop.__doc__, "getter method")
-        prop2 = property(fset=setter)
-        vereq(prop2.__doc__, None)
+        else:
+            self.fail("['foo bar'] slots not caught")
+        try:
+            class C(object):
+                __slots__ = ["foo\0bar"]
+        except TypeError:
+            pass
+        else:
+            self.fail("['foo\\0bar'] slots not caught")
+        try:
+            class C(object):
+                __slots__ = ["1"]
+        except TypeError:
+            pass
+        else:
+            self.fail("['1'] slots not caught")
+        try:
+            class C(object):
+                __slots__ = [""]
+        except TypeError:
+            pass
+        else:
+            self.fail("[''] slots not caught")
+        class C(object):
+            __slots__ = ["a", "a_b", "_a", "A0123456789Z"]
+        # XXX(nnorwitz): was there supposed to be something tested
+        # from the class above?
 
-    # this segfaulted in 2.5b2
-    try:
-        import _testcapi
-    except ImportError:
-        pass
-    else:
-        class X(object):
-            p = property(_testcapi.test_with_docstring)
+        # Test a single string is not expanded as a sequence.
+        class C(object):
+            __slots__ = "abc"
+        c = C()
+        c.abc = 5
+        self.assertEqual(c.abc, 5)
 
+        # Test unicode slot names
+        try:
+            unicode
+        except NameError:
+            pass
+        else:
+            # Test a single unicode string is not expanded as a sequence.
+            class C(object):
+                __slots__ = unicode("abc")
+            c = C()
+            c.abc = 5
+            self.assertEqual(c.abc, 5)
 
-def properties_plus():
-    class C(object):
-        foo = property(doc="hello")
-        @foo.getter
-        def foo(self):
-            return self._foo
-        @foo.setter
-        def foo(self, value):
-            self._foo = abs(value)
-        @foo.deleter
-        def foo(self):
-            del self._foo
-    c = C()
-    assert C.foo.__doc__ == "hello"
-    assert not hasattr(c, "foo")
-    c.foo = -42
-    assert hasattr(c, '_foo')
-    assert c._foo == 42
-    assert c.foo == 42
-    del c.foo
-    assert not hasattr(c, '_foo')
-    assert not hasattr(c, "foo")
-
-    class D(C):
-        @C.foo.deleter
-        def foo(self):
+            # _unicode_to_string used to modify slots in certain circumstances
+            slots = (unicode("foo"), unicode("bar"))
+            class C(object):
+                __slots__ = slots
+            x = C()
+            x.foo = 5
+            self.assertEqual(x.foo, 5)
+            self.assertEqual(type(slots[0]), unicode)
+            # this used to leak references
             try:
-                del self._foo
-            except AttributeError:
+                class C(object):
+                    __slots__ = [unichr(128)]
+            except (TypeError, UnicodeEncodeError):
                 pass
-    d = D()
-    d.foo = 24
-    assert d.foo == 24
-    del d.foo
-    del d.foo
-
-    class E(object):
-        @property
-        def foo(self):
-            return self._foo
-        @foo.setter
-        def foo(self, value):
-            raise RuntimeError
-        @foo.setter
-        def foo(self, value):
-            self._foo = abs(value)
-        @foo.deleter
-        def foo(self, value=None):
-            del self._foo
-
-    e = E()
-    e.foo = -42
-    assert e.foo == 42
-    del e.foo
-
-    class F(E):
-        @E.foo.deleter
-        def foo(self):
-            del self._foo
-        @foo.setter
-        def foo(self, value):
-            self._foo = max(0, value)
-    f = F()
-    f.foo = -10
-    assert f.foo == 0
-    del f.foo
-
-
-def supers():
-    if verbose: print "Testing super..."
-
-    class A(object):
-        def meth(self, a):
-            return "A(%r)" % a
-
-    vereq(A().meth(1), "A(1)")
-
-    class B(A):
-        def __init__(self):
-            self.__super = super(B, self)
-        def meth(self, a):
-            return "B(%r)" % a + self.__super.meth(a)
-
-    vereq(B().meth(2), "B(2)A(2)")
-
-    class C(A):
-        def meth(self, a):
-            return "C(%r)" % a + self.__super.meth(a)
-    C._C__super = super(C)
-
-    vereq(C().meth(3), "C(3)A(3)")
-
-    class D(C, B):
-        def meth(self, a):
-            return "D(%r)" % a + super(D, self).meth(a)
-
-    vereq(D().meth(4), "D(4)C(4)B(4)A(4)")
-
-    # Test for subclassing super
-
-    class mysuper(super):
-        def __init__(self, *args):
-            return super(mysuper, self).__init__(*args)
-
-    class E(D):
-        def meth(self, a):
-            return "E(%r)" % a + mysuper(E, self).meth(a)
-
-    vereq(E().meth(5), "E(5)D(5)C(5)B(5)A(5)")
-
-    class F(E):
-        def meth(self, a):
-            s = self.__super # == mysuper(F, self)
-            return "F(%r)[%s]" % (a, s.__class__.__name__) + s.meth(a)
-    F._F__super = mysuper(F)
-
-    vereq(F().meth(6), "F(6)[mysuper]E(6)D(6)C(6)B(6)A(6)")
-
-    # Make sure certain errors are raised
-
-    try:
-        super(D, 42)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "shouldn't allow super(D, 42)"
-
-    try:
-        super(D, C())
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "shouldn't allow super(D, C())"
-
-    try:
-        super(D).__get__(12)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "shouldn't allow super(D).__get__(12)"
-
-    try:
-        super(D).__get__(C())
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "shouldn't allow super(D).__get__(C())"
-
-    # Make sure data descriptors can be overridden and accessed via super
-    # (new feature in Python 2.3)
-
-    class DDbase(object):
-        def getx(self): return 42
-        x = property(getx)
-
-    class DDsub(DDbase):
-        def getx(self): return "hello"
-        x = property(getx)
-
-    dd = DDsub()
-    vereq(dd.x, "hello")
-    vereq(super(DDsub, dd).x, 42)
-
-    # Ensure that super() lookup of descriptor from classmethod
-    # works (SF ID# 743627)
-
-    class Base(object):
-        aProp = property(lambda self: "foo")
-
-    class Sub(Base):
-        @classmethod
-        def test(klass):
-            return super(Sub,klass).aProp
-
-    veris(Sub.test(), Base.aProp)
-
-    # Verify that super() doesn't allow keyword args
-    try:
-        super(Base, kw=1)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "super shouldn't accept keyword args"
-
-def inherits():
-    if verbose: print "Testing inheritance from basic types..."
-
-    class hexint(int):
-        def __repr__(self):
-            return hex(self)
-        def __add__(self, other):
-            return hexint(int.__add__(self, other))
-        # (Note that overriding __radd__ doesn't work,
-        # because the int type gets first dibs.)
-    vereq(repr(hexint(7) + 9), "0x10")
-    vereq(repr(hexint(1000) + 7), "0x3ef")
-    a = hexint(12345)
-    vereq(a, 12345)
-    vereq(int(a), 12345)
-    verify(int(a).__class__ is int)
-    vereq(hash(a), hash(12345))
-    verify((+a).__class__ is int)
-    verify((a >> 0).__class__ is int)
-    verify((a << 0).__class__ is int)
-    verify((hexint(0) << 12).__class__ is int)
-    verify((hexint(0) >> 12).__class__ is int)
-
-    class octlong(long):
-        __slots__ = []
-        def __str__(self):
-            s = oct(self)
-            if s[-1] == 'L':
-                s = s[:-1]
-            return s
-        def __add__(self, other):
-            return self.__class__(super(octlong, self).__add__(other))
-        __radd__ = __add__
-    vereq(str(octlong(3) + 5), "010")
-    # (Note that overriding __radd__ here only seems to work
-    # because the example uses a short int left argument.)
-    vereq(str(5 + octlong(3000)), "05675")
-    a = octlong(12345)
-    vereq(a, 12345L)
-    vereq(long(a), 12345L)
-    vereq(hash(a), hash(12345L))
-    verify(long(a).__class__ is long)
-    verify((+a).__class__ is long)
-    verify((-a).__class__ is long)
-    verify((-octlong(0)).__class__ is long)
-    verify((a >> 0).__class__ is long)
-    verify((a << 0).__class__ is long)
-    verify((a - 0).__class__ is long)
-    verify((a * 1).__class__ is long)
-    verify((a ** 1).__class__ is long)
-    verify((a // 1).__class__ is long)
-    verify((1 * a).__class__ is long)
-    verify((a | 0).__class__ is long)
-    verify((a ^ 0).__class__ is long)
-    verify((a & -1L).__class__ is long)
-    verify((octlong(0) << 12).__class__ is long)
-    verify((octlong(0) >> 12).__class__ is long)
-    verify(abs(octlong(0)).__class__ is long)
-
-    # Because octlong overrides __add__, we can't check the absence of +0
-    # optimizations using octlong.
-    class longclone(long):
-        pass
-    a = longclone(1)
-    verify((a + 0).__class__ is long)
-    verify((0 + a).__class__ is long)
-
-    # Check that negative clones don't segfault
-    a = longclone(-1)
-    vereq(a.__dict__, {})
-    vereq(long(a), -1)  # verify PyNumber_Long() copies the sign bit
-
-    class precfloat(float):
-        __slots__ = ['prec']
-        def __init__(self, value=0.0, prec=12):
-            self.prec = int(prec)
-        def __repr__(self):
-            return "%.*g" % (self.prec, self)
-    vereq(repr(precfloat(1.1)), "1.1")
-    a = precfloat(12345)
-    vereq(a, 12345.0)
-    vereq(float(a), 12345.0)
-    verify(float(a).__class__ is float)
-    vereq(hash(a), hash(12345.0))
-    verify((+a).__class__ is float)
-
-    class madcomplex(complex):
-        def __repr__(self):
-            return "%.17gj%+.17g" % (self.imag, self.real)
-    a = madcomplex(-3, 4)
-    vereq(repr(a), "4j-3")
-    base = complex(-3, 4)
-    veris(base.__class__, complex)
-    vereq(a, base)
-    vereq(complex(a), base)
-    veris(complex(a).__class__, complex)
-    a = madcomplex(a)  # just trying another form of the constructor
-    vereq(repr(a), "4j-3")
-    vereq(a, base)
-    vereq(complex(a), base)
-    veris(complex(a).__class__, complex)
-    vereq(hash(a), hash(base))
-    veris((+a).__class__, complex)
-    veris((a + 0).__class__, complex)
-    vereq(a + 0, base)
-    veris((a - 0).__class__, complex)
-    vereq(a - 0, base)
-    veris((a * 1).__class__, complex)
-    vereq(a * 1, base)
-    veris((a / 1).__class__, complex)
-    vereq(a / 1, base)
-
-    class madtuple(tuple):
-        _rev = None
-        def rev(self):
-            if self._rev is not None:
-                return self._rev
-            L = list(self)
-            L.reverse()
-            self._rev = self.__class__(L)
-            return self._rev
-    a = madtuple((1,2,3,4,5,6,7,8,9,0))
-    vereq(a, (1,2,3,4,5,6,7,8,9,0))
-    vereq(a.rev(), madtuple((0,9,8,7,6,5,4,3,2,1)))
-    vereq(a.rev().rev(), madtuple((1,2,3,4,5,6,7,8,9,0)))
-    for i in range(512):
-        t = madtuple(range(i))
-        u = t.rev()
-        v = u.rev()
-        vereq(v, t)
-    a = madtuple((1,2,3,4,5))
-    vereq(tuple(a), (1,2,3,4,5))
-    verify(tuple(a).__class__ is tuple)
-    vereq(hash(a), hash((1,2,3,4,5)))
-    verify(a[:].__class__ is tuple)
-    verify((a * 1).__class__ is tuple)
-    verify((a * 0).__class__ is tuple)
-    verify((a + ()).__class__ is tuple)
-    a = madtuple(())
-    vereq(tuple(a), ())
-    verify(tuple(a).__class__ is tuple)
-    verify((a + a).__class__ is tuple)
-    verify((a * 0).__class__ is tuple)
-    verify((a * 1).__class__ is tuple)
-    verify((a * 2).__class__ is tuple)
-    verify(a[:].__class__ is tuple)
-
-    class madstring(str):
-        _rev = None
-        def rev(self):
-            if self._rev is not None:
-                return self._rev
-            L = list(self)
-            L.reverse()
-            self._rev = self.__class__("".join(L))
-            return self._rev
-    s = madstring("abcdefghijklmnopqrstuvwxyz")
-    vereq(s, "abcdefghijklmnopqrstuvwxyz")
-    vereq(s.rev(), madstring("zyxwvutsrqponmlkjihgfedcba"))
-    vereq(s.rev().rev(), madstring("abcdefghijklmnopqrstuvwxyz"))
-    for i in range(256):
-        s = madstring("".join(map(chr, range(i))))
-        t = s.rev()
-        u = t.rev()
-        vereq(u, s)
-    s = madstring("12345")
-    vereq(str(s), "12345")
-    verify(str(s).__class__ is str)
-
-    base = "\x00" * 5
-    s = madstring(base)
-    vereq(s, base)
-    vereq(str(s), base)
-    verify(str(s).__class__ is str)
-    vereq(hash(s), hash(base))
-    vereq({s: 1}[base], 1)
-    vereq({base: 1}[s], 1)
-    verify((s + "").__class__ is str)
-    vereq(s + "", base)
-    verify(("" + s).__class__ is str)
-    vereq("" + s, base)
-    verify((s * 0).__class__ is str)
-    vereq(s * 0, "")
-    verify((s * 1).__class__ is str)
-    vereq(s * 1, base)
-    verify((s * 2).__class__ is str)
-    vereq(s * 2, base + base)
-    verify(s[:].__class__ is str)
-    vereq(s[:], base)
-    verify(s[0:0].__class__ is str)
-    vereq(s[0:0], "")
-    verify(s.strip().__class__ is str)
-    vereq(s.strip(), base)
-    verify(s.lstrip().__class__ is str)
-    vereq(s.lstrip(), base)
-    verify(s.rstrip().__class__ is str)
-    vereq(s.rstrip(), base)
-    identitytab = ''.join([chr(i) for i in range(256)])
-    verify(s.translate(identitytab).__class__ is str)
-    vereq(s.translate(identitytab), base)
-    verify(s.translate(identitytab, "x").__class__ is str)
-    vereq(s.translate(identitytab, "x"), base)
-    vereq(s.translate(identitytab, "\x00"), "")
-    verify(s.replace("x", "x").__class__ is str)
-    vereq(s.replace("x", "x"), base)
-    verify(s.ljust(len(s)).__class__ is str)
-    vereq(s.ljust(len(s)), base)
-    verify(s.rjust(len(s)).__class__ is str)
-    vereq(s.rjust(len(s)), base)
-    verify(s.center(len(s)).__class__ is str)
-    vereq(s.center(len(s)), base)
-    verify(s.lower().__class__ is str)
-    vereq(s.lower(), base)
-
-    class madunicode(unicode):
-        _rev = None
-        def rev(self):
-            if self._rev is not None:
-                return self._rev
-            L = list(self)
-            L.reverse()
-            self._rev = self.__class__(u"".join(L))
-            return self._rev
-    u = madunicode("ABCDEF")
-    vereq(u, u"ABCDEF")
-    vereq(u.rev(), madunicode(u"FEDCBA"))
-    vereq(u.rev().rev(), madunicode(u"ABCDEF"))
-    base = u"12345"
-    u = madunicode(base)
-    vereq(unicode(u), base)
-    verify(unicode(u).__class__ is unicode)
-    vereq(hash(u), hash(base))
-    vereq({u: 1}[base], 1)
-    vereq({base: 1}[u], 1)
-    verify(u.strip().__class__ is unicode)
-    vereq(u.strip(), base)
-    verify(u.lstrip().__class__ is unicode)
-    vereq(u.lstrip(), base)
-    verify(u.rstrip().__class__ is unicode)
-    vereq(u.rstrip(), base)
-    verify(u.replace(u"x", u"x").__class__ is unicode)
-    vereq(u.replace(u"x", u"x"), base)
-    verify(u.replace(u"xy", u"xy").__class__ is unicode)
-    vereq(u.replace(u"xy", u"xy"), base)
-    verify(u.center(len(u)).__class__ is unicode)
-    vereq(u.center(len(u)), base)
-    verify(u.ljust(len(u)).__class__ is unicode)
-    vereq(u.ljust(len(u)), base)
-    verify(u.rjust(len(u)).__class__ is unicode)
-    vereq(u.rjust(len(u)), base)
-    verify(u.lower().__class__ is unicode)
-    vereq(u.lower(), base)
-    verify(u.upper().__class__ is unicode)
-    vereq(u.upper(), base)
-    verify(u.capitalize().__class__ is unicode)
-    vereq(u.capitalize(), base)
-    verify(u.title().__class__ is unicode)
-    vereq(u.title(), base)
-    verify((u + u"").__class__ is unicode)
-    vereq(u + u"", base)
-    verify((u"" + u).__class__ is unicode)
-    vereq(u"" + u, base)
-    verify((u * 0).__class__ is unicode)
-    vereq(u * 0, u"")
-    verify((u * 1).__class__ is unicode)
-    vereq(u * 1, base)
-    verify((u * 2).__class__ is unicode)
-    vereq(u * 2, base + base)
-    verify(u[:].__class__ is unicode)
-    vereq(u[:], base)
-    verify(u[0:0].__class__ is unicode)
-    vereq(u[0:0], u"")
-
-    class sublist(list):
-        pass
-    a = sublist(range(5))
-    vereq(a, range(5))
-    a.append("hello")
-    vereq(a, range(5) + ["hello"])
-    a[5] = 5
-    vereq(a, range(6))
-    a.extend(range(6, 20))
-    vereq(a, range(20))
-    a[-5:] = []
-    vereq(a, range(15))
-    del a[10:15]
-    vereq(len(a), 10)
-    vereq(a, range(10))
-    vereq(list(a), range(10))
-    vereq(a[0], 0)
-    vereq(a[9], 9)
-    vereq(a[-10], 0)
-    vereq(a[-1], 9)
-    vereq(a[:5], range(5))
-
-    class CountedInput(file):
-        """Counts lines read by self.readline().
-
-        self.lineno is the 0-based ordinal of the last line read, up to
-        a maximum of one greater than the number of lines in the file.
-
-        self.ateof is true if and only if the final "" line has been read,
-        at which point self.lineno stops incrementing, and further calls
-        to readline() continue to return "".
-        """
-
-        lineno = 0
-        ateof = 0
-        def readline(self):
-            if self.ateof:
-                return ""
-            s = file.readline(self)
-            # Next line works too.
-            # s = super(CountedInput, self).readline()
-            self.lineno += 1
-            if s == "":
-                self.ateof = 1
-            return s
-
-    f = file(name=TESTFN, mode='w')
-    lines = ['a\n', 'b\n', 'c\n']
-    try:
-        f.writelines(lines)
-        f.close()
-        f = CountedInput(TESTFN)
-        for (i, expected) in zip(range(1, 5) + [4], lines + 2 * [""]):
-            got = f.readline()
-            vereq(expected, got)
-            vereq(f.lineno, i)
-            vereq(f.ateof, (i > len(lines)))
-        f.close()
-    finally:
-        try:
-            f.close()
-        except:
-            pass
-        try:
-            import os
-            os.unlink(TESTFN)
-        except:
-            pass
-
-def keywords():
-    if verbose:
-        print "Testing keyword args to basic type constructors ..."
-    vereq(int(x=1), 1)
-    vereq(float(x=2), 2.0)
-    vereq(long(x=3), 3L)
-    vereq(complex(imag=42, real=666), complex(666, 42))
-    vereq(str(object=500), '500')
-    vereq(unicode(string='abc', errors='strict'), u'abc')
-    vereq(tuple(sequence=range(3)), (0, 1, 2))
-    vereq(list(sequence=(0, 1, 2)), range(3))
-    # note: as of Python 2.3, dict() no longer has an "items" keyword arg
-
-    for constructor in (int, float, long, complex, str, unicode,
-                        tuple, list, file):
-        try:
-            constructor(bogus_keyword_arg=1)
-        except TypeError:
-            pass
-        else:
-            raise TestFailed("expected TypeError from bogus keyword "
-                             "argument to %r" % constructor)
-
-def restricted():
-    # XXX This test is disabled because rexec is not deemed safe
-    return
-    import rexec
-    if verbose:
-        print "Testing interaction with restricted execution ..."
-
-    sandbox = rexec.RExec()
-
-    code1 = """f = open(%r, 'w')""" % TESTFN
-    code2 = """f = file(%r, 'w')""" % TESTFN
-    code3 = """\
-f = open(%r)
-t = type(f)  # a sneaky way to get the file() constructor
-f.close()
-f = t(%r, 'w')  # rexec can't catch this by itself
-""" % (TESTFN, TESTFN)
-
-    f = open(TESTFN, 'w')  # Create the file so code3 can find it.
-    f.close()
-
-    try:
-        for code in code1, code2, code3:
-            try:
-                sandbox.r_exec(code)
-            except IOError, msg:
-                if str(msg).find("restricted") >= 0:
-                    outcome = "OK"
-                else:
-                    outcome = "got an exception, but not an expected one"
             else:
-                outcome = "expected a restricted-execution exception"
+                self.fail("[unichr(128)] slots not caught")
 
-            if outcome != "OK":
-                raise TestFailed("%s, in %r" % (outcome, code))
-
-    finally:
-        try:
-            import os
-            os.unlink(TESTFN)
-        except:
-            pass
-
-def str_subclass_as_dict_key():
-    if verbose:
-        print "Testing a str subclass used as dict key .."
-
-    class cistr(str):
-        """Sublcass of str that computes __eq__ case-insensitively.
-
-        Also computes a hash code of the string in canonical form.
-        """
-
-        def __init__(self, value):
-            self.canonical = value.lower()
-            self.hashcode = hash(self.canonical)
-
-        def __eq__(self, other):
-            if not isinstance(other, cistr):
-                other = cistr(other)
-            return self.canonical == other.canonical
-
-        def __hash__(self):
-            return self.hashcode
-
-    vereq(cistr('ABC'), 'abc')
-    vereq('aBc', cistr('ABC'))
-    vereq(str(cistr('ABC')), 'ABC')
-
-    d = {cistr('one'): 1, cistr('two'): 2, cistr('tHree'): 3}
-    vereq(d[cistr('one')], 1)
-    vereq(d[cistr('tWo')], 2)
-    vereq(d[cistr('THrEE')], 3)
-    verify(cistr('ONe') in d)
-    vereq(d.get(cistr('thrEE')), 3)
-
-def classic_comparisons():
-    if verbose: print "Testing classic comparisons..."
-    class classic:
-        pass
-    for base in (classic, int, object):
-        if verbose: print "        (base = %s)" % base
-        class C(base):
-            def __init__(self, value):
-                self.value = int(value)
-            def __cmp__(self, other):
-                if isinstance(other, C):
-                    return cmp(self.value, other.value)
-                if isinstance(other, int) or isinstance(other, long):
-                    return cmp(self.value, other)
-                return NotImplemented
-        c1 = C(1)
-        c2 = C(2)
-        c3 = C(3)
-        vereq(c1, 1)
-        c = {1: c1, 2: c2, 3: c3}
-        for x in 1, 2, 3:
-            for y in 1, 2, 3:
-                verify(cmp(c[x], c[y]) == cmp(x, y), "x=%d, y=%d" % (x, y))
-                for op in "<", "<=", "==", "!=", ">", ">=":
-                    verify(eval("c[x] %s c[y]" % op) == eval("x %s y" % op),
-                           "x=%d, y=%d" % (x, y))
-                verify(cmp(c[x], y) == cmp(x, y), "x=%d, y=%d" % (x, y))
-                verify(cmp(x, c[y]) == cmp(x, y), "x=%d, y=%d" % (x, y))
-
-def rich_comparisons():
-    if verbose:
-        print "Testing rich comparisons..."
-    class Z(complex):
-        pass
-    z = Z(1)
-    vereq(z, 1+0j)
-    vereq(1+0j, z)
-    class ZZ(complex):
-        def __eq__(self, other):
-            try:
-                return abs(self - other) <= 1e-6
-            except:
-                return NotImplemented
-    zz = ZZ(1.0000003)
-    vereq(zz, 1+0j)
-    vereq(1+0j, zz)
-
-    class classic:
-        pass
-    for base in (classic, int, object, list):
-        if verbose: print "        (base = %s)" % base
-        class C(base):
-            def __init__(self, value):
-                self.value = int(value)
-            def __cmp__(self, other):
-                raise TestFailed, "shouldn't call __cmp__"
-            def __eq__(self, other):
-                if isinstance(other, C):
-                    return self.value == other.value
-                if isinstance(other, int) or isinstance(other, long):
-                    return self.value == other
-                return NotImplemented
-            def __ne__(self, other):
-                if isinstance(other, C):
-                    return self.value != other.value
-                if isinstance(other, int) or isinstance(other, long):
-                    return self.value != other
-                return NotImplemented
-            def __lt__(self, other):
-                if isinstance(other, C):
-                    return self.value < other.value
-                if isinstance(other, int) or isinstance(other, long):
-                    return self.value < other
-                return NotImplemented
-            def __le__(self, other):
-                if isinstance(other, C):
-                    return self.value <= other.value
-                if isinstance(other, int) or isinstance(other, long):
-                    return self.value <= other
-                return NotImplemented
-            def __gt__(self, other):
-                if isinstance(other, C):
-                    return self.value > other.value
-                if isinstance(other, int) or isinstance(other, long):
-                    return self.value > other
-                return NotImplemented
-            def __ge__(self, other):
-                if isinstance(other, C):
-                    return self.value >= other.value
-                if isinstance(other, int) or isinstance(other, long):
-                    return self.value >= other
-                return NotImplemented
-        c1 = C(1)
-        c2 = C(2)
-        c3 = C(3)
-        vereq(c1, 1)
-        c = {1: c1, 2: c2, 3: c3}
-        for x in 1, 2, 3:
-            for y in 1, 2, 3:
-                for op in "<", "<=", "==", "!=", ">", ">=":
-                    verify(eval("c[x] %s c[y]" % op) == eval("x %s y" % op),
-                           "x=%d, y=%d" % (x, y))
-                    verify(eval("c[x] %s y" % op) == eval("x %s y" % op),
-                           "x=%d, y=%d" % (x, y))
-                    verify(eval("x %s c[y]" % op) == eval("x %s y" % op),
-                           "x=%d, y=%d" % (x, y))
-
-def coercions():
-    if verbose: print "Testing coercions..."
-    class I(int): pass
-    coerce(I(0), 0)
-    coerce(0, I(0))
-    class L(long): pass
-    coerce(L(0), 0)
-    coerce(L(0), 0L)
-    coerce(0, L(0))
-    coerce(0L, L(0))
-    class F(float): pass
-    coerce(F(0), 0)
-    coerce(F(0), 0L)
-    coerce(F(0), 0.)
-    coerce(0, F(0))
-    coerce(0L, F(0))
-    coerce(0., F(0))
-    class C(complex): pass
-    coerce(C(0), 0)
-    coerce(C(0), 0L)
-    coerce(C(0), 0.)
-    coerce(C(0), 0j)
-    coerce(0, C(0))
-    coerce(0L, C(0))
-    coerce(0., C(0))
-    coerce(0j, C(0))
-
-def descrdoc():
-    if verbose: print "Testing descriptor doc strings..."
-    def check(descr, what):
-        vereq(descr.__doc__, what)
-    check(file.closed, "True if the file is closed") # getset descriptor
-    check(file.name, "file name") # member descriptor
-
-def setclass():
-    if verbose: print "Testing __class__ assignment..."
-    class C(object): pass
-    class D(object): pass
-    class E(object): pass
-    class F(D, E): pass
-    for cls in C, D, E, F:
-        for cls2 in C, D, E, F:
-            x = cls()
-            x.__class__ = cls2
-            verify(x.__class__ is cls2)
-            x.__class__ = cls
-            verify(x.__class__ is cls)
-    def cant(x, C):
-        try:
-            x.__class__ = C
-        except TypeError:
-            pass
-        else:
-            raise TestFailed, "shouldn't allow %r.__class__ = %r" % (x, C)
-        try:
-            delattr(x, "__class__")
-        except TypeError:
-            pass
-        else:
-            raise TestFailed, "shouldn't allow del %r.__class__" % x
-    cant(C(), list)
-    cant(list(), C)
-    cant(C(), 1)
-    cant(C(), object)
-    cant(object(), list)
-    cant(list(), object)
-    class Int(int): __slots__ = []
-    cant(2, Int)
-    cant(Int(), int)
-    cant(True, int)
-    cant(2, bool)
-    o = object()
-    cant(o, type(1))
-    cant(o, type(None))
-    del o
-    class G(object):
-        __slots__ = ["a", "b"]
-    class H(object):
-        __slots__ = ["b", "a"]
-    try:
-        unicode
-    except NameError:
-        class I(object):
-            __slots__ = ["a", "b"]
-    else:
-        class I(object):
-            __slots__ = [unicode("a"), unicode("b")]
-    class J(object):
-        __slots__ = ["c", "b"]
-    class K(object):
-        __slots__ = ["a", "b", "d"]
-    class L(H):
-        __slots__ = ["e"]
-    class M(I):
-        __slots__ = ["e"]
-    class N(J):
-        __slots__ = ["__weakref__"]
-    class P(J):
-        __slots__ = ["__dict__"]
-    class Q(J):
-        pass
-    class R(J):
-        __slots__ = ["__dict__", "__weakref__"]
-
-    for cls, cls2 in ((G, H), (G, I), (I, H), (Q, R), (R, Q)):
-        x = cls()
-        x.a = 1
-        x.__class__ = cls2
-        verify(x.__class__ is cls2,
-               "assigning %r as __class__ for %r silently failed" % (cls2, x))
-        vereq(x.a, 1)
-        x.__class__ = cls
-        verify(x.__class__ is cls,
-               "assigning %r as __class__ for %r silently failed" % (cls, x))
-        vereq(x.a, 1)
-    for cls in G, J, K, L, M, N, P, R, list, Int:
-        for cls2 in G, J, K, L, M, N, P, R, list, Int:
-            if cls is cls2:
-                continue
-            cant(cls(), cls2)
-
-def setdict():
-    if verbose: print "Testing __dict__ assignment..."
-    class C(object): pass
-    a = C()
-    a.__dict__ = {'b': 1}
-    vereq(a.b, 1)
-    def cant(x, dict):
-        try:
-            x.__dict__ = dict
-        except (AttributeError, TypeError):
-            pass
-        else:
-            raise TestFailed, "shouldn't allow %r.__dict__ = %r" % (x, dict)
-    cant(a, None)
-    cant(a, [])
-    cant(a, 1)
-    del a.__dict__ # Deleting __dict__ is allowed
-
-    class Base(object):
-        pass
-    def verify_dict_readonly(x):
-        """
-        x has to be an instance of a class inheriting from Base.
-        """
-        cant(x, {})
-        try:
-            del x.__dict__
-        except (AttributeError, TypeError):
-            pass
-        else:
-            raise TestFailed, "shouldn't allow del %r.__dict__" % x
-        dict_descr = Base.__dict__["__dict__"]
-        try:
-            dict_descr.__set__(x, {})
-        except (AttributeError, TypeError):
-            pass
-        else:
-            raise TestFailed, "dict_descr allowed access to %r's dict" % x
-
-    # Classes don't allow __dict__ assignment and have readonly dicts
-    class Meta1(type, Base):
-        pass
-    class Meta2(Base, type):
-        pass
-    class D(object):
-        __metaclass__ = Meta1
-    class E(object):
-        __metaclass__ = Meta2
-    for cls in C, D, E:
-        verify_dict_readonly(cls)
-        class_dict = cls.__dict__
-        try:
-            class_dict["spam"] = "eggs"
-        except TypeError:
-            pass
-        else:
-            raise TestFailed, "%r's __dict__ can be modified" % cls
-
-    # Modules also disallow __dict__ assignment
-    class Module1(types.ModuleType, Base):
-        pass
-    class Module2(Base, types.ModuleType):
-        pass
-    for ModuleType in Module1, Module2:
-        mod = ModuleType("spam")
-        verify_dict_readonly(mod)
-        mod.__dict__["spam"] = "eggs"
-
-    # Exception's __dict__ can be replaced, but not deleted
-    class Exception1(Exception, Base):
-        pass
-    class Exception2(Base, Exception):
-        pass
-    for ExceptionType in Exception, Exception1, Exception2:
-        e = ExceptionType()
-        e.__dict__ = {"a": 1}
-        vereq(e.a, 1)
-        try:
-            del e.__dict__
-        except (TypeError, AttributeError):
-            pass
-        else:
-            raise TestFaied, "%r's __dict__ can be deleted" % e
-
-
-def pickles():
-    if verbose:
-        print "Testing pickling and copying new-style classes and objects..."
-    import pickle, cPickle
-
-    def sorteditems(d):
-        L = d.items()
-        L.sort()
-        return L
-
-    global C
-    class C(object):
-        def __init__(self, a, b):
-            super(C, self).__init__()
-            self.a = a
-            self.b = b
-        def __repr__(self):
-            return "C(%r, %r)" % (self.a, self.b)
-
-    global C1
-    class C1(list):
-        def __new__(cls, a, b):
-            return super(C1, cls).__new__(cls)
-        def __getnewargs__(self):
-            return (self.a, self.b)
-        def __init__(self, a, b):
-            self.a = a
-            self.b = b
-        def __repr__(self):
-            return "C1(%r, %r)<%r>" % (self.a, self.b, list(self))
-
-    global C2
-    class C2(int):
-        def __new__(cls, a, b, val=0):
-            return super(C2, cls).__new__(cls, val)
-        def __getnewargs__(self):
-            return (self.a, self.b, int(self))
-        def __init__(self, a, b, val=0):
-            self.a = a
-            self.b = b
-        def __repr__(self):
-            return "C2(%r, %r)<%r>" % (self.a, self.b, int(self))
-
-    global C3
-    class C3(object):
-        def __init__(self, foo):
-            self.foo = foo
-        def __getstate__(self):
-            return self.foo
-        def __setstate__(self, foo):
-            self.foo = foo
-
-    global C4classic, C4
-    class C4classic: # classic
-        pass
-    class C4(C4classic, object): # mixed inheritance
-        pass
-
-    for p in pickle, cPickle:
-        for bin in 0, 1:
-            if verbose:
-                print p.__name__, ["text", "binary"][bin]
-
-            for cls in C, C1, C2:
-                s = p.dumps(cls, bin)
-                cls2 = p.loads(s)
-                verify(cls2 is cls)
-
-            a = C1(1, 2); a.append(42); a.append(24)
-            b = C2("hello", "world", 42)
-            s = p.dumps((a, b), bin)
-            x, y = p.loads(s)
-            vereq(x.__class__, a.__class__)
-            vereq(sorteditems(x.__dict__), sorteditems(a.__dict__))
-            vereq(y.__class__, b.__class__)
-            vereq(sorteditems(y.__dict__), sorteditems(b.__dict__))
-            vereq(repr(x), repr(a))
-            vereq(repr(y), repr(b))
-            if verbose:
-                print "a = x =", a
-                print "b = y =", b
-            # Test for __getstate__ and __setstate__ on new style class
-            u = C3(42)
-            s = p.dumps(u, bin)
-            v = p.loads(s)
-            veris(u.__class__, v.__class__)
-            vereq(u.foo, v.foo)
-            # Test for picklability of hybrid class
-            u = C4()
-            u.foo = 42
-            s = p.dumps(u, bin)
-            v = p.loads(s)
-            veris(u.__class__, v.__class__)
-            vereq(u.foo, v.foo)
-
-    # Testing copy.deepcopy()
-    if verbose:
-        print "deepcopy"
-    import copy
-    for cls in C, C1, C2:
-        cls2 = copy.deepcopy(cls)
-        verify(cls2 is cls)
-
-    a = C1(1, 2); a.append(42); a.append(24)
-    b = C2("hello", "world", 42)
-    x, y = copy.deepcopy((a, b))
-    vereq(x.__class__, a.__class__)
-    vereq(sorteditems(x.__dict__), sorteditems(a.__dict__))
-    vereq(y.__class__, b.__class__)
-    vereq(sorteditems(y.__dict__), sorteditems(b.__dict__))
-    vereq(repr(x), repr(a))
-    vereq(repr(y), repr(b))
-    if verbose:
-        print "a = x =", a
-        print "b = y =", b
-
-def pickleslots():
-    if verbose: print "Testing pickling of classes with __slots__ ..."
-    import pickle, cPickle
-    # Pickling of classes with __slots__ but without __getstate__ should fail
-    global B, C, D, E
-    class B(object):
-        pass
-    for base in [object, B]:
-        class C(base):
-            __slots__ = ['a']
-        class D(C):
-            pass
-        try:
-            pickle.dumps(C())
-        except TypeError:
-            pass
-        else:
-            raise TestFailed, "should fail: pickle C instance - %s" % base
-        try:
-            cPickle.dumps(C())
-        except TypeError:
-            pass
-        else:
-            raise TestFailed, "should fail: cPickle C instance - %s" % base
-        try:
-            pickle.dumps(C())
-        except TypeError:
-            pass
-        else:
-            raise TestFailed, "should fail: pickle D instance - %s" % base
-        try:
-            cPickle.dumps(D())
-        except TypeError:
-            pass
-        else:
-            raise TestFailed, "should fail: cPickle D instance - %s" % base
-        # Give C a nice generic __getstate__ and __setstate__
-        class C(base):
-            __slots__ = ['a']
-            def __getstate__(self):
-                try:
-                    d = self.__dict__.copy()
-                except AttributeError:
-                    d = {}
-                for cls in self.__class__.__mro__:
-                    for sn in cls.__dict__.get('__slots__', ()):
-                        try:
-                            d[sn] = getattr(self, sn)
-                        except AttributeError:
-                            pass
-                return d
-            def __setstate__(self, d):
-                for k, v in d.items():
-                    setattr(self, k, v)
-        class D(C):
-            pass
-        # Now it should work
+        # Test leaks
+        class Counted(object):
+            counter = 0    # counts the number of instances alive
+            def __init__(self):
+                Counted.counter += 1
+            def __del__(self):
+                Counted.counter -= 1
+        class C(object):
+            __slots__ = ['a', 'b', 'c']
         x = C()
-        y = pickle.loads(pickle.dumps(x))
-        vereq(hasattr(y, 'a'), 0)
-        y = cPickle.loads(cPickle.dumps(x))
-        vereq(hasattr(y, 'a'), 0)
-        x.a = 42
-        y = pickle.loads(pickle.dumps(x))
-        vereq(y.a, 42)
-        y = cPickle.loads(cPickle.dumps(x))
-        vereq(y.a, 42)
+        x.a = Counted()
+        x.b = Counted()
+        x.c = Counted()
+        self.assertEqual(Counted.counter, 3)
+        del x
+        self.assertEqual(Counted.counter, 0)
+        class D(C):
+            pass
         x = D()
-        x.a = 42
-        x.b = 100
-        y = pickle.loads(pickle.dumps(x))
-        vereq(y.a + y.b, 142)
-        y = cPickle.loads(cPickle.dumps(x))
-        vereq(y.a + y.b, 142)
-        # A subclass that adds a slot should also work
-        class E(C):
-            __slots__ = ['b']
+        x.a = Counted()
+        x.z = Counted()
+        self.assertEqual(Counted.counter, 2)
+        del x
+        self.assertEqual(Counted.counter, 0)
+        class E(D):
+            __slots__ = ['e']
         x = E()
-        x.a = 42
-        x.b = "foo"
-        y = pickle.loads(pickle.dumps(x))
-        vereq(y.a, x.a)
-        vereq(y.b, x.b)
-        y = cPickle.loads(cPickle.dumps(x))
-        vereq(y.a, x.a)
-        vereq(y.b, x.b)
+        x.a = Counted()
+        x.z = Counted()
+        x.e = Counted()
+        self.assertEqual(Counted.counter, 3)
+        del x
+        self.assertEqual(Counted.counter, 0)
 
-def copies():
-    if verbose: print "Testing copy.copy() and copy.deepcopy()..."
-    import copy
-    class C(object):
-        pass
+        # Test cyclical leaks [SF bug 519621]
+        class F(object):
+            __slots__ = ['a', 'b']
+        log = []
+        s = F()
+        s.a = [Counted(), s]
+        self.assertEqual(Counted.counter, 1)
+        s = None
+        import gc
+        gc.collect()
+        self.assertEqual(Counted.counter, 0)
 
-    a = C()
-    a.foo = 12
-    b = copy.copy(a)
-    vereq(b.__dict__, a.__dict__)
+        # Test lookup leaks [SF bug 572567]
+        import sys,gc
+        class G(object):
+            def __cmp__(self, other):
+                return 0
+        g = G()
+        orig_objects = len(gc.get_objects())
+        for i in xrange(10):
+            g==g
+        new_objects = len(gc.get_objects())
+        self.assertEqual(orig_objects, new_objects)
+        class H(object):
+            __slots__ = ['a', 'b']
+            def __init__(self):
+                self.a = 1
+                self.b = 2
+            def __del__(self_):
+                self.assertEqual(self_.a, 1)
+                self.assertEqual(self_.b, 2)
 
-    a.bar = [1,2,3]
-    c = copy.copy(a)
-    vereq(c.bar, a.bar)
-    verify(c.bar is a.bar)
+        save_stderr = sys.stderr
+        sys.stderr = sys.stdout
+        h = H()
+        try:
+            del h
+        finally:
+            sys.stderr = save_stderr
 
-    d = copy.deepcopy(a)
-    vereq(d.__dict__, a.__dict__)
-    a.bar.append(4)
-    vereq(d.bar, [1,2,3])
+    def test_slots_special(self):
+        # Testing __dict__ and __weakref__ in __slots__...
+        class D(object):
+            __slots__ = ["__dict__"]
+        a = D()
+        self.assert_(hasattr(a, "__dict__"))
+        self.assertFalse(hasattr(a, "__weakref__"))
+        a.foo = 42
+        self.assertEqual(a.__dict__, {"foo": 42})
 
-def binopoverride():
-    if verbose: print "Testing overrides of binary operations..."
-    class I(int):
-        def __repr__(self):
-            return "I(%r)" % int(self)
-        def __add__(self, other):
-            return I(int(self) + int(other))
-        __radd__ = __add__
-        def __pow__(self, other, mod=None):
-            if mod is None:
-                return I(pow(int(self), int(other)))
+        class W(object):
+            __slots__ = ["__weakref__"]
+        a = W()
+        self.assert_(hasattr(a, "__weakref__"))
+        self.assertFalse(hasattr(a, "__dict__"))
+        try:
+            a.foo = 42
+        except AttributeError:
+            pass
+        else:
+            self.fail("shouldn't be allowed to set a.foo")
+
+        class C1(W, D):
+            __slots__ = []
+        a = C1()
+        self.assert_(hasattr(a, "__dict__"))
+        self.assert_(hasattr(a, "__weakref__"))
+        a.foo = 42
+        self.assertEqual(a.__dict__, {"foo": 42})
+
+        class C2(D, W):
+            __slots__ = []
+        a = C2()
+        self.assert_(hasattr(a, "__dict__"))
+        self.assert_(hasattr(a, "__weakref__"))
+        a.foo = 42
+        self.assertEqual(a.__dict__, {"foo": 42})
+
+    def test_dynamics(self):
+        # Testing class attribute propagation...
+        class D(object):
+            pass
+        class E(D):
+            pass
+        class F(D):
+            pass
+        D.foo = 1
+        self.assertEqual(D.foo, 1)
+        # Test that dynamic attributes are inherited
+        self.assertEqual(E.foo, 1)
+        self.assertEqual(F.foo, 1)
+        # Test dynamic instances
+        class C(object):
+            pass
+        a = C()
+        self.assertFalse(hasattr(a, "foobar"))
+        C.foobar = 2
+        self.assertEqual(a.foobar, 2)
+        C.method = lambda self: 42
+        self.assertEqual(a.method(), 42)
+        C.__repr__ = lambda self: "C()"
+        self.assertEqual(repr(a), "C()")
+        C.__int__ = lambda self: 100
+        self.assertEqual(int(a), 100)
+        self.assertEqual(a.foobar, 2)
+        self.assertFalse(hasattr(a, "spam"))
+        def mygetattr(self, name):
+            if name == "spam":
+                return "spam"
+            raise AttributeError
+        C.__getattr__ = mygetattr
+        self.assertEqual(a.spam, "spam")
+        a.new = 12
+        self.assertEqual(a.new, 12)
+        def mysetattr(self, name, value):
+            if name == "spam":
+                raise AttributeError
+            return object.__setattr__(self, name, value)
+        C.__setattr__ = mysetattr
+        try:
+            a.spam = "not spam"
+        except AttributeError:
+            pass
+        else:
+            self.fail("expected AttributeError")
+        self.assertEqual(a.spam, "spam")
+        class D(C):
+            pass
+        d = D()
+        d.foo = 1
+        self.assertEqual(d.foo, 1)
+
+        # Test handling of int*seq and seq*int
+        class I(int):
+            pass
+        self.assertEqual("a"*I(2), "aa")
+        self.assertEqual(I(2)*"a", "aa")
+        self.assertEqual(2*I(3), 6)
+        self.assertEqual(I(3)*2, 6)
+        self.assertEqual(I(3)*I(2), 6)
+
+        # Test handling of long*seq and seq*long
+        class L(long):
+            pass
+        self.assertEqual("a"*L(2L), "aa")
+        self.assertEqual(L(2L)*"a", "aa")
+        self.assertEqual(2*L(3), 6)
+        self.assertEqual(L(3)*2, 6)
+        self.assertEqual(L(3)*L(2), 6)
+
+        # Test comparison of classes with dynamic metaclasses
+        class dynamicmetaclass(type):
+            pass
+        class someclass:
+            __metaclass__ = dynamicmetaclass
+        self.assertNotEqual(someclass, object)
+
+    def test_errors(self):
+        # Testing errors...
+        try:
+            class C(list, dict):
+                pass
+        except TypeError:
+            pass
+        else:
+            self.fail("inheritance from both list and dict should be illegal")
+
+        try:
+            class C(object, None):
+                pass
+        except TypeError:
+            pass
+        else:
+            self.fail("inheritance from non-type should be illegal")
+        class Classic:
+            pass
+
+        try:
+            class C(type(len)):
+                pass
+        except TypeError:
+            pass
+        else:
+            self.fail("inheritance from CFunction should be illegal")
+
+        try:
+            class C(object):
+                __slots__ = 1
+        except TypeError:
+            pass
+        else:
+            self.fail("__slots__ = 1 should be illegal")
+
+        try:
+            class C(object):
+                __slots__ = [1]
+        except TypeError:
+            pass
+        else:
+            self.fail("__slots__ = [1] should be illegal")
+
+        class M1(type):
+            pass
+        class M2(type):
+            pass
+        class A1(object):
+            __metaclass__ = M1
+        class A2(object):
+            __metaclass__ = M2
+        try:
+            class B(A1, A2):
+                pass
+        except TypeError:
+            pass
+        else:
+            self.fail("finding the most derived metaclass should have failed")
+
+    def test_classmethods(self):
+        # Testing class methods...
+        class C(object):
+            def foo(*a): return a
+            goo = classmethod(foo)
+        c = C()
+        self.assertEqual(C.goo(1), (C, 1))
+        self.assertEqual(c.goo(1), (C, 1))
+        self.assertEqual(c.foo(1), (c, 1))
+        class D(C):
+            pass
+        d = D()
+        self.assertEqual(D.goo(1), (D, 1))
+        self.assertEqual(d.goo(1), (D, 1))
+        self.assertEqual(d.foo(1), (d, 1))
+        self.assertEqual(D.foo(d, 1), (d, 1))
+        # Test for a specific crash (SF bug 528132)
+        def f(cls, arg): return (cls, arg)
+        ff = classmethod(f)
+        self.assertEqual(ff.__get__(0, int)(42), (int, 42))
+        self.assertEqual(ff.__get__(0)(42), (int, 42))
+
+        # Test super() with classmethods (SF bug 535444)
+        self.assertEqual(C.goo.im_self, C)
+        self.assertEqual(D.goo.im_self, D)
+        self.assertEqual(super(D,D).goo.im_self, D)
+        self.assertEqual(super(D,d).goo.im_self, D)
+        self.assertEqual(super(D,D).goo(), (D,))
+        self.assertEqual(super(D,d).goo(), (D,))
+
+        # Verify that argument is checked for callability (SF bug 753451)
+        try:
+            classmethod(1).__get__(1)
+        except TypeError:
+            pass
+        else:
+            self.fail("classmethod should check for callability")
+
+        # Verify that classmethod() doesn't allow keyword args
+        try:
+            classmethod(f, kw=1)
+        except TypeError:
+            pass
+        else:
+            self.fail("classmethod shouldn't accept keyword args")
+
+    def test_classmethods_in_c(self):
+        # Testing C-based class methods...
+        import xxsubtype as spam
+        a = (1, 2, 3)
+        d = {'abc': 123}
+        x, a1, d1 = spam.spamlist.classmeth(*a, **d)
+        self.assertEqual(x, spam.spamlist)
+        self.assertEqual(a, a1)
+        self.assertEqual(d, d1)
+        x, a1, d1 = spam.spamlist().classmeth(*a, **d)
+        self.assertEqual(x, spam.spamlist)
+        self.assertEqual(a, a1)
+        self.assertEqual(d, d1)
+
+    def test_staticmethods(self):
+        # Testing static methods...
+        class C(object):
+            def foo(*a): return a
+            goo = staticmethod(foo)
+        c = C()
+        self.assertEqual(C.goo(1), (1,))
+        self.assertEqual(c.goo(1), (1,))
+        self.assertEqual(c.foo(1), (c, 1,))
+        class D(C):
+            pass
+        d = D()
+        self.assertEqual(D.goo(1), (1,))
+        self.assertEqual(d.goo(1), (1,))
+        self.assertEqual(d.foo(1), (d, 1))
+        self.assertEqual(D.foo(d, 1), (d, 1))
+
+    def test_staticmethods_in_c(self):
+        # Testing C-based static methods...
+        import xxsubtype as spam
+        a = (1, 2, 3)
+        d = {"abc": 123}
+        x, a1, d1 = spam.spamlist.staticmeth(*a, **d)
+        self.assertEqual(x, None)
+        self.assertEqual(a, a1)
+        self.assertEqual(d, d1)
+        x, a1, d2 = spam.spamlist().staticmeth(*a, **d)
+        self.assertEqual(x, None)
+        self.assertEqual(a, a1)
+        self.assertEqual(d, d1)
+
+    def test_classic(self):
+        # Testing classic classes...
+        class C:
+            def foo(*a): return a
+            goo = classmethod(foo)
+        c = C()
+        self.assertEqual(C.goo(1), (C, 1))
+        self.assertEqual(c.goo(1), (C, 1))
+        self.assertEqual(c.foo(1), (c, 1))
+        class D(C):
+            pass
+        d = D()
+        self.assertEqual(D.goo(1), (D, 1))
+        self.assertEqual(d.goo(1), (D, 1))
+        self.assertEqual(d.foo(1), (d, 1))
+        self.assertEqual(D.foo(d, 1), (d, 1))
+        class E: # *not* subclassing from C
+            foo = C.foo
+        self.assertEqual(E().foo, C.foo) # i.e., unbound
+        self.assert_(repr(C.foo.__get__(C())).startswith("<bound method "))
+
+    def test_compattr(self):
+        # Testing computed attributes...
+        class C(object):
+            class computed_attribute(object):
+                def __init__(self, get, set=None, delete=None):
+                    self.__get = get
+                    self.__set = set
+                    self.__delete = delete
+                def __get__(self, obj, type=None):
+                    return self.__get(obj)
+                def __set__(self, obj, value):
+                    return self.__set(obj, value)
+                def __delete__(self, obj):
+                    return self.__delete(obj)
+            def __init__(self):
+                self.__x = 0
+            def __get_x(self):
+                x = self.__x
+                self.__x = x+1
+                return x
+            def __set_x(self, x):
+                self.__x = x
+            def __delete_x(self):
+                del self.__x
+            x = computed_attribute(__get_x, __set_x, __delete_x)
+        a = C()
+        self.assertEqual(a.x, 0)
+        self.assertEqual(a.x, 1)
+        a.x = 10
+        self.assertEqual(a.x, 10)
+        self.assertEqual(a.x, 11)
+        del a.x
+        self.assertEqual(hasattr(a, 'x'), 0)
+
+    def test_newslots(self):
+        # Testing __new__ slot override...
+        class C(list):
+            def __new__(cls):
+                self = list.__new__(cls)
+                self.foo = 1
+                return self
+            def __init__(self):
+                self.foo = self.foo + 2
+        a = C()
+        self.assertEqual(a.foo, 3)
+        self.assertEqual(a.__class__, C)
+        class D(C):
+            pass
+        b = D()
+        self.assertEqual(b.foo, 3)
+        self.assertEqual(b.__class__, D)
+
+    def test_altmro(self):
+        # Testing mro() and overriding it...
+        class A(object):
+            def f(self): return "A"
+        class B(A):
+            pass
+        class C(A):
+            def f(self): return "C"
+        class D(B, C):
+            pass
+        self.assertEqual(D.mro(), [D, B, C, A, object])
+        self.assertEqual(D.__mro__, (D, B, C, A, object))
+        self.assertEqual(D().f(), "C")
+
+        class PerverseMetaType(type):
+            def mro(cls):
+                L = type.mro(cls)
+                L.reverse()
+                return L
+        class X(D,B,C,A):
+            __metaclass__ = PerverseMetaType
+        self.assertEqual(X.__mro__, (object, A, C, B, D, X))
+        self.assertEqual(X().f(), "A")
+
+        try:
+            class X(object):
+                class __metaclass__(type):
+                    def mro(self):
+                        return [self, dict, object]
+        except TypeError:
+            pass
+        else:
+            self.fail("devious mro() return not caught")
+
+        try:
+            class X(object):
+                class __metaclass__(type):
+                    def mro(self):
+                        return [1]
+        except TypeError:
+            pass
+        else:
+            self.fail("non-class mro() return not caught")
+
+        try:
+            class X(object):
+                class __metaclass__(type):
+                    def mro(self):
+                        return 1
+        except TypeError:
+            pass
+        else:
+            self.fail("non-sequence mro() return not caught")
+
+    def test_overloading(self):
+        # Testing operator overloading...
+
+        class B(object):
+            "Intermediate class because object doesn't have a __setattr__"
+
+        class C(B):
+            def __getattr__(self, name):
+                if name == "foo":
+                    return ("getattr", name)
+                else:
+                    raise AttributeError
+            def __setattr__(self, name, value):
+                if name == "foo":
+                    self.setattr = (name, value)
+                else:
+                    return B.__setattr__(self, name, value)
+            def __delattr__(self, name):
+                if name == "foo":
+                    self.delattr = name
+                else:
+                    return B.__delattr__(self, name)
+
+            def __getitem__(self, key):
+                return ("getitem", key)
+            def __setitem__(self, key, value):
+                self.setitem = (key, value)
+            def __delitem__(self, key):
+                self.delitem = key
+
+            def __getslice__(self, i, j):
+                return ("getslice", i, j)
+            def __setslice__(self, i, j, value):
+                self.setslice = (i, j, value)
+            def __delslice__(self, i, j):
+                self.delslice = (i, j)
+
+        a = C()
+        self.assertEqual(a.foo, ("getattr", "foo"))
+        a.foo = 12
+        self.assertEqual(a.setattr, ("foo", 12))
+        del a.foo
+        self.assertEqual(a.delattr, "foo")
+
+        self.assertEqual(a[12], ("getitem", 12))
+        a[12] = 21
+        self.assertEqual(a.setitem, (12, 21))
+        del a[12]
+        self.assertEqual(a.delitem, 12)
+
+        self.assertEqual(a[0:10], ("getslice", 0, 10))
+        a[0:10] = "foo"
+        self.assertEqual(a.setslice, (0, 10, "foo"))
+        del a[0:10]
+        self.assertEqual(a.delslice, (0, 10))
+
+    def test_methods(self):
+        # Testing methods...
+        class C(object):
+            def __init__(self, x):
+                self.x = x
+            def foo(self):
+                return self.x
+        c1 = C(1)
+        self.assertEqual(c1.foo(), 1)
+        class D(C):
+            boo = C.foo
+            goo = c1.foo
+        d2 = D(2)
+        self.assertEqual(d2.foo(), 2)
+        self.assertEqual(d2.boo(), 2)
+        self.assertEqual(d2.goo(), 1)
+        class E(object):
+            foo = C.foo
+        self.assertEqual(E().foo, C.foo) # i.e., unbound
+        self.assert_(repr(C.foo.__get__(C(1))).startswith("<bound method "))
+
+    def test_specials(self):
+        # Testing special operators...
+        # Test operators like __hash__ for which a built-in default exists
+
+        # Test the default behavior for static classes
+        class C(object):
+            def __getitem__(self, i):
+                if 0 <= i < 10: return i
+                raise IndexError
+        c1 = C()
+        c2 = C()
+        self.assert_(not not c1) # What?
+        self.assertNotEqual(id(c1), id(c2))
+        hash(c1)
+        hash(c2)
+        self.assertEqual(cmp(c1, c2), cmp(id(c1), id(c2)))
+        self.assertEqual(c1, c1)
+        self.assert_(c1 != c2)
+        self.assert_(not c1 != c1)
+        self.assert_(not c1 == c2)
+        # Note that the module name appears in str/repr, and that varies
+        # depending on whether this test is run standalone or from a framework.
+        self.assert_(str(c1).find('C object at ') >= 0)
+        self.assertEqual(str(c1), repr(c1))
+        self.assert_(-1 not in c1)
+        for i in range(10):
+            self.assert_(i in c1)
+        self.assertFalse(10 in c1)
+        # Test the default behavior for dynamic classes
+        class D(object):
+            def __getitem__(self, i):
+                if 0 <= i < 10: return i
+                raise IndexError
+        d1 = D()
+        d2 = D()
+        self.assert_(not not d1)
+        self.assertNotEqual(id(d1), id(d2))
+        hash(d1)
+        hash(d2)
+        self.assertEqual(cmp(d1, d2), cmp(id(d1), id(d2)))
+        self.assertEqual(d1, d1)
+        self.assertNotEqual(d1, d2)
+        self.assert_(not d1 != d1)
+        self.assert_(not d1 == d2)
+        # Note that the module name appears in str/repr, and that varies
+        # depending on whether this test is run standalone or from a framework.
+        self.assert_(str(d1).find('D object at ') >= 0)
+        self.assertEqual(str(d1), repr(d1))
+        self.assert_(-1 not in d1)
+        for i in range(10):
+            self.assert_(i in d1)
+        self.assertFalse(10 in d1)
+        # Test overridden behavior for static classes
+        class Proxy(object):
+            def __init__(self, x):
+                self.x = x
+            def __nonzero__(self):
+                return not not self.x
+            def __hash__(self):
+                return hash(self.x)
+            def __eq__(self, other):
+                return self.x == other
+            def __ne__(self, other):
+                return self.x != other
+            def __cmp__(self, other):
+                return cmp(self.x, other.x)
+            def __str__(self):
+                return "Proxy:%s" % self.x
+            def __repr__(self):
+                return "Proxy(%r)" % self.x
+            def __contains__(self, value):
+                return value in self.x
+        p0 = Proxy(0)
+        p1 = Proxy(1)
+        p_1 = Proxy(-1)
+        self.assertFalse(p0)
+        self.assert_(not not p1)
+        self.assertEqual(hash(p0), hash(0))
+        self.assertEqual(p0, p0)
+        self.assertNotEqual(p0, p1)
+        self.assert_(not p0 != p0)
+        self.assertEqual(not p0, p1)
+        self.assertEqual(cmp(p0, p1), -1)
+        self.assertEqual(cmp(p0, p0), 0)
+        self.assertEqual(cmp(p0, p_1), 1)
+        self.assertEqual(str(p0), "Proxy:0")
+        self.assertEqual(repr(p0), "Proxy(0)")
+        p10 = Proxy(range(10))
+        self.assertFalse(-1 in p10)
+        for i in range(10):
+            self.assert_(i in p10)
+        self.assertFalse(10 in p10)
+        # Test overridden behavior for dynamic classes
+        class DProxy(object):
+            def __init__(self, x):
+                self.x = x
+            def __nonzero__(self):
+                return not not self.x
+            def __hash__(self):
+                return hash(self.x)
+            def __eq__(self, other):
+                return self.x == other
+            def __ne__(self, other):
+                return self.x != other
+            def __cmp__(self, other):
+                return cmp(self.x, other.x)
+            def __str__(self):
+                return "DProxy:%s" % self.x
+            def __repr__(self):
+                return "DProxy(%r)" % self.x
+            def __contains__(self, value):
+                return value in self.x
+        p0 = DProxy(0)
+        p1 = DProxy(1)
+        p_1 = DProxy(-1)
+        self.assertFalse(p0)
+        self.assert_(not not p1)
+        self.assertEqual(hash(p0), hash(0))
+        self.assertEqual(p0, p0)
+        self.assertNotEqual(p0, p1)
+        self.assertNotEqual(not p0, p0)
+        self.assertEqual(not p0, p1)
+        self.assertEqual(cmp(p0, p1), -1)
+        self.assertEqual(cmp(p0, p0), 0)
+        self.assertEqual(cmp(p0, p_1), 1)
+        self.assertEqual(str(p0), "DProxy:0")
+        self.assertEqual(repr(p0), "DProxy(0)")
+        p10 = DProxy(range(10))
+        self.assertFalse(-1 in p10)
+        for i in range(10):
+            self.assert_(i in p10)
+        self.assertFalse(10 in p10)
+
+        # Safety test for __cmp__
+        def unsafecmp(a, b):
+            try:
+                a.__class__.__cmp__(a, b)
+            except TypeError:
+                pass
             else:
-                return I(pow(int(self), int(other), int(mod)))
-        def __rpow__(self, other, mod=None):
-            if mod is None:
-                return I(pow(int(other), int(self), mod))
+                self.fail("shouldn't allow %s.__cmp__(%r, %r)" % (
+                    a.__class__, a, b))
+
+        unsafecmp(u"123", "123")
+        unsafecmp("123", u"123")
+        unsafecmp(1, 1.0)
+        unsafecmp(1.0, 1)
+        unsafecmp(1, 1L)
+        unsafecmp(1L, 1)
+
+    def test_recursions(self):
+        # Testing recursion checks ...
+        class Letter(str):
+            def __new__(cls, letter):
+                if letter == 'EPS':
+                    return str.__new__(cls)
+                return str.__new__(cls, letter)
+            def __str__(self):
+                if not self:
+                    return 'EPS'
+                return self
+        # sys.stdout needs to be the original to trigger the recursion bug
+        import sys
+        test_stdout = sys.stdout
+        sys.stdout = test_support.get_original_stdout()
+        try:
+            # nothing should actually be printed, this should raise an exception
+            print Letter('w')
+        except RuntimeError:
+            pass
+        else:
+            self.fail("expected a RuntimeError for print recursion")
+        finally:
+            sys.stdout = test_stdout
+
+        # Bug #1202533.
+        class A(object):
+            pass
+        A.__mul__ = types.MethodType(lambda self, x: self * x, None, A)
+        try:
+            A()*2
+        except RuntimeError:
+            pass
+        else:
+            self.fail("expected a RuntimeError")
+
+    def test_weakrefs(self):
+        # Testing weak references...
+        import weakref
+        class C(object):
+            pass
+        c = C()
+        r = weakref.ref(c)
+        self.assertEqual(r(), c)
+        del c
+        self.assertEqual(r(), None)
+        del r
+        class NoWeak(object):
+            __slots__ = ['foo']
+        no = NoWeak()
+        try:
+            weakref.ref(no)
+        except TypeError, msg:
+            self.assert_(str(msg).find("weak reference") >= 0)
+        else:
+            self.fail("weakref.ref(no) should be illegal")
+        class Weak(object):
+            __slots__ = ['foo', '__weakref__']
+        yes = Weak()
+        r = weakref.ref(yes)
+        self.assertEqual(r(), yes)
+        del yes
+        self.assertEqual(r(), None)
+        del r
+
+    def test_properties(self):
+        # Testing property...
+        class C(object):
+            def getx(self):
+                return self.__x
+            def setx(self, value):
+                self.__x = value
+            def delx(self):
+                del self.__x
+            x = property(getx, setx, delx, doc="I'm the x property.")
+        a = C()
+        self.assertFalse(hasattr(a, "x"))
+        a.x = 42
+        self.assertEqual(a._C__x, 42)
+        self.assertEqual(a.x, 42)
+        del a.x
+        self.assertFalse(hasattr(a, "x"))
+        self.assertFalse(hasattr(a, "_C__x"))
+        C.x.__set__(a, 100)
+        self.assertEqual(C.x.__get__(a), 100)
+        C.x.__delete__(a)
+        self.assertFalse(hasattr(a, "x"))
+
+        raw = C.__dict__['x']
+        self.assert_(isinstance(raw, property))
+
+        attrs = dir(raw)
+        self.assert_("__doc__" in attrs)
+        self.assert_("fget" in attrs)
+        self.assert_("fset" in attrs)
+        self.assert_("fdel" in attrs)
+
+        self.assertEqual(raw.__doc__, "I'm the x property.")
+        self.assert_(raw.fget is C.__dict__['getx'])
+        self.assert_(raw.fset is C.__dict__['setx'])
+        self.assert_(raw.fdel is C.__dict__['delx'])
+
+        for attr in "__doc__", "fget", "fset", "fdel":
+            try:
+                setattr(raw, attr, 42)
+            except TypeError, msg:
+                if str(msg).find('readonly') < 0:
+                    self.fail("when setting readonly attr %r on a property, "
+                                     "got unexpected TypeError msg %r" % (attr, str(msg)))
             else:
-                return I(pow(int(other), int(self), int(mod)))
+                self.fail("expected TypeError from trying to set readonly %r "
+                                 "attr on a property" % attr)
 
-    vereq(repr(I(1) + I(2)), "I(3)")
-    vereq(repr(I(1) + 2), "I(3)")
-    vereq(repr(1 + I(2)), "I(3)")
-    vereq(repr(I(2) ** I(3)), "I(8)")
-    vereq(repr(2 ** I(3)), "I(8)")
-    vereq(repr(I(2) ** 3), "I(8)")
-    vereq(repr(pow(I(2), I(3), I(5))), "I(3)")
-    class S(str):
-        def __eq__(self, other):
-            return self.lower() == other.lower()
+        class D(object):
+            __getitem__ = property(lambda s: 1/0)
 
-def subclasspropagation():
-    if verbose: print "Testing propagation of slot functions to subclasses..."
-    class A(object):
-        pass
-    class B(A):
-        pass
-    class C(A):
-        pass
-    class D(B, C):
-        pass
-    d = D()
-    orig_hash = hash(d) # related to id(d) in platform-dependent ways
-    A.__hash__ = lambda self: 42
-    vereq(hash(d), 42)
-    C.__hash__ = lambda self: 314
-    vereq(hash(d), 314)
-    B.__hash__ = lambda self: 144
-    vereq(hash(d), 144)
-    D.__hash__ = lambda self: 100
-    vereq(hash(d), 100)
-    del D.__hash__
-    vereq(hash(d), 144)
-    del B.__hash__
-    vereq(hash(d), 314)
-    del C.__hash__
-    vereq(hash(d), 42)
-    del A.__hash__
-    vereq(hash(d), orig_hash)
-    d.foo = 42
-    d.bar = 42
-    vereq(d.foo, 42)
-    vereq(d.bar, 42)
-    def __getattribute__(self, name):
-        if name == "foo":
-            return 24
-        return object.__getattribute__(self, name)
-    A.__getattribute__ = __getattribute__
-    vereq(d.foo, 24)
-    vereq(d.bar, 42)
-    def __getattr__(self, name):
-        if name in ("spam", "foo", "bar"):
-            return "hello"
-        raise AttributeError, name
-    B.__getattr__ = __getattr__
-    vereq(d.spam, "hello")
-    vereq(d.foo, 24)
-    vereq(d.bar, 42)
-    del A.__getattribute__
-    vereq(d.foo, 42)
-    del d.foo
-    vereq(d.foo, "hello")
-    vereq(d.bar, 42)
-    del B.__getattr__
-    try:
-        d.foo
-    except AttributeError:
-        pass
-    else:
-        raise TestFailed, "d.foo should be undefined now"
-
-    # Test a nasty bug in recurse_down_subclasses()
-    import gc
-    class A(object):
-        pass
-    class B(A):
-        pass
-    del B
-    gc.collect()
-    A.__setitem__ = lambda *a: None # crash
-
-def buffer_inherit():
-    import binascii
-    # SF bug [#470040] ParseTuple t# vs subclasses.
-    if verbose:
-        print "Testing that buffer interface is inherited ..."
-
-    class MyStr(str):
-        pass
-    base = 'abc'
-    m = MyStr(base)
-    # b2a_hex uses the buffer interface to get its argument's value, via
-    # PyArg_ParseTuple 't#' code.
-    vereq(binascii.b2a_hex(m), binascii.b2a_hex(base))
-
-    # It's not clear that unicode will continue to support the character
-    # buffer interface, and this test will fail if that's taken away.
-    class MyUni(unicode):
-        pass
-    base = u'abc'
-    m = MyUni(base)
-    vereq(binascii.b2a_hex(m), binascii.b2a_hex(base))
-
-    class MyInt(int):
-        pass
-    m = MyInt(42)
-    try:
-        binascii.b2a_hex(m)
-        raise TestFailed('subclass of int should not have a buffer interface')
-    except TypeError:
-        pass
-
-def str_of_str_subclass():
-    import binascii
-    import cStringIO
-
-    if verbose:
-        print "Testing __str__ defined in subclass of str ..."
-
-    class octetstring(str):
-        def __str__(self):
-            return binascii.b2a_hex(self)
-        def __repr__(self):
-            return self + " repr"
-
-    o = octetstring('A')
-    vereq(type(o), octetstring)
-    vereq(type(str(o)), str)
-    vereq(type(repr(o)), str)
-    vereq(ord(o), 0x41)
-    vereq(str(o), '41')
-    vereq(repr(o), 'A repr')
-    vereq(o.__str__(), '41')
-    vereq(o.__repr__(), 'A repr')
-
-    capture = cStringIO.StringIO()
-    # Calling str() or not exercises different internal paths.
-    print >> capture, o
-    print >> capture, str(o)
-    vereq(capture.getvalue(), '41\n41\n')
-    capture.close()
-
-def kwdargs():
-    if verbose: print "Testing keyword arguments to __init__, __call__..."
-    def f(a): return a
-    vereq(f.__call__(a=42), 42)
-    a = []
-    list.__init__(a, sequence=[0, 1, 2])
-    vereq(a, [0, 1, 2])
-
-def recursive__call__():
-    if verbose: print ("Testing recursive __call__() by setting to instance of "
-                        "class ...")
-    class A(object):
-        pass
-
-    A.__call__ = A()
-    try:
-        A()()
-    except RuntimeError:
-        pass
-    else:
-        raise TestFailed("Recursion limit should have been reached for "
-                         "__call__()")
-
-def delhook():
-    if verbose: print "Testing __del__ hook..."
-    log = []
-    class C(object):
-        def __del__(self):
-            log.append(1)
-    c = C()
-    vereq(log, [])
-    del c
-    vereq(log, [1])
-
-    class D(object): pass
-    d = D()
-    try: del d[0]
-    except TypeError: pass
-    else: raise TestFailed, "invalid del() didn't raise TypeError"
-
-def hashinherit():
-    if verbose: print "Testing hash of mutable subclasses..."
-
-    class mydict(dict):
-        pass
-    d = mydict()
-    try:
-        hash(d)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "hash() of dict subclass should fail"
-
-    class mylist(list):
-        pass
-    d = mylist()
-    try:
-        hash(d)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "hash() of list subclass should fail"
-
-def strops():
-    try: 'a' + 5
-    except TypeError: pass
-    else: raise TestFailed, "'' + 5 doesn't raise TypeError"
-
-    try: ''.split('')
-    except ValueError: pass
-    else: raise TestFailed, "''.split('') doesn't raise ValueError"
-
-    try: ''.join([0])
-    except TypeError: pass
-    else: raise TestFailed, "''.join([0]) doesn't raise TypeError"
-
-    try: ''.rindex('5')
-    except ValueError: pass
-    else: raise TestFailed, "''.rindex('5') doesn't raise ValueError"
-
-    try: '%(n)s' % None
-    except TypeError: pass
-    else: raise TestFailed, "'%(n)s' % None doesn't raise TypeError"
-
-    try: '%(n' % {}
-    except ValueError: pass
-    else: raise TestFailed, "'%(n' % {} '' doesn't raise ValueError"
-
-    try: '%*s' % ('abc')
-    except TypeError: pass
-    else: raise TestFailed, "'%*s' % ('abc') doesn't raise TypeError"
-
-    try: '%*.*s' % ('abc', 5)
-    except TypeError: pass
-    else: raise TestFailed, "'%*.*s' % ('abc', 5) doesn't raise TypeError"
-
-    try: '%s' % (1, 2)
-    except TypeError: pass
-    else: raise TestFailed, "'%s' % (1, 2) doesn't raise TypeError"
-
-    try: '%' % None
-    except ValueError: pass
-    else: raise TestFailed, "'%' % None doesn't raise ValueError"
-
-    vereq('534253'.isdigit(), 1)
-    vereq('534253x'.isdigit(), 0)
-    vereq('%c' % 5, '\x05')
-    vereq('%c' % '5', '5')
-
-def deepcopyrecursive():
-    if verbose: print "Testing deepcopy of recursive objects..."
-    class Node:
-        pass
-    a = Node()
-    b = Node()
-    a.b = b
-    b.a = a
-    z = deepcopy(a) # This blew up before
-
-def modules():
-    if verbose: print "Testing uninitialized module objects..."
-    from types import ModuleType as M
-    m = M.__new__(M)
-    str(m)
-    vereq(hasattr(m, "__name__"), 0)
-    vereq(hasattr(m, "__file__"), 0)
-    vereq(hasattr(m, "foo"), 0)
-    vereq(m.__dict__, None)
-    m.foo = 1
-    vereq(m.__dict__, {"foo": 1})
-
-def dictproxyiterkeys():
-    class C(object):
-        def meth(self):
+        d = D()
+        try:
+            for i in d:
+                str(i)
+        except ZeroDivisionError:
             pass
-    if verbose: print "Testing dict-proxy iterkeys..."
-    keys = [ key for key in C.__dict__.iterkeys() ]
-    keys.sort()
-    vereq(keys, ['__dict__', '__doc__', '__module__', '__weakref__', 'meth'])
+        else:
+            self.fail("expected ZeroDivisionError from bad property")
 
-def dictproxyitervalues():
-    class C(object):
-        def meth(self):
+        class E(object):
+            def getter(self):
+                "getter method"
+                return 0
+            def setter(self_, value):
+                "setter method"
+                pass
+            prop = property(getter)
+            self.assertEqual(prop.__doc__, "getter method")
+            prop2 = property(fset=setter)
+            self.assertEqual(prop2.__doc__, None)
+
+        # this segfaulted in 2.5b2
+        try:
+            import _testcapi
+        except ImportError:
             pass
-    if verbose: print "Testing dict-proxy itervalues..."
-    values = [ values for values in C.__dict__.itervalues() ]
-    vereq(len(values), 5)
+        else:
+            class X(object):
+                p = property(_testcapi.test_with_docstring)
 
-def dictproxyiteritems():
-    class C(object):
-        def meth(self):
-            pass
-    if verbose: print "Testing dict-proxy iteritems..."
-    keys = [ key for (key, value) in C.__dict__.iteritems() ]
-    keys.sort()
-    vereq(keys, ['__dict__', '__doc__', '__module__', '__weakref__', 'meth'])
+    def test_properties_plus(self):
+        class C(object):
+            foo = property(doc="hello")
+            @foo.getter
+            def foo(self):
+                return self._foo
+            @foo.setter
+            def foo(self, value):
+                self._foo = abs(value)
+            @foo.deleter
+            def foo(self):
+                del self._foo
+        c = C()
+        self.assertEqual(C.foo.__doc__, "hello")
+        self.assertFalse(hasattr(c, "foo"))
+        c.foo = -42
+        self.assert_(hasattr(c, '_foo'))
+        self.assertEqual(c._foo, 42)
+        self.assertEqual(c.foo, 42)
+        del c.foo
+        self.assertFalse(hasattr(c, '_foo'))
+        self.assertFalse(hasattr(c, "foo"))
 
-def funnynew():
-    if verbose: print "Testing __new__ returning something unexpected..."
-    class C(object):
-        def __new__(cls, arg):
-            if isinstance(arg, str): return [1, 2, 3]
-            elif isinstance(arg, int): return object.__new__(D)
-            else: return object.__new__(cls)
-    class D(C):
-        def __init__(self, arg):
-            self.foo = arg
-    vereq(C("1"), [1, 2, 3])
-    vereq(D("1"), [1, 2, 3])
-    d = D(None)
-    veris(d.foo, None)
-    d = C(1)
-    vereq(isinstance(d, D), True)
-    vereq(d.foo, 1)
-    d = D(1)
-    vereq(isinstance(d, D), True)
-    vereq(d.foo, 1)
+        class D(C):
+            @C.foo.deleter
+            def foo(self):
+                try:
+                    del self._foo
+                except AttributeError:
+                    pass
+        d = D()
+        d.foo = 24
+        self.assertEqual(d.foo, 24)
+        del d.foo
+        del d.foo
 
-def imulbug():
-    # SF bug 544647
-    if verbose: print "Testing for __imul__ problems..."
-    class C(object):
-        def __imul__(self, other):
-            return (self, other)
-    x = C()
-    y = x
-    y *= 1.0
-    vereq(y, (x, 1.0))
-    y = x
-    y *= 2
-    vereq(y, (x, 2))
-    y = x
-    y *= 3L
-    vereq(y, (x, 3L))
-    y = x
-    y *= 1L<<100
-    vereq(y, (x, 1L<<100))
-    y = x
-    y *= None
-    vereq(y, (x, None))
-    y = x
-    y *= "foo"
-    vereq(y, (x, "foo"))
+        class E(object):
+            @property
+            def foo(self):
+                return self._foo
+            @foo.setter
+            def foo(self, value):
+                raise RuntimeError
+            @foo.setter
+            def foo(self, value):
+                self._foo = abs(value)
+            @foo.deleter
+            def foo(self, value=None):
+                del self._foo
 
-def docdescriptor():
-    # SF bug 542984
-    if verbose: print "Testing __doc__ descriptor..."
-    class DocDescr(object):
-        def __get__(self, object, otype):
-            if object:
-                object = object.__class__.__name__ + ' instance'
-            if otype:
-                otype = otype.__name__
-            return 'object=%s; type=%s' % (object, otype)
-    class OldClass:
-        __doc__ = DocDescr()
-    class NewClass(object):
-        __doc__ = DocDescr()
-    vereq(OldClass.__doc__, 'object=None; type=OldClass')
-    vereq(OldClass().__doc__, 'object=OldClass instance; type=OldClass')
-    vereq(NewClass.__doc__, 'object=None; type=NewClass')
-    vereq(NewClass().__doc__, 'object=NewClass instance; type=NewClass')
+        e = E()
+        e.foo = -42
+        self.assertEqual(e.foo, 42)
+        del e.foo
 
-def copy_setstate():
-    if verbose:
-        print "Testing that copy.*copy() correctly uses __setstate__..."
-    import copy
-    class C(object):
-        def __init__(self, foo=None):
-            self.foo = foo
-            self.__foo = foo
-        def setfoo(self, foo=None):
-            self.foo = foo
-        def getfoo(self):
-            return self.__foo
-        def __getstate__(self):
-            return [self.foo]
-        def __setstate__(self, lst):
-            assert len(lst) == 1
-            self.__foo = self.foo = lst[0]
-    a = C(42)
-    a.setfoo(24)
-    vereq(a.foo, 24)
-    vereq(a.getfoo(), 42)
-    b = copy.copy(a)
-    vereq(b.foo, 24)
-    vereq(b.getfoo(), 24)
-    b = copy.deepcopy(a)
-    vereq(b.foo, 24)
-    vereq(b.getfoo(), 24)
+        class F(E):
+            @E.foo.deleter
+            def foo(self):
+                del self._foo
+            @foo.setter
+            def foo(self, value):
+                self._foo = max(0, value)
+        f = F()
+        f.foo = -10
+        self.assertEqual(f.foo, 0)
+        del f.foo
 
-def slices():
-    if verbose:
-        print "Testing cases with slices and overridden __getitem__ ..."
-    # Strings
-    vereq("hello"[:4], "hell")
-    vereq("hello"[slice(4)], "hell")
-    vereq(str.__getitem__("hello", slice(4)), "hell")
-    class S(str):
-        def __getitem__(self, x):
-            return str.__getitem__(self, x)
-    vereq(S("hello")[:4], "hell")
-    vereq(S("hello")[slice(4)], "hell")
-    vereq(S("hello").__getitem__(slice(4)), "hell")
-    # Tuples
-    vereq((1,2,3)[:2], (1,2))
-    vereq((1,2,3)[slice(2)], (1,2))
-    vereq(tuple.__getitem__((1,2,3), slice(2)), (1,2))
-    class T(tuple):
-        def __getitem__(self, x):
-            return tuple.__getitem__(self, x)
-    vereq(T((1,2,3))[:2], (1,2))
-    vereq(T((1,2,3))[slice(2)], (1,2))
-    vereq(T((1,2,3)).__getitem__(slice(2)), (1,2))
-    # Lists
-    vereq([1,2,3][:2], [1,2])
-    vereq([1,2,3][slice(2)], [1,2])
-    vereq(list.__getitem__([1,2,3], slice(2)), [1,2])
-    class L(list):
-        def __getitem__(self, x):
-            return list.__getitem__(self, x)
-    vereq(L([1,2,3])[:2], [1,2])
-    vereq(L([1,2,3])[slice(2)], [1,2])
-    vereq(L([1,2,3]).__getitem__(slice(2)), [1,2])
-    # Now do lists and __setitem__
-    a = L([1,2,3])
-    a[slice(1, 3)] = [3,2]
-    vereq(a, [1,3,2])
-    a[slice(0, 2, 1)] = [3,1]
-    vereq(a, [3,1,2])
-    a.__setitem__(slice(1, 3), [2,1])
-    vereq(a, [3,2,1])
-    a.__setitem__(slice(0, 2, 1), [2,3])
-    vereq(a, [2,3,1])
+    def test_dict_constructors(self):
+        # Testing dict constructor ...
+        d = dict()
+        self.assertEqual(d, {})
+        d = dict({})
+        self.assertEqual(d, {})
+        d = dict({1: 2, 'a': 'b'})
+        self.assertEqual(d, {1: 2, 'a': 'b'})
+        self.assertEqual(d, dict(d.items()))
+        self.assertEqual(d, dict(d.iteritems()))
+        d = dict({'one':1, 'two':2})
+        self.assertEqual(d, dict(one=1, two=2))
+        self.assertEqual(d, dict(**d))
+        self.assertEqual(d, dict({"one": 1}, two=2))
+        self.assertEqual(d, dict([("two", 2)], one=1))
+        self.assertEqual(d, dict([("one", 100), ("two", 200)], **d))
+        self.assertEqual(d, dict(**d))
 
-def subtype_resurrection():
-    if verbose:
-        print "Testing resurrection of new-style instance..."
-
-    class C(object):
-        container = []
-
-        def __del__(self):
-            # resurrect the instance
-            C.container.append(self)
-
-    c = C()
-    c.attr = 42
-    # The most interesting thing here is whether this blows up, due to flawed
-    #  GC tracking logic in typeobject.c's call_finalizer() (a 2.2.1 bug).
-    del c
-
-    # If that didn't blow up, it's also interesting to see whether clearing
-    # the last container slot works:  that will attempt to delete c again,
-    # which will cause c to get appended back to the container again "during"
-    # the del.
-    del C.container[-1]
-    vereq(len(C.container), 1)
-    vereq(C.container[-1].attr, 42)
-
-    # Make c mortal again, so that the test framework with -l doesn't report
-    # it as a leak.
-    del C.__del__
-
-def slottrash():
-    # Deallocating deeply nested slotted trash caused stack overflows
-    if verbose:
-        print "Testing slot trash..."
-    class trash(object):
-        __slots__ = ['x']
-        def __init__(self, x):
-            self.x = x
-    o = None
-    for i in xrange(50000):
-        o = trash(o)
-    del o
-
-def slotmultipleinheritance():
-    # SF bug 575229, multiple inheritance w/ slots dumps core
-    class A(object):
-        __slots__=()
-    class B(object):
-        pass
-    class C(A,B) :
-        __slots__=()
-    vereq(C.__basicsize__, B.__basicsize__)
-    verify(hasattr(C, '__dict__'))
-    verify(hasattr(C, '__weakref__'))
-    C().x = 2
-
-def testrmul():
-    # SF patch 592646
-    if verbose:
-        print "Testing correct invocation of __rmul__..."
-    class C(object):
-        def __mul__(self, other):
-            return "mul"
-        def __rmul__(self, other):
-            return "rmul"
-    a = C()
-    vereq(a*2, "mul")
-    vereq(a*2.2, "mul")
-    vereq(2*a, "rmul")
-    vereq(2.2*a, "rmul")
-
-def testipow():
-    # [SF bug 620179]
-    if verbose:
-        print "Testing correct invocation of __ipow__..."
-    class C(object):
-        def __ipow__(self, other):
-            pass
-    a = C()
-    a **= 2
-
-def do_this_first():
-    if verbose:
-        print "Testing SF bug 551412 ..."
-    # This dumps core when SF bug 551412 isn't fixed --
-    # but only when test_descr.py is run separately.
-    # (That can't be helped -- as soon as PyType_Ready()
-    # is called for PyLong_Type, the bug is gone.)
-    class UserLong(object):
-        def __pow__(self, *args):
-            pass
-    try:
-        pow(0L, UserLong(), 0L)
-    except:
-        pass
-
-    if verbose:
-        print "Testing SF bug 570483..."
-    # Another segfault only when run early
-    # (before PyType_Ready(tuple) is called)
-    type.mro(tuple)
-
-def test_mutable_bases():
-    if verbose:
-        print "Testing mutable bases..."
-    # stuff that should work:
-    class C(object):
-        pass
-    class C2(object):
-        def __getattribute__(self, attr):
-            if attr == 'a':
-                return 2
+        for badarg in 0, 0L, 0j, "0", [0], (0,):
+            try:
+                dict(badarg)
+            except TypeError:
+                pass
+            except ValueError:
+                if badarg == "0":
+                    # It's a sequence, and its elements are also sequences (gotta
+                    # love strings <wink>), but they aren't of length 2, so this
+                    # one seemed better as a ValueError than a TypeError.
+                    pass
+                else:
+                    self.fail("no TypeError from dict(%r)" % badarg)
             else:
-                return super(C2, self).__getattribute__(attr)
-        def meth(self):
-            return 1
-    class D(C):
-        pass
-    class E(D):
-        pass
-    d = D()
-    e = E()
-    D.__bases__ = (C,)
-    D.__bases__ = (C2,)
-    vereq(d.meth(), 1)
-    vereq(e.meth(), 1)
-    vereq(d.a, 2)
-    vereq(e.a, 2)
-    vereq(C2.__subclasses__(), [D])
+                self.fail("no TypeError from dict(%r)" % badarg)
 
-    # stuff that shouldn't:
-    class L(list):
-        pass
+        try:
+            dict({}, {})
+        except TypeError:
+            pass
+        else:
+            self.fail("no TypeError from dict({}, {})")
 
-    try:
-        L.__bases__ = (dict,)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "shouldn't turn list subclass into dict subclass"
+        class Mapping:
+            # Lacks a .keys() method; will be added later.
+            dict = {1:2, 3:4, 'a':1j}
 
-    try:
-        list.__bases__ = (dict,)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "shouldn't be able to assign to list.__bases__"
+        try:
+            dict(Mapping())
+        except TypeError:
+            pass
+        else:
+            self.fail("no TypeError from dict(incomplete mapping)")
 
-    try:
-        D.__bases__ = (C2, list)
-    except TypeError:
-        pass
-    else:
-        assert 0, "best_base calculation found wanting"
+        Mapping.keys = lambda self: self.dict.keys()
+        Mapping.__getitem__ = lambda self, i: self.dict[i]
+        d = dict(Mapping())
+        self.assertEqual(d, Mapping.dict)
 
-    try:
-        del D.__bases__
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "shouldn't be able to delete .__bases__"
+        # Init from sequence of iterable objects, each producing a 2-sequence.
+        class AddressBookEntry:
+            def __init__(self, first, last):
+                self.first = first
+                self.last = last
+            def __iter__(self):
+                return iter([self.first, self.last])
 
-    try:
-        D.__bases__ = ()
-    except TypeError, msg:
-        if str(msg) == "a new-style class can't have only classic bases":
-            raise TestFailed, "wrong error message for .__bases__ = ()"
-    else:
-        raise TestFailed, "shouldn't be able to set .__bases__ to ()"
+        d = dict([AddressBookEntry('Tim', 'Warsaw'),
+                  AddressBookEntry('Barry', 'Peters'),
+                  AddressBookEntry('Tim', 'Peters'),
+                  AddressBookEntry('Barry', 'Warsaw')])
+        self.assertEqual(d, {'Barry': 'Warsaw', 'Tim': 'Peters'})
 
-    try:
-        D.__bases__ = (D,)
-    except TypeError:
-        pass
-    else:
-        # actually, we'll have crashed by here...
-        raise TestFailed, "shouldn't be able to create inheritance cycles"
+        d = dict(zip(range(4), range(1, 5)))
+        self.assertEqual(d, dict([(i, i+1) for i in range(4)]))
 
-    try:
-        D.__bases__ = (C, C)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "didn't detect repeated base classes"
-
-    try:
-        D.__bases__ = (E,)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "shouldn't be able to create inheritance cycles"
-
-    # let's throw a classic class into the mix:
-    class Classic:
-        def meth2(self):
-            return 3
-
-    D.__bases__ = (C, Classic)
-
-    vereq(d.meth2(), 3)
-    vereq(e.meth2(), 3)
-    try:
-        d.a
-    except AttributeError:
-        pass
-    else:
-        raise TestFailed, "attribute should have vanished"
-
-    try:
-        D.__bases__ = (Classic,)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "new-style class must have a new-style base"
-
-def test_mutable_bases_with_failing_mro():
-    if verbose:
-        print "Testing mutable bases with failing mro..."
-    class WorkOnce(type):
-        def __new__(self, name, bases, ns):
-            self.flag = 0
-            return super(WorkOnce, self).__new__(WorkOnce, name, bases, ns)
-        def mro(self):
-            if self.flag > 0:
-                raise RuntimeError, "bozo"
+        # Bad sequence lengths.
+        for bad in [('tooshort',)], [('too', 'long', 'by 1')]:
+            try:
+                dict(bad)
+            except ValueError:
+                pass
             else:
-                self.flag += 1
+                self.fail("no ValueError from dict(%r)" % bad)
+
+    def test_dir(self):
+        # Testing dir() ...
+        junk = 12
+        self.assertEqual(dir(), ['junk', 'self'])
+        del junk
+
+        # Just make sure these don't blow up!
+        for arg in 2, 2L, 2j, 2e0, [2], "2", u"2", (2,), {2:2}, type, self.test_dir:
+            dir(arg)
+
+        # Try classic classes.
+        class C:
+            Cdata = 1
+            def Cmethod(self): pass
+
+        cstuff = ['Cdata', 'Cmethod', '__doc__', '__module__']
+        self.assertEqual(dir(C), cstuff)
+        self.assert_('im_self' in dir(C.Cmethod))
+
+        c = C()  # c.__doc__ is an odd thing to see here; ditto c.__module__.
+        self.assertEqual(dir(c), cstuff)
+
+        c.cdata = 2
+        c.cmethod = lambda self: 0
+        self.assertEqual(dir(c), cstuff + ['cdata', 'cmethod'])
+        self.assert_('im_self' in dir(c.Cmethod))
+
+        class A(C):
+            Adata = 1
+            def Amethod(self): pass
+
+        astuff = ['Adata', 'Amethod'] + cstuff
+        self.assertEqual(dir(A), astuff)
+        self.assert_('im_self' in dir(A.Amethod))
+        a = A()
+        self.assertEqual(dir(a), astuff)
+        self.assert_('im_self' in dir(a.Amethod))
+        a.adata = 42
+        a.amethod = lambda self: 3
+        self.assertEqual(dir(a), astuff + ['adata', 'amethod'])
+
+        # The same, but with new-style classes.  Since these have object as a
+        # base class, a lot more gets sucked in.
+        def interesting(strings):
+            return [s for s in strings if not s.startswith('_')]
+
+        class C(object):
+            Cdata = 1
+            def Cmethod(self): pass
+
+        cstuff = ['Cdata', 'Cmethod']
+        self.assertEqual(interesting(dir(C)), cstuff)
+
+        c = C()
+        self.assertEqual(interesting(dir(c)), cstuff)
+        self.assert_('im_self' in dir(C.Cmethod))
+
+        c.cdata = 2
+        c.cmethod = lambda self: 0
+        self.assertEqual(interesting(dir(c)), cstuff + ['cdata', 'cmethod'])
+        self.assert_('im_self' in dir(c.Cmethod))
+
+        class A(C):
+            Adata = 1
+            def Amethod(self): pass
+
+        astuff = ['Adata', 'Amethod'] + cstuff
+        self.assertEqual(interesting(dir(A)), astuff)
+        self.assert_('im_self' in dir(A.Amethod))
+        a = A()
+        self.assertEqual(interesting(dir(a)), astuff)
+        a.adata = 42
+        a.amethod = lambda self: 3
+        self.assertEqual(interesting(dir(a)), astuff + ['adata', 'amethod'])
+        self.assert_('im_self' in dir(a.Amethod))
+
+        # Try a module subclass.
+        import sys
+        class M(type(sys)):
+            pass
+        minstance = M("m")
+        minstance.b = 2
+        minstance.a = 1
+        names = [x for x in dir(minstance) if x not in ["__name__", "__doc__"]]
+        self.assertEqual(names, ['a', 'b'])
+
+        class M2(M):
+            def getdict(self):
+                return "Not a dict!"
+            __dict__ = property(getdict)
+
+        m2instance = M2("m2")
+        m2instance.b = 2
+        m2instance.a = 1
+        self.assertEqual(m2instance.__dict__, "Not a dict!")
+        try:
+            dir(m2instance)
+        except TypeError:
+            pass
+
+        # Two essentially featureless objects, just inheriting stuff from
+        # object.
+        self.assertEqual(dir(None), dir(Ellipsis))
+
+        # Nasty test case for proxied objects
+        class Wrapper(object):
+            def __init__(self, obj):
+                self.__obj = obj
+            def __repr__(self):
+                return "Wrapper(%s)" % repr(self.__obj)
+            def __getitem__(self, key):
+                return Wrapper(self.__obj[key])
+            def __len__(self):
+                return len(self.__obj)
+            def __getattr__(self, name):
+                return Wrapper(getattr(self.__obj, name))
+
+        class C(object):
+            def __getclass(self):
+                return Wrapper(type(self))
+            __class__ = property(__getclass)
+
+        dir(C()) # This used to segfault
+
+    def test_supers(self):
+        # Testing super...
+
+        class A(object):
+            def meth(self, a):
+                return "A(%r)" % a
+
+        self.assertEqual(A().meth(1), "A(1)")
+
+        class B(A):
+            def __init__(self):
+                self.__super = super(B, self)
+            def meth(self, a):
+                return "B(%r)" % a + self.__super.meth(a)
+
+        self.assertEqual(B().meth(2), "B(2)A(2)")
+
+        class C(A):
+            def meth(self, a):
+                return "C(%r)" % a + self.__super.meth(a)
+        C._C__super = super(C)
+
+        self.assertEqual(C().meth(3), "C(3)A(3)")
+
+        class D(C, B):
+            def meth(self, a):
+                return "D(%r)" % a + super(D, self).meth(a)
+
+        self.assertEqual(D().meth(4), "D(4)C(4)B(4)A(4)")
+
+        # Test for subclassing super
+
+        class mysuper(super):
+            def __init__(self, *args):
+                return super(mysuper, self).__init__(*args)
+
+        class E(D):
+            def meth(self, a):
+                return "E(%r)" % a + mysuper(E, self).meth(a)
+
+        self.assertEqual(E().meth(5), "E(5)D(5)C(5)B(5)A(5)")
+
+        class F(E):
+            def meth(self, a):
+                s = self.__super # == mysuper(F, self)
+                return "F(%r)[%s]" % (a, s.__class__.__name__) + s.meth(a)
+        F._F__super = mysuper(F)
+
+        self.assertEqual(F().meth(6), "F(6)[mysuper]E(6)D(6)C(6)B(6)A(6)")
+
+        # Make sure certain errors are raised
+
+        try:
+            super(D, 42)
+        except TypeError:
+            pass
+        else:
+            self.fail("shouldn't allow super(D, 42)")
+
+        try:
+            super(D, C())
+        except TypeError:
+            pass
+        else:
+            self.fail("shouldn't allow super(D, C())")
+
+        try:
+            super(D).__get__(12)
+        except TypeError:
+            pass
+        else:
+            self.fail("shouldn't allow super(D).__get__(12)")
+
+        try:
+            super(D).__get__(C())
+        except TypeError:
+            pass
+        else:
+            self.fail("shouldn't allow super(D).__get__(C())")
+
+        # Make sure data descriptors can be overridden and accessed via super
+        # (new feature in Python 2.3)
+
+        class DDbase(object):
+            def getx(self): return 42
+            x = property(getx)
+
+        class DDsub(DDbase):
+            def getx(self): return "hello"
+            x = property(getx)
+
+        dd = DDsub()
+        self.assertEqual(dd.x, "hello")
+        self.assertEqual(super(DDsub, dd).x, 42)
+
+        # Ensure that super() lookup of descriptor from classmethod
+        # works (SF ID# 743627)
+
+        class Base(object):
+            aProp = property(lambda self: "foo")
+
+        class Sub(Base):
+            @classmethod
+            def test(klass):
+                return super(Sub,klass).aProp
+
+        self.assertEqual(Sub.test(), Base.aProp)
+
+        # Verify that super() doesn't allow keyword args
+        try:
+            super(Base, kw=1)
+        except TypeError:
+            pass
+        else:
+            self.assertEqual("super shouldn't accept keyword args")
+
+    def test_basic_inheritance(self):
+        # Testing inheritance from basic types...
+
+        class hexint(int):
+            def __repr__(self):
+                return hex(self)
+            def __add__(self, other):
+                return hexint(int.__add__(self, other))
+            # (Note that overriding __radd__ doesn't work,
+            # because the int type gets first dibs.)
+        self.assertEqual(repr(hexint(7) + 9), "0x10")
+        self.assertEqual(repr(hexint(1000) + 7), "0x3ef")
+        a = hexint(12345)
+        self.assertEqual(a, 12345)
+        self.assertEqual(int(a), 12345)
+        self.assert_(int(a).__class__ is int)
+        self.assertEqual(hash(a), hash(12345))
+        self.assert_((+a).__class__ is int)
+        self.assert_((a >> 0).__class__ is int)
+        self.assert_((a << 0).__class__ is int)
+        self.assert_((hexint(0) << 12).__class__ is int)
+        self.assert_((hexint(0) >> 12).__class__ is int)
+
+        class octlong(long):
+            __slots__ = []
+            def __str__(self):
+                s = oct(self)
+                if s[-1] == 'L':
+                    s = s[:-1]
+                return s
+            def __add__(self, other):
+                return self.__class__(super(octlong, self).__add__(other))
+            __radd__ = __add__
+        self.assertEqual(str(octlong(3) + 5), "010")
+        # (Note that overriding __radd__ here only seems to work
+        # because the example uses a short int left argument.)
+        self.assertEqual(str(5 + octlong(3000)), "05675")
+        a = octlong(12345)
+        self.assertEqual(a, 12345L)
+        self.assertEqual(long(a), 12345L)
+        self.assertEqual(hash(a), hash(12345L))
+        self.assert_(long(a).__class__ is long)
+        self.assert_((+a).__class__ is long)
+        self.assert_((-a).__class__ is long)
+        self.assert_((-octlong(0)).__class__ is long)
+        self.assert_((a >> 0).__class__ is long)
+        self.assert_((a << 0).__class__ is long)
+        self.assert_((a - 0).__class__ is long)
+        self.assert_((a * 1).__class__ is long)
+        self.assert_((a ** 1).__class__ is long)
+        self.assert_((a // 1).__class__ is long)
+        self.assert_((1 * a).__class__ is long)
+        self.assert_((a | 0).__class__ is long)
+        self.assert_((a ^ 0).__class__ is long)
+        self.assert_((a & -1L).__class__ is long)
+        self.assert_((octlong(0) << 12).__class__ is long)
+        self.assert_((octlong(0) >> 12).__class__ is long)
+        self.assert_(abs(octlong(0)).__class__ is long)
+
+        # Because octlong overrides __add__, we can't check the absence of +0
+        # optimizations using octlong.
+        class longclone(long):
+            pass
+        a = longclone(1)
+        self.assert_((a + 0).__class__ is long)
+        self.assert_((0 + a).__class__ is long)
+
+        # Check that negative clones don't segfault
+        a = longclone(-1)
+        self.assertEqual(a.__dict__, {})
+        self.assertEqual(long(a), -1)  # self.assert_ PyNumber_Long() copies the sign bit
+
+        class precfloat(float):
+            __slots__ = ['prec']
+            def __init__(self, value=0.0, prec=12):
+                self.prec = int(prec)
+            def __repr__(self):
+                return "%.*g" % (self.prec, self)
+        self.assertEqual(repr(precfloat(1.1)), "1.1")
+        a = precfloat(12345)
+        self.assertEqual(a, 12345.0)
+        self.assertEqual(float(a), 12345.0)
+        self.assert_(float(a).__class__ is float)
+        self.assertEqual(hash(a), hash(12345.0))
+        self.assert_((+a).__class__ is float)
+
+        class madcomplex(complex):
+            def __repr__(self):
+                return "%.17gj%+.17g" % (self.imag, self.real)
+        a = madcomplex(-3, 4)
+        self.assertEqual(repr(a), "4j-3")
+        base = complex(-3, 4)
+        self.assertEqual(base.__class__, complex)
+        self.assertEqual(a, base)
+        self.assertEqual(complex(a), base)
+        self.assertEqual(complex(a).__class__, complex)
+        a = madcomplex(a)  # just trying another form of the constructor
+        self.assertEqual(repr(a), "4j-3")
+        self.assertEqual(a, base)
+        self.assertEqual(complex(a), base)
+        self.assertEqual(complex(a).__class__, complex)
+        self.assertEqual(hash(a), hash(base))
+        self.assertEqual((+a).__class__, complex)
+        self.assertEqual((a + 0).__class__, complex)
+        self.assertEqual(a + 0, base)
+        self.assertEqual((a - 0).__class__, complex)
+        self.assertEqual(a - 0, base)
+        self.assertEqual((a * 1).__class__, complex)
+        self.assertEqual(a * 1, base)
+        self.assertEqual((a / 1).__class__, complex)
+        self.assertEqual(a / 1, base)
+
+        class madtuple(tuple):
+            _rev = None
+            def rev(self):
+                if self._rev is not None:
+                    return self._rev
+                L = list(self)
+                L.reverse()
+                self._rev = self.__class__(L)
+                return self._rev
+        a = madtuple((1,2,3,4,5,6,7,8,9,0))
+        self.assertEqual(a, (1,2,3,4,5,6,7,8,9,0))
+        self.assertEqual(a.rev(), madtuple((0,9,8,7,6,5,4,3,2,1)))
+        self.assertEqual(a.rev().rev(), madtuple((1,2,3,4,5,6,7,8,9,0)))
+        for i in range(512):
+            t = madtuple(range(i))
+            u = t.rev()
+            v = u.rev()
+            self.assertEqual(v, t)
+        a = madtuple((1,2,3,4,5))
+        self.assertEqual(tuple(a), (1,2,3,4,5))
+        self.assert_(tuple(a).__class__ is tuple)
+        self.assertEqual(hash(a), hash((1,2,3,4,5)))
+        self.assert_(a[:].__class__ is tuple)
+        self.assert_((a * 1).__class__ is tuple)
+        self.assert_((a * 0).__class__ is tuple)
+        self.assert_((a + ()).__class__ is tuple)
+        a = madtuple(())
+        self.assertEqual(tuple(a), ())
+        self.assert_(tuple(a).__class__ is tuple)
+        self.assert_((a + a).__class__ is tuple)
+        self.assert_((a * 0).__class__ is tuple)
+        self.assert_((a * 1).__class__ is tuple)
+        self.assert_((a * 2).__class__ is tuple)
+        self.assert_(a[:].__class__ is tuple)
+
+        class madstring(str):
+            _rev = None
+            def rev(self):
+                if self._rev is not None:
+                    return self._rev
+                L = list(self)
+                L.reverse()
+                self._rev = self.__class__("".join(L))
+                return self._rev
+        s = madstring("abcdefghijklmnopqrstuvwxyz")
+        self.assertEqual(s, "abcdefghijklmnopqrstuvwxyz")
+        self.assertEqual(s.rev(), madstring("zyxwvutsrqponmlkjihgfedcba"))
+        self.assertEqual(s.rev().rev(), madstring("abcdefghijklmnopqrstuvwxyz"))
+        for i in range(256):
+            s = madstring("".join(map(chr, range(i))))
+            t = s.rev()
+            u = t.rev()
+            self.assertEqual(u, s)
+        s = madstring("12345")
+        self.assertEqual(str(s), "12345")
+        self.assert_(str(s).__class__ is str)
+
+        base = "\x00" * 5
+        s = madstring(base)
+        self.assertEqual(s, base)
+        self.assertEqual(str(s), base)
+        self.assert_(str(s).__class__ is str)
+        self.assertEqual(hash(s), hash(base))
+        self.assertEqual({s: 1}[base], 1)
+        self.assertEqual({base: 1}[s], 1)
+        self.assert_((s + "").__class__ is str)
+        self.assertEqual(s + "", base)
+        self.assert_(("" + s).__class__ is str)
+        self.assertEqual("" + s, base)
+        self.assert_((s * 0).__class__ is str)
+        self.assertEqual(s * 0, "")
+        self.assert_((s * 1).__class__ is str)
+        self.assertEqual(s * 1, base)
+        self.assert_((s * 2).__class__ is str)
+        self.assertEqual(s * 2, base + base)
+        self.assert_(s[:].__class__ is str)
+        self.assertEqual(s[:], base)
+        self.assert_(s[0:0].__class__ is str)
+        self.assertEqual(s[0:0], "")
+        self.assert_(s.strip().__class__ is str)
+        self.assertEqual(s.strip(), base)
+        self.assert_(s.lstrip().__class__ is str)
+        self.assertEqual(s.lstrip(), base)
+        self.assert_(s.rstrip().__class__ is str)
+        self.assertEqual(s.rstrip(), base)
+        identitytab = ''.join([chr(i) for i in range(256)])
+        self.assert_(s.translate(identitytab).__class__ is str)
+        self.assertEqual(s.translate(identitytab), base)
+        self.assert_(s.translate(identitytab, "x").__class__ is str)
+        self.assertEqual(s.translate(identitytab, "x"), base)
+        self.assertEqual(s.translate(identitytab, "\x00"), "")
+        self.assert_(s.replace("x", "x").__class__ is str)
+        self.assertEqual(s.replace("x", "x"), base)
+        self.assert_(s.ljust(len(s)).__class__ is str)
+        self.assertEqual(s.ljust(len(s)), base)
+        self.assert_(s.rjust(len(s)).__class__ is str)
+        self.assertEqual(s.rjust(len(s)), base)
+        self.assert_(s.center(len(s)).__class__ is str)
+        self.assertEqual(s.center(len(s)), base)
+        self.assert_(s.lower().__class__ is str)
+        self.assertEqual(s.lower(), base)
+
+        class madunicode(unicode):
+            _rev = None
+            def rev(self):
+                if self._rev is not None:
+                    return self._rev
+                L = list(self)
+                L.reverse()
+                self._rev = self.__class__(u"".join(L))
+                return self._rev
+        u = madunicode("ABCDEF")
+        self.assertEqual(u, u"ABCDEF")
+        self.assertEqual(u.rev(), madunicode(u"FEDCBA"))
+        self.assertEqual(u.rev().rev(), madunicode(u"ABCDEF"))
+        base = u"12345"
+        u = madunicode(base)
+        self.assertEqual(unicode(u), base)
+        self.assert_(unicode(u).__class__ is unicode)
+        self.assertEqual(hash(u), hash(base))
+        self.assertEqual({u: 1}[base], 1)
+        self.assertEqual({base: 1}[u], 1)
+        self.assert_(u.strip().__class__ is unicode)
+        self.assertEqual(u.strip(), base)
+        self.assert_(u.lstrip().__class__ is unicode)
+        self.assertEqual(u.lstrip(), base)
+        self.assert_(u.rstrip().__class__ is unicode)
+        self.assertEqual(u.rstrip(), base)
+        self.assert_(u.replace(u"x", u"x").__class__ is unicode)
+        self.assertEqual(u.replace(u"x", u"x"), base)
+        self.assert_(u.replace(u"xy", u"xy").__class__ is unicode)
+        self.assertEqual(u.replace(u"xy", u"xy"), base)
+        self.assert_(u.center(len(u)).__class__ is unicode)
+        self.assertEqual(u.center(len(u)), base)
+        self.assert_(u.ljust(len(u)).__class__ is unicode)
+        self.assertEqual(u.ljust(len(u)), base)
+        self.assert_(u.rjust(len(u)).__class__ is unicode)
+        self.assertEqual(u.rjust(len(u)), base)
+        self.assert_(u.lower().__class__ is unicode)
+        self.assertEqual(u.lower(), base)
+        self.assert_(u.upper().__class__ is unicode)
+        self.assertEqual(u.upper(), base)
+        self.assert_(u.capitalize().__class__ is unicode)
+        self.assertEqual(u.capitalize(), base)
+        self.assert_(u.title().__class__ is unicode)
+        self.assertEqual(u.title(), base)
+        self.assert_((u + u"").__class__ is unicode)
+        self.assertEqual(u + u"", base)
+        self.assert_((u"" + u).__class__ is unicode)
+        self.assertEqual(u"" + u, base)
+        self.assert_((u * 0).__class__ is unicode)
+        self.assertEqual(u * 0, u"")
+        self.assert_((u * 1).__class__ is unicode)
+        self.assertEqual(u * 1, base)
+        self.assert_((u * 2).__class__ is unicode)
+        self.assertEqual(u * 2, base + base)
+        self.assert_(u[:].__class__ is unicode)
+        self.assertEqual(u[:], base)
+        self.assert_(u[0:0].__class__ is unicode)
+        self.assertEqual(u[0:0], u"")
+
+        class sublist(list):
+            pass
+        a = sublist(range(5))
+        self.assertEqual(a, range(5))
+        a.append("hello")
+        self.assertEqual(a, range(5) + ["hello"])
+        a[5] = 5
+        self.assertEqual(a, range(6))
+        a.extend(range(6, 20))
+        self.assertEqual(a, range(20))
+        a[-5:] = []
+        self.assertEqual(a, range(15))
+        del a[10:15]
+        self.assertEqual(len(a), 10)
+        self.assertEqual(a, range(10))
+        self.assertEqual(list(a), range(10))
+        self.assertEqual(a[0], 0)
+        self.assertEqual(a[9], 9)
+        self.assertEqual(a[-10], 0)
+        self.assertEqual(a[-1], 9)
+        self.assertEqual(a[:5], range(5))
+
+        class CountedInput(file):
+            """Counts lines read by self.readline().
+
+            self.lineno is the 0-based ordinal of the last line read, up to
+            a maximum of one greater than the number of lines in the file.
+
+            self.ateof is true if and only if the final "" line has been read,
+            at which point self.lineno stops incrementing, and further calls
+            to readline() continue to return "".
+            """
+
+            lineno = 0
+            ateof = 0
+            def readline(self):
+                if self.ateof:
+                    return ""
+                s = file.readline(self)
+                # Next line works too.
+                # s = super(CountedInput, self).readline()
+                self.lineno += 1
+                if s == "":
+                    self.ateof = 1
+                return s
+
+        f = file(name=test_support.TESTFN, mode='w')
+        lines = ['a\n', 'b\n', 'c\n']
+        try:
+            f.writelines(lines)
+            f.close()
+            f = CountedInput(test_support.TESTFN)
+            for (i, expected) in zip(range(1, 5) + [4], lines + 2 * [""]):
+                got = f.readline()
+                self.assertEqual(expected, got)
+                self.assertEqual(f.lineno, i)
+                self.assertEqual(f.ateof, (i > len(lines)))
+            f.close()
+        finally:
+            try:
+                f.close()
+            except:
+                pass
+            test_support.unlink(test_support.TESTFN)
+
+    def test_keywords(self):
+        # Testing keyword args to basic type constructors ...
+        self.assertEqual(int(x=1), 1)
+        self.assertEqual(float(x=2), 2.0)
+        self.assertEqual(long(x=3), 3L)
+        self.assertEqual(complex(imag=42, real=666), complex(666, 42))
+        self.assertEqual(str(object=500), '500')
+        self.assertEqual(unicode(string='abc', errors='strict'), u'abc')
+        self.assertEqual(tuple(sequence=range(3)), (0, 1, 2))
+        self.assertEqual(list(sequence=(0, 1, 2)), range(3))
+        # note: as of Python 2.3, dict() no longer has an "items" keyword arg
+
+        for constructor in (int, float, long, complex, str, unicode,
+                            tuple, list, file):
+            try:
+                constructor(bogus_keyword_arg=1)
+            except TypeError:
+                pass
+            else:
+                self.fail("expected TypeError from bogus keyword argument to %r"
+                            % constructor)
+
+    def test_str_subclass_as_dict_key(self):
+        # Testing a str subclass used as dict key ..
+
+        class cistr(str):
+            """Sublcass of str that computes __eq__ case-insensitively.
+
+            Also computes a hash code of the string in canonical form.
+            """
+
+            def __init__(self, value):
+                self.canonical = value.lower()
+                self.hashcode = hash(self.canonical)
+
+            def __eq__(self, other):
+                if not isinstance(other, cistr):
+                    other = cistr(other)
+                return self.canonical == other.canonical
+
+            def __hash__(self):
+                return self.hashcode
+
+        self.assertEqual(cistr('ABC'), 'abc')
+        self.assertEqual('aBc', cistr('ABC'))
+        self.assertEqual(str(cistr('ABC')), 'ABC')
+
+        d = {cistr('one'): 1, cistr('two'): 2, cistr('tHree'): 3}
+        self.assertEqual(d[cistr('one')], 1)
+        self.assertEqual(d[cistr('tWo')], 2)
+        self.assertEqual(d[cistr('THrEE')], 3)
+        self.assert_(cistr('ONe') in d)
+        self.assertEqual(d.get(cistr('thrEE')), 3)
+
+    def test_classic_comparisons(self):
+        # Testing classic comparisons...
+        class classic:
+            pass
+
+        for base in (classic, int, object):
+            class C(base):
+                def __init__(self, value):
+                    self.value = int(value)
+                def __cmp__(self, other):
+                    if isinstance(other, C):
+                        return cmp(self.value, other.value)
+                    if isinstance(other, int) or isinstance(other, long):
+                        return cmp(self.value, other)
+                    return NotImplemented
+
+            c1 = C(1)
+            c2 = C(2)
+            c3 = C(3)
+            self.assertEqual(c1, 1)
+            c = {1: c1, 2: c2, 3: c3}
+            for x in 1, 2, 3:
+                for y in 1, 2, 3:
+                    self.assert_(cmp(c[x], c[y]) == cmp(x, y), "x=%d, y=%d" % (x, y))
+                    for op in "<", "<=", "==", "!=", ">", ">=":
+                        self.assert_(eval("c[x] %s c[y]" % op) == eval("x %s y" % op),
+                               "x=%d, y=%d" % (x, y))
+                    self.assert_(cmp(c[x], y) == cmp(x, y), "x=%d, y=%d" % (x, y))
+                    self.assert_(cmp(x, c[y]) == cmp(x, y), "x=%d, y=%d" % (x, y))
+
+    def test_rich_comparisons(self):
+        # Testing rich comparisons...
+        class Z(complex):
+            pass
+        z = Z(1)
+        self.assertEqual(z, 1+0j)
+        self.assertEqual(1+0j, z)
+        class ZZ(complex):
+            def __eq__(self, other):
+                try:
+                    return abs(self - other) <= 1e-6
+                except:
+                    return NotImplemented
+        zz = ZZ(1.0000003)
+        self.assertEqual(zz, 1+0j)
+        self.assertEqual(1+0j, zz)
+
+        class classic:
+            pass
+        for base in (classic, int, object, list):
+            class C(base):
+                def __init__(self, value):
+                    self.value = int(value)
+                def __cmp__(self_, other):
+                    self.fail("shouldn't call __cmp__")
+                def __eq__(self, other):
+                    if isinstance(other, C):
+                        return self.value == other.value
+                    if isinstance(other, int) or isinstance(other, long):
+                        return self.value == other
+                    return NotImplemented
+                def __ne__(self, other):
+                    if isinstance(other, C):
+                        return self.value != other.value
+                    if isinstance(other, int) or isinstance(other, long):
+                        return self.value != other
+                    return NotImplemented
+                def __lt__(self, other):
+                    if isinstance(other, C):
+                        return self.value < other.value
+                    if isinstance(other, int) or isinstance(other, long):
+                        return self.value < other
+                    return NotImplemented
+                def __le__(self, other):
+                    if isinstance(other, C):
+                        return self.value <= other.value
+                    if isinstance(other, int) or isinstance(other, long):
+                        return self.value <= other
+                    return NotImplemented
+                def __gt__(self, other):
+                    if isinstance(other, C):
+                        return self.value > other.value
+                    if isinstance(other, int) or isinstance(other, long):
+                        return self.value > other
+                    return NotImplemented
+                def __ge__(self, other):
+                    if isinstance(other, C):
+                        return self.value >= other.value
+                    if isinstance(other, int) or isinstance(other, long):
+                        return self.value >= other
+                    return NotImplemented
+            c1 = C(1)
+            c2 = C(2)
+            c3 = C(3)
+            self.assertEqual(c1, 1)
+            c = {1: c1, 2: c2, 3: c3}
+            for x in 1, 2, 3:
+                for y in 1, 2, 3:
+                    for op in "<", "<=", "==", "!=", ">", ">=":
+                        self.assert_(eval("c[x] %s c[y]" % op) == eval("x %s y" % op),
+                               "x=%d, y=%d" % (x, y))
+                        self.assert_(eval("c[x] %s y" % op) == eval("x %s y" % op),
+                               "x=%d, y=%d" % (x, y))
+                        self.assert_(eval("x %s c[y]" % op) == eval("x %s y" % op),
+                               "x=%d, y=%d" % (x, y))
+
+    def test_coercions(self):
+        # Testing coercions...
+        class I(int): pass
+        coerce(I(0), 0)
+        coerce(0, I(0))
+        class L(long): pass
+        coerce(L(0), 0)
+        coerce(L(0), 0L)
+        coerce(0, L(0))
+        coerce(0L, L(0))
+        class F(float): pass
+        coerce(F(0), 0)
+        coerce(F(0), 0L)
+        coerce(F(0), 0.)
+        coerce(0, F(0))
+        coerce(0L, F(0))
+        coerce(0., F(0))
+        class C(complex): pass
+        coerce(C(0), 0)
+        coerce(C(0), 0L)
+        coerce(C(0), 0.)
+        coerce(C(0), 0j)
+        coerce(0, C(0))
+        coerce(0L, C(0))
+        coerce(0., C(0))
+        coerce(0j, C(0))
+
+    def test_descrdoc(self):
+        # Testing descriptor doc strings...
+        def check(descr, what):
+            self.assertEqual(descr.__doc__, what)
+        check(file.closed, "True if the file is closed") # getset descriptor
+        check(file.name, "file name") # member descriptor
+
+    def test_doc_descriptor(self):
+        # Testing __doc__ descriptor...
+        # SF bug 542984
+        class DocDescr(object):
+            def __get__(self, object, otype):
+                if object:
+                    object = object.__class__.__name__ + ' instance'
+                if otype:
+                    otype = otype.__name__
+                return 'object=%s; type=%s' % (object, otype)
+        class OldClass:
+            __doc__ = DocDescr()
+        class NewClass(object):
+            __doc__ = DocDescr()
+        self.assertEqual(OldClass.__doc__, 'object=None; type=OldClass')
+        self.assertEqual(OldClass().__doc__, 'object=OldClass instance; type=OldClass')
+        self.assertEqual(NewClass.__doc__, 'object=None; type=NewClass')
+        self.assertEqual(NewClass().__doc__, 'object=NewClass instance; type=NewClass')
+
+    def test_set_class(self):
+        # Testing __class__ assignment...
+        class C(object): pass
+        class D(object): pass
+        class E(object): pass
+        class F(D, E): pass
+        for cls in C, D, E, F:
+            for cls2 in C, D, E, F:
+                x = cls()
+                x.__class__ = cls2
+                self.assert_(x.__class__ is cls2)
+                x.__class__ = cls
+                self.assert_(x.__class__ is cls)
+        def cant(x, C):
+            try:
+                x.__class__ = C
+            except TypeError:
+                pass
+            else:
+                self.fail("shouldn't allow %r.__class__ = %r" % (x, C))
+            try:
+                delattr(x, "__class__")
+            except TypeError:
+                pass
+            else:
+                self.fail("shouldn't allow del %r.__class__" % x)
+        cant(C(), list)
+        cant(list(), C)
+        cant(C(), 1)
+        cant(C(), object)
+        cant(object(), list)
+        cant(list(), object)
+        class Int(int): __slots__ = []
+        cant(2, Int)
+        cant(Int(), int)
+        cant(True, int)
+        cant(2, bool)
+        o = object()
+        cant(o, type(1))
+        cant(o, type(None))
+        del o
+        class G(object):
+            __slots__ = ["a", "b"]
+        class H(object):
+            __slots__ = ["b", "a"]
+        try:
+            unicode
+        except NameError:
+            class I(object):
+                __slots__ = ["a", "b"]
+        else:
+            class I(object):
+                __slots__ = [unicode("a"), unicode("b")]
+        class J(object):
+            __slots__ = ["c", "b"]
+        class K(object):
+            __slots__ = ["a", "b", "d"]
+        class L(H):
+            __slots__ = ["e"]
+        class M(I):
+            __slots__ = ["e"]
+        class N(J):
+            __slots__ = ["__weakref__"]
+        class P(J):
+            __slots__ = ["__dict__"]
+        class Q(J):
+            pass
+        class R(J):
+            __slots__ = ["__dict__", "__weakref__"]
+
+        for cls, cls2 in ((G, H), (G, I), (I, H), (Q, R), (R, Q)):
+            x = cls()
+            x.a = 1
+            x.__class__ = cls2
+            self.assert_(x.__class__ is cls2,
+                   "assigning %r as __class__ for %r silently failed" % (cls2, x))
+            self.assertEqual(x.a, 1)
+            x.__class__ = cls
+            self.assert_(x.__class__ is cls,
+                   "assigning %r as __class__ for %r silently failed" % (cls, x))
+            self.assertEqual(x.a, 1)
+        for cls in G, J, K, L, M, N, P, R, list, Int:
+            for cls2 in G, J, K, L, M, N, P, R, list, Int:
+                if cls is cls2:
+                    continue
+                cant(cls(), cls2)
+
+    def test_set_dict(self):
+        # Testing __dict__ assignment...
+        class C(object): pass
+        a = C()
+        a.__dict__ = {'b': 1}
+        self.assertEqual(a.b, 1)
+        def cant(x, dict):
+            try:
+                x.__dict__ = dict
+            except (AttributeError, TypeError):
+                pass
+            else:
+                self.fail("shouldn't allow %r.__dict__ = %r" % (x, dict))
+        cant(a, None)
+        cant(a, [])
+        cant(a, 1)
+        del a.__dict__ # Deleting __dict__ is allowed
+
+        class Base(object):
+            pass
+        def verify_dict_readonly(x):
+            """
+            x has to be an instance of a class inheriting from Base.
+            """
+            cant(x, {})
+            try:
+                del x.__dict__
+            except (AttributeError, TypeError):
+                pass
+            else:
+                self.fail("shouldn't allow del %r.__dict__" % x)
+            dict_descr = Base.__dict__["__dict__"]
+            try:
+                dict_descr.__set__(x, {})
+            except (AttributeError, TypeError):
+                pass
+            else:
+                self.fail("dict_descr allowed access to %r's dict" % x)
+
+        # Classes don't allow __dict__ assignment and have readonly dicts
+        class Meta1(type, Base):
+            pass
+        class Meta2(Base, type):
+            pass
+        class D(object):
+            __metaclass__ = Meta1
+        class E(object):
+            __metaclass__ = Meta2
+        for cls in C, D, E:
+            verify_dict_readonly(cls)
+            class_dict = cls.__dict__
+            try:
+                class_dict["spam"] = "eggs"
+            except TypeError:
+                pass
+            else:
+                self.fail("%r's __dict__ can be modified" % cls)
+
+        # Modules also disallow __dict__ assignment
+        class Module1(types.ModuleType, Base):
+            pass
+        class Module2(Base, types.ModuleType):
+            pass
+        for ModuleType in Module1, Module2:
+            mod = ModuleType("spam")
+            verify_dict_readonly(mod)
+            mod.__dict__["spam"] = "eggs"
+
+        # Exception's __dict__ can be replaced, but not deleted
+        class Exception1(Exception, Base):
+            pass
+        class Exception2(Base, Exception):
+            pass
+        for ExceptionType in Exception, Exception1, Exception2:
+            e = ExceptionType()
+            e.__dict__ = {"a": 1}
+            self.assertEqual(e.a, 1)
+            try:
+                del e.__dict__
+            except (TypeError, AttributeError):
+                pass
+            else:
+                self.fail("%r's __dict__ can be deleted" % e)
+
+    def test_pickles(self):
+        # Testing pickling and copying new-style classes and objects...
+        import pickle, cPickle
+
+        def sorteditems(d):
+            L = d.items()
+            L.sort()
+            return L
+
+        global C
+        class C(object):
+            def __init__(self, a, b):
+                super(C, self).__init__()
+                self.a = a
+                self.b = b
+            def __repr__(self):
+                return "C(%r, %r)" % (self.a, self.b)
+
+        global C1
+        class C1(list):
+            def __new__(cls, a, b):
+                return super(C1, cls).__new__(cls)
+            def __getnewargs__(self):
+                return (self.a, self.b)
+            def __init__(self, a, b):
+                self.a = a
+                self.b = b
+            def __repr__(self):
+                return "C1(%r, %r)<%r>" % (self.a, self.b, list(self))
+
+        global C2
+        class C2(int):
+            def __new__(cls, a, b, val=0):
+                return super(C2, cls).__new__(cls, val)
+            def __getnewargs__(self):
+                return (self.a, self.b, int(self))
+            def __init__(self, a, b, val=0):
+                self.a = a
+                self.b = b
+            def __repr__(self):
+                return "C2(%r, %r)<%r>" % (self.a, self.b, int(self))
+
+        global C3
+        class C3(object):
+            def __init__(self, foo):
+                self.foo = foo
+            def __getstate__(self):
+                return self.foo
+            def __setstate__(self, foo):
+                self.foo = foo
+
+        global C4classic, C4
+        class C4classic: # classic
+            pass
+        class C4(C4classic, object): # mixed inheritance
+            pass
+
+        for p in pickle, cPickle:
+            for bin in 0, 1:
+                for cls in C, C1, C2:
+                    s = p.dumps(cls, bin)
+                    cls2 = p.loads(s)
+                    self.assert_(cls2 is cls)
+
+                a = C1(1, 2); a.append(42); a.append(24)
+                b = C2("hello", "world", 42)
+                s = p.dumps((a, b), bin)
+                x, y = p.loads(s)
+                self.assertEqual(x.__class__, a.__class__)
+                self.assertEqual(sorteditems(x.__dict__), sorteditems(a.__dict__))
+                self.assertEqual(y.__class__, b.__class__)
+                self.assertEqual(sorteditems(y.__dict__), sorteditems(b.__dict__))
+                self.assertEqual(repr(x), repr(a))
+                self.assertEqual(repr(y), repr(b))
+                # Test for __getstate__ and __setstate__ on new style class
+                u = C3(42)
+                s = p.dumps(u, bin)
+                v = p.loads(s)
+                self.assertEqual(u.__class__, v.__class__)
+                self.assertEqual(u.foo, v.foo)
+                # Test for picklability of hybrid class
+                u = C4()
+                u.foo = 42
+                s = p.dumps(u, bin)
+                v = p.loads(s)
+                self.assertEqual(u.__class__, v.__class__)
+                self.assertEqual(u.foo, v.foo)
+
+        # Testing copy.deepcopy()
+        import copy
+        for cls in C, C1, C2:
+            cls2 = copy.deepcopy(cls)
+            self.assert_(cls2 is cls)
+
+        a = C1(1, 2); a.append(42); a.append(24)
+        b = C2("hello", "world", 42)
+        x, y = copy.deepcopy((a, b))
+        self.assertEqual(x.__class__, a.__class__)
+        self.assertEqual(sorteditems(x.__dict__), sorteditems(a.__dict__))
+        self.assertEqual(y.__class__, b.__class__)
+        self.assertEqual(sorteditems(y.__dict__), sorteditems(b.__dict__))
+        self.assertEqual(repr(x), repr(a))
+        self.assertEqual(repr(y), repr(b))
+
+    def test_pickle_slots(self):
+        # Testing pickling of classes with __slots__ ...
+        import pickle, cPickle
+        # Pickling of classes with __slots__ but without __getstate__ should fail
+        global B, C, D, E
+        class B(object):
+            pass
+        for base in [object, B]:
+            class C(base):
+                __slots__ = ['a']
+            class D(C):
+                pass
+            try:
+                pickle.dumps(C())
+            except TypeError:
+                pass
+            else:
+                self.fail("should fail: pickle C instance - %s" % base)
+            try:
+                cPickle.dumps(C())
+            except TypeError:
+                pass
+            else:
+                self.fail("should fail: cPickle C instance - %s" % base)
+            try:
+                pickle.dumps(C())
+            except TypeError:
+                pass
+            else:
+                self.fail("should fail: pickle D instance - %s" % base)
+            try:
+                cPickle.dumps(D())
+            except TypeError:
+                pass
+            else:
+                self.fail("should fail: cPickle D instance - %s" % base)
+            # Give C a nice generic __getstate__ and __setstate__
+            class C(base):
+                __slots__ = ['a']
+                def __getstate__(self):
+                    try:
+                        d = self.__dict__.copy()
+                    except AttributeError:
+                        d = {}
+                    for cls in self.__class__.__mro__:
+                        for sn in cls.__dict__.get('__slots__', ()):
+                            try:
+                                d[sn] = getattr(self, sn)
+                            except AttributeError:
+                                pass
+                    return d
+                def __setstate__(self, d):
+                    for k, v in d.items():
+                        setattr(self, k, v)
+            class D(C):
+                pass
+            # Now it should work
+            x = C()
+            y = pickle.loads(pickle.dumps(x))
+            self.assertEqual(hasattr(y, 'a'), 0)
+            y = cPickle.loads(cPickle.dumps(x))
+            self.assertEqual(hasattr(y, 'a'), 0)
+            x.a = 42
+            y = pickle.loads(pickle.dumps(x))
+            self.assertEqual(y.a, 42)
+            y = cPickle.loads(cPickle.dumps(x))
+            self.assertEqual(y.a, 42)
+            x = D()
+            x.a = 42
+            x.b = 100
+            y = pickle.loads(pickle.dumps(x))
+            self.assertEqual(y.a + y.b, 142)
+            y = cPickle.loads(cPickle.dumps(x))
+            self.assertEqual(y.a + y.b, 142)
+            # A subclass that adds a slot should also work
+            class E(C):
+                __slots__ = ['b']
+            x = E()
+            x.a = 42
+            x.b = "foo"
+            y = pickle.loads(pickle.dumps(x))
+            self.assertEqual(y.a, x.a)
+            self.assertEqual(y.b, x.b)
+            y = cPickle.loads(cPickle.dumps(x))
+            self.assertEqual(y.a, x.a)
+            self.assertEqual(y.b, x.b)
+
+    def test_binary_operator_override(self):
+        # Testing overrides of binary operations...
+        class I(int):
+            def __repr__(self):
+                return "I(%r)" % int(self)
+            def __add__(self, other):
+                return I(int(self) + int(other))
+            __radd__ = __add__
+            def __pow__(self, other, mod=None):
+                if mod is None:
+                    return I(pow(int(self), int(other)))
+                else:
+                    return I(pow(int(self), int(other), int(mod)))
+            def __rpow__(self, other, mod=None):
+                if mod is None:
+                    return I(pow(int(other), int(self), mod))
+                else:
+                    return I(pow(int(other), int(self), int(mod)))
+
+        self.assertEqual(repr(I(1) + I(2)), "I(3)")
+        self.assertEqual(repr(I(1) + 2), "I(3)")
+        self.assertEqual(repr(1 + I(2)), "I(3)")
+        self.assertEqual(repr(I(2) ** I(3)), "I(8)")
+        self.assertEqual(repr(2 ** I(3)), "I(8)")
+        self.assertEqual(repr(I(2) ** 3), "I(8)")
+        self.assertEqual(repr(pow(I(2), I(3), I(5))), "I(3)")
+        class S(str):
+            def __eq__(self, other):
+                return self.lower() == other.lower()
+
+    def test_subclass_propagation(self):
+        # Testing propagation of slot functions to subclasses...
+        class A(object):
+            pass
+        class B(A):
+            pass
+        class C(A):
+            pass
+        class D(B, C):
+            pass
+        d = D()
+        orig_hash = hash(d) # related to id(d) in platform-dependent ways
+        A.__hash__ = lambda self: 42
+        self.assertEqual(hash(d), 42)
+        C.__hash__ = lambda self: 314
+        self.assertEqual(hash(d), 314)
+        B.__hash__ = lambda self: 144
+        self.assertEqual(hash(d), 144)
+        D.__hash__ = lambda self: 100
+        self.assertEqual(hash(d), 100)
+        del D.__hash__
+        self.assertEqual(hash(d), 144)
+        del B.__hash__
+        self.assertEqual(hash(d), 314)
+        del C.__hash__
+        self.assertEqual(hash(d), 42)
+        del A.__hash__
+        self.assertEqual(hash(d), orig_hash)
+        d.foo = 42
+        d.bar = 42
+        self.assertEqual(d.foo, 42)
+        self.assertEqual(d.bar, 42)
+        def __getattribute__(self, name):
+            if name == "foo":
+                return 24
+            return object.__getattribute__(self, name)
+        A.__getattribute__ = __getattribute__
+        self.assertEqual(d.foo, 24)
+        self.assertEqual(d.bar, 42)
+        def __getattr__(self, name):
+            if name in ("spam", "foo", "bar"):
+                return "hello"
+            raise AttributeError, name
+        B.__getattr__ = __getattr__
+        self.assertEqual(d.spam, "hello")
+        self.assertEqual(d.foo, 24)
+        self.assertEqual(d.bar, 42)
+        del A.__getattribute__
+        self.assertEqual(d.foo, 42)
+        del d.foo
+        self.assertEqual(d.foo, "hello")
+        self.assertEqual(d.bar, 42)
+        del B.__getattr__
+        try:
+            d.foo
+        except AttributeError:
+            pass
+        else:
+            self.fail("d.foo should be undefined now")
+
+        # Test a nasty bug in recurse_down_subclasses()
+        import gc
+        class A(object):
+            pass
+        class B(A):
+            pass
+        del B
+        gc.collect()
+        A.__setitem__ = lambda *a: None # crash
+
+    def test_buffer_inheritance(self):
+        # Testing that buffer interface is inherited ...
+
+        import binascii
+        # SF bug [#470040] ParseTuple t# vs subclasses.
+
+        class MyStr(str):
+            pass
+        base = 'abc'
+        m = MyStr(base)
+        # b2a_hex uses the buffer interface to get its argument's value, via
+        # PyArg_ParseTuple 't#' code.
+        self.assertEqual(binascii.b2a_hex(m), binascii.b2a_hex(base))
+
+        # It's not clear that unicode will continue to support the character
+        # buffer interface, and this test will fail if that's taken away.
+        class MyUni(unicode):
+            pass
+        base = u'abc'
+        m = MyUni(base)
+        self.assertEqual(binascii.b2a_hex(m), binascii.b2a_hex(base))
+
+        class MyInt(int):
+            pass
+        m = MyInt(42)
+        try:
+            binascii.b2a_hex(m)
+            self.fail('subclass of int should not have a buffer interface')
+        except TypeError:
+            pass
+
+    def test_str_of_str_subclass(self):
+        # Testing __str__ defined in subclass of str ...
+        import binascii
+        import cStringIO
+
+        class octetstring(str):
+            def __str__(self):
+                return binascii.b2a_hex(self)
+            def __repr__(self):
+                return self + " repr"
+
+        o = octetstring('A')
+        self.assertEqual(type(o), octetstring)
+        self.assertEqual(type(str(o)), str)
+        self.assertEqual(type(repr(o)), str)
+        self.assertEqual(ord(o), 0x41)
+        self.assertEqual(str(o), '41')
+        self.assertEqual(repr(o), 'A repr')
+        self.assertEqual(o.__str__(), '41')
+        self.assertEqual(o.__repr__(), 'A repr')
+
+        capture = cStringIO.StringIO()
+        # Calling str() or not exercises different internal paths.
+        print >> capture, o
+        print >> capture, str(o)
+        self.assertEqual(capture.getvalue(), '41\n41\n')
+        capture.close()
+
+    def test_keyword_arguments(self):
+        # Testing keyword arguments to __init__, __call__...
+        def f(a): return a
+        self.assertEqual(f.__call__(a=42), 42)
+        a = []
+        list.__init__(a, sequence=[0, 1, 2])
+        self.assertEqual(a, [0, 1, 2])
+
+    def test_recursive_call(self):
+        # Testing recursive __call__() by setting to instance of class...
+        class A(object):
+            pass
+
+        A.__call__ = A()
+        try:
+            A()()
+        except RuntimeError:
+            pass
+        else:
+            self.fail("Recursion limit should have been reached for __call__()")
+
+    def test_delete_hook(self):
+        # Testing __del__ hook...
+        log = []
+        class C(object):
+            def __del__(self):
+                log.append(1)
+        c = C()
+        self.assertEqual(log, [])
+        del c
+        self.assertEqual(log, [1])
+
+        class D(object): pass
+        d = D()
+        try: del d[0]
+        except TypeError: pass
+        else: self.fail("invalid del() didn't raise TypeError")
+
+    def test_hash_inheritance(self):
+        # Testing hash of mutable subclasses...
+
+        class mydict(dict):
+            pass
+        d = mydict()
+        try:
+            hash(d)
+        except TypeError:
+            pass
+        else:
+            self.fail("hash() of dict subclass should fail")
+
+        class mylist(list):
+            pass
+        d = mylist()
+        try:
+            hash(d)
+        except TypeError:
+            pass
+        else:
+            self.fail("hash() of list subclass should fail")
+
+    def test_str_operations(self):
+        try: 'a' + 5
+        except TypeError: pass
+        else: self.fail("'' + 5 doesn't raise TypeError")
+
+        try: ''.split('')
+        except ValueError: pass
+        else: self.fail("''.split('') doesn't raise ValueError")
+
+        try: ''.join([0])
+        except TypeError: pass
+        else: self.fail("''.join([0]) doesn't raise TypeError")
+
+        try: ''.rindex('5')
+        except ValueError: pass
+        else: self.fail("''.rindex('5') doesn't raise ValueError")
+
+        try: '%(n)s' % None
+        except TypeError: pass
+        else: self.fail("'%(n)s' % None doesn't raise TypeError")
+
+        try: '%(n' % {}
+        except ValueError: pass
+        else: self.fail("'%(n' % {} '' doesn't raise ValueError")
+
+        try: '%*s' % ('abc')
+        except TypeError: pass
+        else: self.fail("'%*s' % ('abc') doesn't raise TypeError")
+
+        try: '%*.*s' % ('abc', 5)
+        except TypeError: pass
+        else: self.fail("'%*.*s' % ('abc', 5) doesn't raise TypeError")
+
+        try: '%s' % (1, 2)
+        except TypeError: pass
+        else: self.fail("'%s' % (1, 2) doesn't raise TypeError")
+
+        try: '%' % None
+        except ValueError: pass
+        else: self.fail("'%' % None doesn't raise ValueError")
+
+        self.assertEqual('534253'.isdigit(), 1)
+        self.assertEqual('534253x'.isdigit(), 0)
+        self.assertEqual('%c' % 5, '\x05')
+        self.assertEqual('%c' % '5', '5')
+
+    def test_deepcopy_recursive(self):
+        # Testing deepcopy of recursive objects...
+        class Node:
+            pass
+        a = Node()
+        b = Node()
+        a.b = b
+        b.a = a
+        z = deepcopy(a) # This blew up before
+
+    def test_unintialized_modules(self):
+        # Testing uninitialized module objects...
+        from types import ModuleType as M
+        m = M.__new__(M)
+        str(m)
+        self.assertEqual(hasattr(m, "__name__"), 0)
+        self.assertEqual(hasattr(m, "__file__"), 0)
+        self.assertEqual(hasattr(m, "foo"), 0)
+        self.assertEqual(m.__dict__, None)
+        m.foo = 1
+        self.assertEqual(m.__dict__, {"foo": 1})
+
+    def test_funny_new(self):
+        # Testing __new__ returning something unexpected...
+        class C(object):
+            def __new__(cls, arg):
+                if isinstance(arg, str): return [1, 2, 3]
+                elif isinstance(arg, int): return object.__new__(D)
+                else: return object.__new__(cls)
+        class D(C):
+            def __init__(self, arg):
+                self.foo = arg
+        self.assertEqual(C("1"), [1, 2, 3])
+        self.assertEqual(D("1"), [1, 2, 3])
+        d = D(None)
+        self.assertEqual(d.foo, None)
+        d = C(1)
+        self.assertEqual(isinstance(d, D), True)
+        self.assertEqual(d.foo, 1)
+        d = D(1)
+        self.assertEqual(isinstance(d, D), True)
+        self.assertEqual(d.foo, 1)
+
+    def test_imul_bug(self):
+        # Testing for __imul__ problems...
+        # SF bug 544647
+        class C(object):
+            def __imul__(self, other):
+                return (self, other)
+        x = C()
+        y = x
+        y *= 1.0
+        self.assertEqual(y, (x, 1.0))
+        y = x
+        y *= 2
+        self.assertEqual(y, (x, 2))
+        y = x
+        y *= 3L
+        self.assertEqual(y, (x, 3L))
+        y = x
+        y *= 1L<<100
+        self.assertEqual(y, (x, 1L<<100))
+        y = x
+        y *= None
+        self.assertEqual(y, (x, None))
+        y = x
+        y *= "foo"
+        self.assertEqual(y, (x, "foo"))
+
+    def test_copy_setstate(self):
+        # Testing that copy.*copy() correctly uses __setstate__...
+        import copy
+        class C(object):
+            def __init__(self, foo=None):
+                self.foo = foo
+                self.__foo = foo
+            def setfoo(self, foo=None):
+                self.foo = foo
+            def getfoo(self):
+                return self.__foo
+            def __getstate__(self):
+                return [self.foo]
+            def __setstate__(self_, lst):
+                self.assertEqual(len(lst), 1)
+                self_.__foo = self_.foo = lst[0]
+        a = C(42)
+        a.setfoo(24)
+        self.assertEqual(a.foo, 24)
+        self.assertEqual(a.getfoo(), 42)
+        b = copy.copy(a)
+        self.assertEqual(b.foo, 24)
+        self.assertEqual(b.getfoo(), 24)
+        b = copy.deepcopy(a)
+        self.assertEqual(b.foo, 24)
+        self.assertEqual(b.getfoo(), 24)
+
+    def test_slices(self):
+        # Testing cases with slices and overridden __getitem__ ...
+
+        # Strings
+        self.assertEqual("hello"[:4], "hell")
+        self.assertEqual("hello"[slice(4)], "hell")
+        self.assertEqual(str.__getitem__("hello", slice(4)), "hell")
+        class S(str):
+            def __getitem__(self, x):
+                return str.__getitem__(self, x)
+        self.assertEqual(S("hello")[:4], "hell")
+        self.assertEqual(S("hello")[slice(4)], "hell")
+        self.assertEqual(S("hello").__getitem__(slice(4)), "hell")
+        # Tuples
+        self.assertEqual((1,2,3)[:2], (1,2))
+        self.assertEqual((1,2,3)[slice(2)], (1,2))
+        self.assertEqual(tuple.__getitem__((1,2,3), slice(2)), (1,2))
+        class T(tuple):
+            def __getitem__(self, x):
+                return tuple.__getitem__(self, x)
+        self.assertEqual(T((1,2,3))[:2], (1,2))
+        self.assertEqual(T((1,2,3))[slice(2)], (1,2))
+        self.assertEqual(T((1,2,3)).__getitem__(slice(2)), (1,2))
+        # Lists
+        self.assertEqual([1,2,3][:2], [1,2])
+        self.assertEqual([1,2,3][slice(2)], [1,2])
+        self.assertEqual(list.__getitem__([1,2,3], slice(2)), [1,2])
+        class L(list):
+            def __getitem__(self, x):
+                return list.__getitem__(self, x)
+        self.assertEqual(L([1,2,3])[:2], [1,2])
+        self.assertEqual(L([1,2,3])[slice(2)], [1,2])
+        self.assertEqual(L([1,2,3]).__getitem__(slice(2)), [1,2])
+        # Now do lists and __setitem__
+        a = L([1,2,3])
+        a[slice(1, 3)] = [3,2]
+        self.assertEqual(a, [1,3,2])
+        a[slice(0, 2, 1)] = [3,1]
+        self.assertEqual(a, [3,1,2])
+        a.__setitem__(slice(1, 3), [2,1])
+        self.assertEqual(a, [3,2,1])
+        a.__setitem__(slice(0, 2, 1), [2,3])
+        self.assertEqual(a, [2,3,1])
+
+    def test_subtype_resurrection(self):
+        # Testing resurrection of new-style instance...
+
+        class C(object):
+            container = []
+
+            def __del__(self):
+                # resurrect the instance
+                C.container.append(self)
+
+        c = C()
+        c.attr = 42
+
+        # The most interesting thing here is whether this blows up, due to flawed
+        # GC tracking logic in typeobject.c's call_finalizer() (a 2.2.1 bug).
+        del c
+
+        # If that didn't blow up, it's also interesting to see whether clearing
+        # the last container slot works:  that will attempt to delete c again,
+        # which will cause c to get appended back to the container again "during"
+        # the del.
+        del C.container[-1]
+        self.assertEqual(len(C.container), 1)
+        self.assertEqual(C.container[-1].attr, 42)
+
+        # Make c mortal again, so that the test framework with -l doesn't report
+        # it as a leak.
+        del C.__del__
+
+    def test_slots_trash(self):
+        # Testing slot trash...
+        # Deallocating deeply nested slotted trash caused stack overflows
+        class trash(object):
+            __slots__ = ['x']
+            def __init__(self, x):
+                self.x = x
+        o = None
+        for i in xrange(50000):
+            o = trash(o)
+        del o
+
+    def test_slots_multiple_inheritance(self):
+        # SF bug 575229, multiple inheritance w/ slots dumps core
+        class A(object):
+            __slots__=()
+        class B(object):
+            pass
+        class C(A,B) :
+            __slots__=()
+        self.assertEqual(C.__basicsize__, B.__basicsize__)
+        self.assert_(hasattr(C, '__dict__'))
+        self.assert_(hasattr(C, '__weakref__'))
+        C().x = 2
+
+    def test_rmul(self):
+        # Testing correct invocation of __rmul__...
+        # SF patch 592646
+        class C(object):
+            def __mul__(self, other):
+                return "mul"
+            def __rmul__(self, other):
+                return "rmul"
+        a = C()
+        self.assertEqual(a*2, "mul")
+        self.assertEqual(a*2.2, "mul")
+        self.assertEqual(2*a, "rmul")
+        self.assertEqual(2.2*a, "rmul")
+
+    def test_ipow(self):
+        # Testing correct invocation of __ipow__...
+        # [SF bug 620179]
+        class C(object):
+            def __ipow__(self, other):
+                pass
+        a = C()
+        a **= 2
+
+    def test_mutable_bases(self):
+        # Testing mutable bases...
+
+        # stuff that should work:
+        class C(object):
+            pass
+        class C2(object):
+            def __getattribute__(self, attr):
+                if attr == 'a':
+                    return 2
+                else:
+                    return super(C2, self).__getattribute__(attr)
+            def meth(self):
+                return 1
+        class D(C):
+            pass
+        class E(D):
+            pass
+        d = D()
+        e = E()
+        D.__bases__ = (C,)
+        D.__bases__ = (C2,)
+        self.assertEqual(d.meth(), 1)
+        self.assertEqual(e.meth(), 1)
+        self.assertEqual(d.a, 2)
+        self.assertEqual(e.a, 2)
+        self.assertEqual(C2.__subclasses__(), [D])
+
+        # stuff that shouldn't:
+        class L(list):
+            pass
+
+        try:
+            L.__bases__ = (dict,)
+        except TypeError:
+            pass
+        else:
+            self.fail("shouldn't turn list subclass into dict subclass")
+
+        try:
+            list.__bases__ = (dict,)
+        except TypeError:
+            pass
+        else:
+            self.fail("shouldn't be able to assign to list.__bases__")
+
+        try:
+            D.__bases__ = (C2, list)
+        except TypeError:
+            pass
+        else:
+            assert 0, "best_base calculation found wanting"
+
+        try:
+            del D.__bases__
+        except TypeError:
+            pass
+        else:
+            self.fail("shouldn't be able to delete .__bases__")
+
+        try:
+            D.__bases__ = ()
+        except TypeError, msg:
+            if str(msg) == "a new-style class can't have only classic bases":
+                self.fail("wrong error message for .__bases__ = ()")
+        else:
+            self.fail("shouldn't be able to set .__bases__ to ()")
+
+        try:
+            D.__bases__ = (D,)
+        except TypeError:
+            pass
+        else:
+            # actually, we'll have crashed by here...
+            self.fail("shouldn't be able to create inheritance cycles")
+
+        try:
+            D.__bases__ = (C, C)
+        except TypeError:
+            pass
+        else:
+            self.fail("didn't detect repeated base classes")
+
+        try:
+            D.__bases__ = (E,)
+        except TypeError:
+            pass
+        else:
+            self.fail("shouldn't be able to create inheritance cycles")
+
+        # let's throw a classic class into the mix:
+        class Classic:
+            def meth2(self):
+                return 3
+
+        D.__bases__ = (C, Classic)
+
+        self.assertEqual(d.meth2(), 3)
+        self.assertEqual(e.meth2(), 3)
+        try:
+            d.a
+        except AttributeError:
+            pass
+        else:
+            self.fail("attribute should have vanished")
+
+        try:
+            D.__bases__ = (Classic,)
+        except TypeError:
+            pass
+        else:
+            self.fail("new-style class must have a new-style base")
+
+    def test_mutable_bases_with_failing_mro(self):
+        # Testing mutable bases with failing mro...
+        class WorkOnce(type):
+            def __new__(self, name, bases, ns):
+                self.flag = 0
+                return super(WorkOnce, self).__new__(WorkOnce, name, bases, ns)
+            def mro(self):
+                if self.flag > 0:
+                    raise RuntimeError, "bozo"
+                else:
+                    self.flag += 1
+                    return type.mro(self)
+
+        class WorkAlways(type):
+            def mro(self):
+                # this is here to make sure that .mro()s aren't called
+                # with an exception set (which was possible at one point).
+                # An error message will be printed in a debug build.
+                # What's a good way to test for this?
                 return type.mro(self)
 
-    class WorkAlways(type):
-        def mro(self):
-            # this is here to make sure that .mro()s aren't called
-            # with an exception set (which was possible at one point).
-            # An error message will be printed in a debug build.
-            # What's a good way to test for this?
-            return type.mro(self)
+        class C(object):
+            pass
 
-    class C(object):
-        pass
+        class C2(object):
+            pass
 
-    class C2(object):
-        pass
+        class D(C):
+            pass
 
-    class D(C):
-        pass
+        class E(D):
+            pass
 
-    class E(D):
-        pass
+        class F(D):
+            __metaclass__ = WorkOnce
 
-    class F(D):
-        __metaclass__ = WorkOnce
+        class G(D):
+            __metaclass__ = WorkAlways
 
-    class G(D):
-        __metaclass__ = WorkAlways
+        # Immediate subclasses have their mro's adjusted in alphabetical
+        # order, so E's will get adjusted before adjusting F's fails.  We
+        # check here that E's gets restored.
 
-    # Immediate subclasses have their mro's adjusted in alphabetical
-    # order, so E's will get adjusted before adjusting F's fails.  We
-    # check here that E's gets restored.
-
-    E_mro_before = E.__mro__
-    D_mro_before = D.__mro__
-
-    try:
-        D.__bases__ = (C2,)
-    except RuntimeError:
-        vereq(E.__mro__, E_mro_before)
-        vereq(D.__mro__, D_mro_before)
-    else:
-        raise TestFailed, "exception not propagated"
-
-def test_mutable_bases_catch_mro_conflict():
-    if verbose:
-        print "Testing mutable bases catch mro conflict..."
-    class A(object):
-        pass
-
-    class B(object):
-        pass
-
-    class C(A, B):
-        pass
-
-    class D(A, B):
-        pass
-
-    class E(C, D):
-        pass
-
-    try:
-        C.__bases__ = (B, A)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "didn't catch MRO conflict"
-
-def mutable_names():
-    if verbose:
-        print "Testing mutable names..."
-    class C(object):
-        pass
-
-    # C.__module__ could be 'test_descr' or '__main__'
-    mod = C.__module__
-
-    C.__name__ = 'D'
-    vereq((C.__module__, C.__name__), (mod, 'D'))
-
-    C.__name__ = 'D.E'
-    vereq((C.__module__, C.__name__), (mod, 'D.E'))
-
-def subclass_right_op():
-    if verbose:
-        print "Testing correct dispatch of subclass overloading __r<op>__..."
-
-    # This code tests various cases where right-dispatch of a subclass
-    # should be preferred over left-dispatch of a base class.
-
-    # Case 1: subclass of int; this tests code in abstract.c::binary_op1()
-
-    class B(int):
-        def __floordiv__(self, other):
-            return "B.__floordiv__"
-        def __rfloordiv__(self, other):
-            return "B.__rfloordiv__"
-
-    vereq(B(1) // 1, "B.__floordiv__")
-    vereq(1 // B(1), "B.__rfloordiv__")
-
-    # Case 2: subclass of object; this is just the baseline for case 3
-
-    class C(object):
-        def __floordiv__(self, other):
-            return "C.__floordiv__"
-        def __rfloordiv__(self, other):
-            return "C.__rfloordiv__"
-
-    vereq(C() // 1, "C.__floordiv__")
-    vereq(1 // C(), "C.__rfloordiv__")
-
-    # Case 3: subclass of new-style class; here it gets interesting
-
-    class D(C):
-        def __floordiv__(self, other):
-            return "D.__floordiv__"
-        def __rfloordiv__(self, other):
-            return "D.__rfloordiv__"
-
-    vereq(D() // C(), "D.__floordiv__")
-    vereq(C() // D(), "D.__rfloordiv__")
-
-    # Case 4: this didn't work right in 2.2.2 and 2.3a1
-
-    class E(C):
-        pass
-
-    vereq(E.__rfloordiv__, C.__rfloordiv__)
-
-    vereq(E() // 1, "C.__floordiv__")
-    vereq(1 // E(), "C.__rfloordiv__")
-    vereq(E() // C(), "C.__floordiv__")
-    vereq(C() // E(), "C.__floordiv__") # This one would fail
-
-def dict_type_with_metaclass():
-    if verbose:
-        print "Testing type of __dict__ when __metaclass__ set..."
-
-    class B(object):
-        pass
-    class M(type):
-        pass
-    class C:
-        # In 2.3a1, C.__dict__ was a real dict rather than a dict proxy
-        __metaclass__ = M
-    veris(type(C.__dict__), type(B.__dict__))
-
-def meth_class_get():
-    # Full coverage of descrobject.c::classmethod_get()
-    if verbose:
-        print "Testing __get__ method of METH_CLASS C methods..."
-    # Baseline
-    arg = [1, 2, 3]
-    res = {1: None, 2: None, 3: None}
-    vereq(dict.fromkeys(arg), res)
-    vereq({}.fromkeys(arg), res)
-    # Now get the descriptor
-    descr = dict.__dict__["fromkeys"]
-    # More baseline using the descriptor directly
-    vereq(descr.__get__(None, dict)(arg), res)
-    vereq(descr.__get__({})(arg), res)
-    # Now check various error cases
-    try:
-        descr.__get__(None, None)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "shouldn't have allowed descr.__get__(None, None)"
-    try:
-        descr.__get__(42)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "shouldn't have allowed descr.__get__(42)"
-    try:
-        descr.__get__(None, 42)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "shouldn't have allowed descr.__get__(None, 42)"
-    try:
-        descr.__get__(None, int)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "shouldn't have allowed descr.__get__(None, int)"
-
-def isinst_isclass():
-    if verbose:
-        print "Testing proxy isinstance() and isclass()..."
-    class Proxy(object):
-        def __init__(self, obj):
-            self.__obj = obj
-        def __getattribute__(self, name):
-            if name.startswith("_Proxy__"):
-                return object.__getattribute__(self, name)
-            else:
-                return getattr(self.__obj, name)
-    # Test with a classic class
-    class C:
-        pass
-    a = C()
-    pa = Proxy(a)
-    verify(isinstance(a, C))  # Baseline
-    verify(isinstance(pa, C)) # Test
-    # Test with a classic subclass
-    class D(C):
-        pass
-    a = D()
-    pa = Proxy(a)
-    verify(isinstance(a, C))  # Baseline
-    verify(isinstance(pa, C)) # Test
-    # Test with a new-style class
-    class C(object):
-        pass
-    a = C()
-    pa = Proxy(a)
-    verify(isinstance(a, C))  # Baseline
-    verify(isinstance(pa, C)) # Test
-    # Test with a new-style subclass
-    class D(C):
-        pass
-    a = D()
-    pa = Proxy(a)
-    verify(isinstance(a, C))  # Baseline
-    verify(isinstance(pa, C)) # Test
-
-def proxysuper():
-    if verbose:
-        print "Testing super() for a proxy object..."
-    class Proxy(object):
-        def __init__(self, obj):
-            self.__obj = obj
-        def __getattribute__(self, name):
-            if name.startswith("_Proxy__"):
-                return object.__getattribute__(self, name)
-            else:
-                return getattr(self.__obj, name)
-
-    class B(object):
-        def f(self):
-            return "B.f"
-
-    class C(B):
-        def f(self):
-            return super(C, self).f() + "->C.f"
-
-    obj = C()
-    p = Proxy(obj)
-    vereq(C.__dict__["f"](p), "B.f->C.f")
-
-def carloverre():
-    if verbose:
-        print "Testing prohibition of Carlo Verre's hack..."
-    try:
-        object.__setattr__(str, "foo", 42)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "Carlo Verre __setattr__ suceeded!"
-    try:
-        object.__delattr__(str, "lower")
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "Carlo Verre __delattr__ succeeded!"
-
-def weakref_segfault():
-    # SF 742911
-    if verbose:
-        print "Testing weakref segfault..."
-
-    import weakref
-
-    class Provoker:
-        def __init__(self, referrent):
-            self.ref = weakref.ref(referrent)
-
-        def __del__(self):
-            x = self.ref()
-
-    class Oops(object):
-        pass
-
-    o = Oops()
-    o.whatever = Provoker(o)
-    del o
-
-def wrapper_segfault():
-    # SF 927248: deeply nested wrappers could cause stack overflow
-    f = lambda:None
-    for i in xrange(1000000):
-        f = f.__call__
-    f = None
-
-# Fix SF #762455, segfault when sys.stdout is changed in getattr
-def filefault():
-    if verbose:
-        print "Testing sys.stdout is changed in getattr..."
-    import sys
-    class StdoutGuard:
-        def __getattr__(self, attr):
-            sys.stdout = sys.__stdout__
-            raise RuntimeError("Premature access to sys.stdout.%s" % attr)
-    sys.stdout = StdoutGuard()
-    try:
-        print "Oops!"
-    except RuntimeError:
-        pass
-
-def vicious_descriptor_nonsense():
-    # A potential segfault spotted by Thomas Wouters in mail to
-    # python-dev 2003-04-17, turned into an example & fixed by Michael
-    # Hudson just less than four months later...
-    if verbose:
-        print "Testing vicious_descriptor_nonsense..."
-
-    class Evil(object):
-        def __hash__(self):
-            return hash('attr')
-        def __eq__(self, other):
-            del C.attr
-            return 0
-
-    class Descr(object):
-        def __get__(self, ob, type=None):
-            return 1
-
-    class C(object):
-        attr = Descr()
-
-    c = C()
-    c.__dict__[Evil()] = 0
-
-    vereq(c.attr, 1)
-    # this makes a crash more likely:
-    import gc; gc.collect()
-    vereq(hasattr(c, 'attr'), False)
-
-def test_init():
-    # SF 1155938
-    class Foo(object):
-        def __init__(self):
-            return 10
-    try:
-        Foo()
-    except TypeError:
-        pass
-    else:
-        raise TestFailed, "did not test __init__() for None return"
-
-def methodwrapper():
-    # <type 'method-wrapper'> did not support any reflection before 2.5
-    if verbose:
-        print "Testing method-wrapper objects..."
-
-    l = []
-    vereq(l.__add__, l.__add__)
-    vereq(l.__add__, [].__add__)
-    verify(l.__add__ != [5].__add__)
-    verify(l.__add__ != l.__mul__)
-    verify(l.__add__.__name__ == '__add__')
-    verify(l.__add__.__self__ is l)
-    verify(l.__add__.__objclass__ is list)
-    vereq(l.__add__.__doc__, list.__add__.__doc__)
-    try:
-        hash(l.__add__)
-    except TypeError:
-        pass
-    else:
-        raise TestFailed("no TypeError from hash([].__add__)")
-
-    t = ()
-    t += (7,)
-    vereq(t.__add__, (7,).__add__)
-    vereq(hash(t.__add__), hash((7,).__add__))
-
-def notimplemented():
-    # all binary methods should be able to return a NotImplemented
-    if verbose:
-        print "Testing NotImplemented..."
-
-    import sys
-    import types
-    import operator
-
-    def specialmethod(self, other):
-        return NotImplemented
+        E_mro_before = E.__mro__
+        D_mro_before = D.__mro__
 
-    def check(expr, x, y):
         try:
-            exec expr in {'x': x, 'y': y, 'operator': operator}
+            D.__bases__ = (C2,)
+        except RuntimeError:
+            self.assertEqual(E.__mro__, E_mro_before)
+            self.assertEqual(D.__mro__, D_mro_before)
+        else:
+            self.fail("exception not propagated")
+
+    def test_mutable_bases_catch_mro_conflict(self):
+        # Testing mutable bases catch mro conflict...
+        class A(object):
+            pass
+
+        class B(object):
+            pass
+
+        class C(A, B):
+            pass
+
+        class D(A, B):
+            pass
+
+        class E(C, D):
+            pass
+
+        try:
+            C.__bases__ = (B, A)
         except TypeError:
             pass
         else:
-            raise TestFailed("no TypeError from %r" % (expr,))
+            self.fail("didn't catch MRO conflict")
 
-    N1 = sys.maxint + 1L    # might trigger OverflowErrors instead of TypeErrors
-    N2 = sys.maxint         # if sizeof(int) < sizeof(long), might trigger
-                            #   ValueErrors instead of TypeErrors
-    for metaclass in [type, types.ClassType]:
-        for name, expr, iexpr in [
-                ('__add__',      'x + y',                   'x += y'),
-                ('__sub__',      'x - y',                   'x -= y'),
-                ('__mul__',      'x * y',                   'x *= y'),
-                ('__truediv__',  'operator.truediv(x, y)',  None),
-                ('__floordiv__', 'operator.floordiv(x, y)', None),
-                ('__div__',      'x / y',                   'x /= y'),
-                ('__mod__',      'x % y',                   'x %= y'),
-                ('__divmod__',   'divmod(x, y)',            None),
-                ('__pow__',      'x ** y',                  'x **= y'),
-                ('__lshift__',   'x << y',                  'x <<= y'),
-                ('__rshift__',   'x >> y',                  'x >>= y'),
-                ('__and__',      'x & y',                   'x &= y'),
-                ('__or__',       'x | y',                   'x |= y'),
-                ('__xor__',      'x ^ y',                   'x ^= y'),
-                ('__coerce__',   'coerce(x, y)',            None)]:
-            if name == '__coerce__':
-                rname = name
+    def test_mutable_names(self):
+        # Testing mutable names...
+        class C(object):
+            pass
+
+        # C.__module__ could be 'test_descr' or '__main__'
+        mod = C.__module__
+
+        C.__name__ = 'D'
+        self.assertEqual((C.__module__, C.__name__), (mod, 'D'))
+
+        C.__name__ = 'D.E'
+        self.assertEqual((C.__module__, C.__name__), (mod, 'D.E'))
+
+    def test_subclass_right_op(self):
+        # Testing correct dispatch of subclass overloading __r<op>__...
+
+        # This code tests various cases where right-dispatch of a subclass
+        # should be preferred over left-dispatch of a base class.
+
+        # Case 1: subclass of int; this tests code in abstract.c::binary_op1()
+
+        class B(int):
+            def __floordiv__(self, other):
+                return "B.__floordiv__"
+            def __rfloordiv__(self, other):
+                return "B.__rfloordiv__"
+
+        self.assertEqual(B(1) // 1, "B.__floordiv__")
+        self.assertEqual(1 // B(1), "B.__rfloordiv__")
+
+        # Case 2: subclass of object; this is just the baseline for case 3
+
+        class C(object):
+            def __floordiv__(self, other):
+                return "C.__floordiv__"
+            def __rfloordiv__(self, other):
+                return "C.__rfloordiv__"
+
+        self.assertEqual(C() // 1, "C.__floordiv__")
+        self.assertEqual(1 // C(), "C.__rfloordiv__")
+
+        # Case 3: subclass of new-style class; here it gets interesting
+
+        class D(C):
+            def __floordiv__(self, other):
+                return "D.__floordiv__"
+            def __rfloordiv__(self, other):
+                return "D.__rfloordiv__"
+
+        self.assertEqual(D() // C(), "D.__floordiv__")
+        self.assertEqual(C() // D(), "D.__rfloordiv__")
+
+        # Case 4: this didn't work right in 2.2.2 and 2.3a1
+
+        class E(C):
+            pass
+
+        self.assertEqual(E.__rfloordiv__, C.__rfloordiv__)
+
+        self.assertEqual(E() // 1, "C.__floordiv__")
+        self.assertEqual(1 // E(), "C.__rfloordiv__")
+        self.assertEqual(E() // C(), "C.__floordiv__")
+        self.assertEqual(C() // E(), "C.__floordiv__") # This one would fail
+
+    def test_meth_class_get(self):
+        # Testing __get__ method of METH_CLASS C methods...
+        # Full coverage of descrobject.c::classmethod_get()
+
+        # Baseline
+        arg = [1, 2, 3]
+        res = {1: None, 2: None, 3: None}
+        self.assertEqual(dict.fromkeys(arg), res)
+        self.assertEqual({}.fromkeys(arg), res)
+
+        # Now get the descriptor
+        descr = dict.__dict__["fromkeys"]
+
+        # More baseline using the descriptor directly
+        self.assertEqual(descr.__get__(None, dict)(arg), res)
+        self.assertEqual(descr.__get__({})(arg), res)
+
+        # Now check various error cases
+        try:
+            descr.__get__(None, None)
+        except TypeError:
+            pass
+        else:
+            self.fail("shouldn't have allowed descr.__get__(None, None)")
+        try:
+            descr.__get__(42)
+        except TypeError:
+            pass
+        else:
+            self.fail("shouldn't have allowed descr.__get__(42)")
+        try:
+            descr.__get__(None, 42)
+        except TypeError:
+            pass
+        else:
+            self.fail("shouldn't have allowed descr.__get__(None, 42)")
+        try:
+            descr.__get__(None, int)
+        except TypeError:
+            pass
+        else:
+            self.fail("shouldn't have allowed descr.__get__(None, int)")
+
+    def test_isinst_isclass(self):
+        # Testing proxy isinstance() and isclass()...
+        class Proxy(object):
+            def __init__(self, obj):
+                self.__obj = obj
+            def __getattribute__(self, name):
+                if name.startswith("_Proxy__"):
+                    return object.__getattribute__(self, name)
+                else:
+                    return getattr(self.__obj, name)
+        # Test with a classic class
+        class C:
+            pass
+        a = C()
+        pa = Proxy(a)
+        self.assert_(isinstance(a, C))  # Baseline
+        self.assert_(isinstance(pa, C)) # Test
+        # Test with a classic subclass
+        class D(C):
+            pass
+        a = D()
+        pa = Proxy(a)
+        self.assert_(isinstance(a, C))  # Baseline
+        self.assert_(isinstance(pa, C)) # Test
+        # Test with a new-style class
+        class C(object):
+            pass
+        a = C()
+        pa = Proxy(a)
+        self.assert_(isinstance(a, C))  # Baseline
+        self.assert_(isinstance(pa, C)) # Test
+        # Test with a new-style subclass
+        class D(C):
+            pass
+        a = D()
+        pa = Proxy(a)
+        self.assert_(isinstance(a, C))  # Baseline
+        self.assert_(isinstance(pa, C)) # Test
+
+    def test_proxy_super(self):
+        # Testing super() for a proxy object...
+        class Proxy(object):
+            def __init__(self, obj):
+                self.__obj = obj
+            def __getattribute__(self, name):
+                if name.startswith("_Proxy__"):
+                    return object.__getattribute__(self, name)
+                else:
+                    return getattr(self.__obj, name)
+
+        class B(object):
+            def f(self):
+                return "B.f"
+
+        class C(B):
+            def f(self):
+                return super(C, self).f() + "->C.f"
+
+        obj = C()
+        p = Proxy(obj)
+        self.assertEqual(C.__dict__["f"](p), "B.f->C.f")
+
+    def test_carloverre(self):
+        # Testing prohibition of Carlo Verre's hack...
+        try:
+            object.__setattr__(str, "foo", 42)
+        except TypeError:
+            pass
+        else:
+            self.fail("Carlo Verre __setattr__ suceeded!")
+        try:
+            object.__delattr__(str, "lower")
+        except TypeError:
+            pass
+        else:
+            self.fail("Carlo Verre __delattr__ succeeded!")
+
+    def test_weakref_segfault(self):
+        # Testing weakref segfault...
+        # SF 742911
+        import weakref
+
+        class Provoker:
+            def __init__(self, referrent):
+                self.ref = weakref.ref(referrent)
+
+            def __del__(self):
+                x = self.ref()
+
+        class Oops(object):
+            pass
+
+        o = Oops()
+        o.whatever = Provoker(o)
+        del o
+
+    def test_wrapper_segfault(self):
+        # SF 927248: deeply nested wrappers could cause stack overflow
+        f = lambda:None
+        for i in xrange(1000000):
+            f = f.__call__
+        f = None
+
+    def test_file_fault(self):
+        # Testing sys.stdout is changed in getattr...
+        import sys
+        class StdoutGuard:
+            def __getattr__(self, attr):
+                sys.stdout = sys.__stdout__
+                raise RuntimeError("Premature access to sys.stdout.%s" % attr)
+        sys.stdout = StdoutGuard()
+        try:
+            print "Oops!"
+        except RuntimeError:
+            pass
+
+    def test_vicious_descriptor_nonsense(self):
+        # Testing vicious_descriptor_nonsense...
+
+        # A potential segfault spotted by Thomas Wouters in mail to
+        # python-dev 2003-04-17, turned into an example & fixed by Michael
+        # Hudson just less than four months later...
+
+        class Evil(object):
+            def __hash__(self):
+                return hash('attr')
+            def __eq__(self, other):
+                del C.attr
+                return 0
+
+        class Descr(object):
+            def __get__(self, ob, type=None):
+                return 1
+
+        class C(object):
+            attr = Descr()
+
+        c = C()
+        c.__dict__[Evil()] = 0
+
+        self.assertEqual(c.attr, 1)
+        # this makes a crash more likely:
+        import gc; gc.collect()
+        self.assertEqual(hasattr(c, 'attr'), False)
+
+    def test_init(self):
+        # SF 1155938
+        class Foo(object):
+            def __init__(self):
+                return 10
+        try:
+            Foo()
+        except TypeError:
+            pass
+        else:
+            self.fail("did not test __init__() for None return")
+
+    def test_method_wrapper(self):
+        # Testing method-wrapper objects...
+        # <type 'method-wrapper'> did not support any reflection before 2.5
+
+        l = []
+        self.assertEqual(l.__add__, l.__add__)
+        self.assertEqual(l.__add__, [].__add__)
+        self.assert_(l.__add__ != [5].__add__)
+        self.assert_(l.__add__ != l.__mul__)
+        self.assert_(l.__add__.__name__ == '__add__')
+        self.assert_(l.__add__.__self__ is l)
+        self.assert_(l.__add__.__objclass__ is list)
+        self.assertEqual(l.__add__.__doc__, list.__add__.__doc__)
+        try:
+            hash(l.__add__)
+        except TypeError:
+            pass
+        else:
+            self.fail("no TypeError from hash([].__add__)")
+
+        t = ()
+        t += (7,)
+        self.assertEqual(t.__add__, (7,).__add__)
+        self.assertEqual(hash(t.__add__), hash((7,).__add__))
+
+    def test_not_implemented(self):
+        # Testing NotImplemented...
+        # all binary methods should be able to return a NotImplemented
+        import sys
+        import types
+        import operator
+
+        def specialmethod(self, other):
+            return NotImplemented
+
+        def check(expr, x, y):
+            try:
+                exec expr in {'x': x, 'y': y, 'operator': operator}
+            except TypeError:
+                pass
             else:
-                rname = '__r' + name[2:]
-            A = metaclass('A', (), {name: specialmethod})
-            B = metaclass('B', (), {rname: specialmethod})
-            a = A()
-            b = B()
-            check(expr, a, a)
-            check(expr, a, b)
-            check(expr, b, a)
-            check(expr, b, b)
-            check(expr, a, N1)
-            check(expr, a, N2)
-            check(expr, N1, b)
-            check(expr, N2, b)
-            if iexpr:
-                check(iexpr, a, a)
-                check(iexpr, a, b)
-                check(iexpr, b, a)
-                check(iexpr, b, b)
-                check(iexpr, a, N1)
-                check(iexpr, a, N2)
-                iname = '__i' + name[2:]
-                C = metaclass('C', (), {iname: specialmethod})
-                c = C()
-                check(iexpr, c, a)
-                check(iexpr, c, b)
-                check(iexpr, c, N1)
-                check(iexpr, c, N2)
+                self.fail("no TypeError from %r" % (expr,))
 
-def test_assign_slice():
-    # ceval.c's assign_slice used to check for
-    # tp->tp_as_sequence->sq_slice instead of
-    # tp->tp_as_sequence->sq_ass_slice
-    if verbose:
-        print "Testing assign_slice..."
+        N1 = sys.maxint + 1L    # might trigger OverflowErrors instead of
+                                # TypeErrors
+        N2 = sys.maxint         # if sizeof(int) < sizeof(long), might trigger
+                                #   ValueErrors instead of TypeErrors
+        for metaclass in [type, types.ClassType]:
+            for name, expr, iexpr in [
+                    ('__add__',      'x + y',                   'x += y'),
+                    ('__sub__',      'x - y',                   'x -= y'),
+                    ('__mul__',      'x * y',                   'x *= y'),
+                    ('__truediv__',  'operator.truediv(x, y)',  None),
+                    ('__floordiv__', 'operator.floordiv(x, y)', None),
+                    ('__div__',      'x / y',                   'x /= y'),
+                    ('__mod__',      'x % y',                   'x %= y'),
+                    ('__divmod__',   'divmod(x, y)',            None),
+                    ('__pow__',      'x ** y',                  'x **= y'),
+                    ('__lshift__',   'x << y',                  'x <<= y'),
+                    ('__rshift__',   'x >> y',                  'x >>= y'),
+                    ('__and__',      'x & y',                   'x &= y'),
+                    ('__or__',       'x | y',                   'x |= y'),
+                    ('__xor__',      'x ^ y',                   'x ^= y'),
+                    ('__coerce__',   'coerce(x, y)',            None)]:
+                if name == '__coerce__':
+                    rname = name
+                else:
+                    rname = '__r' + name[2:]
+                A = metaclass('A', (), {name: specialmethod})
+                B = metaclass('B', (), {rname: specialmethod})
+                a = A()
+                b = B()
+                check(expr, a, a)
+                check(expr, a, b)
+                check(expr, b, a)
+                check(expr, b, b)
+                check(expr, a, N1)
+                check(expr, a, N2)
+                check(expr, N1, b)
+                check(expr, N2, b)
+                if iexpr:
+                    check(iexpr, a, a)
+                    check(iexpr, a, b)
+                    check(iexpr, b, a)
+                    check(iexpr, b, b)
+                    check(iexpr, a, N1)
+                    check(iexpr, a, N2)
+                    iname = '__i' + name[2:]
+                    C = metaclass('C', (), {iname: specialmethod})
+                    c = C()
+                    check(iexpr, c, a)
+                    check(iexpr, c, b)
+                    check(iexpr, c, N1)
+                    check(iexpr, c, N2)
 
-    class C(object):
-        def __setslice__(self, start, stop, value):
-            self.value = value
+    def test_assign_slice(self):
+        # ceval.c's assign_slice used to check for
+        # tp->tp_as_sequence->sq_slice instead of
+        # tp->tp_as_sequence->sq_ass_slice
 
-    c = C()
-    c[1:2] = 3
-    vereq(c.value, 3)
+        class C(object):
+            def __setslice__(self, start, stop, value):
+                self.value = value
 
-def test_weakref_in_del_segfault():
-    # This used to segfault until r60057
-    if verbose:
-        print "Testing weakref in del segfault..."
+        c = C()
+        c[1:2] = 3
+        self.assertEqual(c.value, 3)
 
-    import weakref
-    global ref
 
-    class Target():
-        def __del__(self):
-            global ref
-            ref = weakref.ref(self)
+class DictProxyTests(unittest.TestCase):
+    def setUp(self):
+        class C(object):
+            def meth(self):
+                pass
+        self.C = C
 
-    w = Target()
-    del w
-    del ref
+    def test_iter_keys(self):
+        # Testing dict-proxy iterkeys...
+        keys = [ key for key in self.C.__dict__.iterkeys() ]
+        keys.sort()
+        self.assertEquals(keys, ['__dict__', '__doc__', '__module__',
+            '__weakref__', 'meth'])
 
-def test_borrowed_ref_3_segfault():
-    # This used to segfault until r60224
-    if verbose:
-        print "Testing borrowed ref 3 segfault..."
+    def test_iter_values(self):
+        # Testing dict-proxy itervalues...
+        values = [ values for values in self.C.__dict__.itervalues() ]
+        self.assertEqual(len(values), 5)
 
-    class KeyFunc(object):
-        def __call__(self, n):
-            del d['key']
-            return 1
+    def test_iter_items(self):
+        # Testing dict-proxy iteritems...
+        keys = [ key for (key, value) in self.C.__dict__.iteritems() ]
+        keys.sort()
+        self.assertEqual(keys, ['__dict__', '__doc__', '__module__',
+            '__weakref__', 'meth'])
 
-    d = {'key': KeyFunc()}
-    try:
-        min(range(10), **d)
-    except:
-        pass
+    def test_dict_type_with_metaclass(self):
+        # Testing type of __dict__ when __metaclass__ set...
+        class B(object):
+            pass
+        class M(type):
+            pass
+        class C:
+            # In 2.3a1, C.__dict__ was a real dict rather than a dict proxy
+            __metaclass__ = M
+        self.assertEqual(type(C.__dict__), type(B.__dict__))
 
-def test_borrowed_ref_4_segfault():
-    # This used to segfault until r60224
-    if verbose:
-        print "Testing borrowed ref 4 segfault..."
 
-    import types
-    import __builtin__
+class PTypesLongInitTest(unittest.TestCase):
+    # This is in its own TestCase so that it can be run before any other tests.
+    def test_pytype_long_ready(self):
+        # Testing SF bug 551412 ...
 
-    class X(object):
-        def __getattr__(self, name):
-            # this is called with name == '__bases__' by PyObject_IsInstance()
-            # during the unbound method call -- it frees the unbound method
-            # itself before it invokes its im_func.
-            del __builtin__.__import__
-            return ()
+        # This dumps core when SF bug 551412 isn't fixed --
+        # but only when test_descr.py is run separately.
+        # (That can't be helped -- as soon as PyType_Ready()
+        # is called for PyLong_Type, the bug is gone.)
+        class UserLong(object):
+            def __pow__(self, *args):
+                pass
+        try:
+            pow(0L, UserLong(), 0L)
+        except:
+            pass
 
-    pseudoclass = X()
-
-    class Y(object):
-        def __call__(self, *args):
-            # 'self' was freed already
-            return (self, args)
-
-    # make an unbound method
-    orig_import = __import__
-    try:
-        __builtin__.__import__ = types.MethodType(Y(), None, (pseudoclass, str))
-        import spam
-    finally:
-        __builtin__.__import__ = orig_import
-
-def test_losing_dict_ref_segfault():
-    # This used to segfault;
-    # derived from issue #1303614, test67.py
-    if verbose:
-        print "Testing losing dict ref segfault..."
-
-    class Strange(object):
-        def __hash__(self):
-            return hash('hello')
-
-        def __eq__(self, other):
-            x.__dict__ = {}   # the old x.__dict__ is deallocated
-            return False
-
-    class X(object):
-        pass
-
-    v = 123
-    x = X()
-    x.__dict__ = {Strange(): 42, 'hello': v+456}
-    x.hello
+        # Another segfault only when run early
+        # (before PyType_Ready(tuple) is called)
+        type.mro(tuple)
 
 
 def test_main():
-    weakref_segfault() # Must be first, somehow
-    wrapper_segfault()
-    do_this_first()
-    class_docstrings()
-    lists()
-    dicts()
-    dict_constructor()
-    test_dir()
-    ints()
-    longs()
-    floats()
-    complexes()
-    spamlists()
-    spamdicts()
-    pydicts()
-    pylists()
-    metaclass()
-    pymods()
-    multi()
-    mro_disagreement()
-    diamond()
-    ex5()
-    monotonicity()
-    consistency_with_epg()
-    objects()
-    slots()
-    slotspecials()
-    dynamics()
-    errors()
-    classmethods()
-    classmethods_in_c()
-    staticmethods()
-    staticmethods_in_c()
-    classic()
-    compattr()
-    newslot()
-    altmro()
-    overloading()
-    methods()
-    specials()
-    recursions()
-    weakrefs()
-    properties()
-    properties_plus()
-    supers()
-    inherits()
-    keywords()
-    restricted()
-    str_subclass_as_dict_key()
-    classic_comparisons()
-    rich_comparisons()
-    coercions()
-    descrdoc()
-    setclass()
-    setdict()
-    pickles()
-    copies()
-    binopoverride()
-    subclasspropagation()
-    buffer_inherit()
-    str_of_str_subclass()
-    kwdargs()
-    recursive__call__()
-    delhook()
-    hashinherit()
-    strops()
-    deepcopyrecursive()
-    modules()
-    dictproxyiterkeys()
-    dictproxyitervalues()
-    dictproxyiteritems()
-    pickleslots()
-    funnynew()
-    imulbug()
-    docdescriptor()
-    copy_setstate()
-    slices()
-    subtype_resurrection()
-    slottrash()
-    slotmultipleinheritance()
-    testrmul()
-    testipow()
-    test_mutable_bases()
-    test_mutable_bases_with_failing_mro()
-    test_mutable_bases_catch_mro_conflict()
-    mutable_names()
-    subclass_right_op()
-    dict_type_with_metaclass()
-    meth_class_get()
-    isinst_isclass()
-    proxysuper()
-    carloverre()
-    filefault()
-    vicious_descriptor_nonsense()
-    test_init()
-    methodwrapper()
-    notimplemented()
-    test_assign_slice()
-    test_weakref_in_del_segfault()
-    test_borrowed_ref_3_segfault()
-    test_borrowed_ref_4_segfault()
-    test_losing_dict_ref_segfault()
-
-    if verbose: print "All OK"
+    # Run all local test cases, with PTypesLongInitTest first.
+    test_support.run_unittest(PTypesLongInitTest, OperatorsTest,
+                              ClassPropertiesAndMethods, DictProxyTests)
 
 if __name__ == "__main__":
     test_main()