| # Test descriptor-related enhancements |
| |
| from test_support import verify, verbose, TestFailed |
| from copy import deepcopy |
| |
| def testunop(a, res, expr="len(a)", meth="__len__"): |
| if verbose: print "checking", expr |
| dict = {'a': a} |
| verify(eval(expr, dict) == res) |
| t = type(a) |
| m = getattr(t, meth) |
| verify(m == t.__dict__[meth]) |
| verify(m(a) == res) |
| bm = getattr(a, meth) |
| verify(bm() == res) |
| |
| def testbinop(a, b, res, expr="a+b", meth="__add__"): |
| if verbose: print "checking", expr |
| dict = {'a': a, 'b': b} |
| verify(eval(expr, dict) == res) |
| t = type(a) |
| m = getattr(t, meth) |
| verify(m == t.__dict__[meth]) |
| verify(m(a, b) == res) |
| bm = getattr(a, meth) |
| verify(bm(b) == res) |
| |
| def testternop(a, b, c, res, expr="a[b:c]", meth="__getslice__"): |
| if verbose: print "checking", expr |
| dict = {'a': a, 'b': b, 'c': c} |
| verify(eval(expr, dict) == res) |
| t = type(a) |
| m = getattr(t, meth) |
| verify(m == t.__dict__[meth]) |
| verify(m(a, b, c) == res) |
| bm = getattr(a, meth) |
| verify(bm(b, c) == res) |
| |
| 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 |
| verify(dict['a'] == res) |
| t = type(a) |
| m = getattr(t, meth) |
| verify(m == t.__dict__[meth]) |
| dict['a'] = deepcopy(a) |
| m(dict['a'], b) |
| verify(dict['a'] == res) |
| dict['a'] = deepcopy(a) |
| bm = getattr(dict['a'], meth) |
| bm(b) |
| verify(dict['a'] == res) |
| |
| 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 |
| verify(dict['a'] == res) |
| t = type(a) |
| m = getattr(t, meth) |
| verify(m == t.__dict__[meth]) |
| dict['a'] = deepcopy(a) |
| m(dict['a'], b, c) |
| verify(dict['a'] == res) |
| dict['a'] = deepcopy(a) |
| bm = getattr(dict['a'], meth) |
| bm(b, c) |
| verify(dict['a'] == res) |
| |
| 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 |
| verify(dict['a'] == res) |
| t = type(a) |
| m = getattr(t, meth) |
| verify(m == t.__dict__[meth]) |
| dict['a'] = deepcopy(a) |
| m(dict['a'], b, c, d) |
| verify(dict['a'] == res) |
| dict['a'] = deepcopy(a) |
| bm = getattr(dict['a'], meth) |
| bm(b, c, d) |
| verify(dict['a'] == 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 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) |
| verify(l == l1) |
| l = [] |
| for i in d.__iter__(): l.append(i) |
| verify(l == l1) |
| l = [] |
| for i in dictionary.__iter__(d): l.append(i) |
| verify(l == l1) |
| d = {1:2, 3:4} |
| testunop(d, 2, "len(a)", "__len__") |
| verify(eval(repr(d), {}) == d) |
| verify(eval(d.__repr__(), {}) == d) |
| testset2op({1:2,3:4}, 2, 3, {1:2,2:3,3:4}, "a[b]=c", "__setitem__") |
| |
| def dict_constructor(): |
| if verbose: |
| print "Testing dictionary constructor ..." |
| d = dictionary() |
| verify(d == {}) |
| d = dictionary({}) |
| verify(d == {}) |
| d = dictionary(mapping={}) |
| verify(d == {}) |
| d = dictionary({1: 2, 'a': 'b'}) |
| verify(d == {1: 2, 'a': 'b'}) |
| for badarg in 0, 0L, 0j, "0", [0], (0,): |
| try: |
| dictionary(badarg) |
| except TypeError: |
| pass |
| else: |
| raise TestFailed("no TypeError from dictionary(%r)" % badarg) |
| try: |
| dictionary(senseless={}) |
| except TypeError: |
| pass |
| else: |
| raise TestFailed("no TypeError from dictionary(senseless={}") |
| |
| try: |
| dictionary({}, {}) |
| except TypeError: |
| pass |
| else: |
| raise TestFailed("no TypeError from dictionary({}, {})") |
| |
| class Mapping: |
| dict = {1:2, 3:4, 'a':1j} |
| |
| def __getitem__(self, i): |
| return self.dict[i] |
| |
| try: |
| dictionary(Mapping()) |
| except TypeError: |
| pass |
| else: |
| raise TestFailed("no TypeError from dictionary(incomplete mapping)") |
| |
| Mapping.keys = lambda self: self.dict.keys() |
| d = dictionary(mapping=Mapping()) |
| verify(d == Mapping.dict) |
| |
| def test_dir(): |
| if verbose: |
| print "Testing dir() ..." |
| junk = 12 |
| verify(dir() == ['junk']) |
| 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, test_dir: |
| dir(arg) |
| |
| # Try classic classes. |
| class C: |
| Cdata = 1 |
| def Cmethod(self): pass |
| |
| cstuff = ['Cdata', 'Cmethod', '__doc__', '__module__'] |
| verify(dir(C) == cstuff) |
| |
| c = C() # c.__doc__ is an odd thing to see here; ditto c.__module__. |
| verify(dir(c) == cstuff) |
| |
| c.cdata = 2 |
| c.cmethod = lambda self: 0 |
| verify(dir(c) == cstuff + ['cdata', 'cmethod']) |
| |
| class A(C): |
| Adata = 1 |
| def Amethod(self): pass |
| |
| astuff = ['Adata', 'Amethod'] + cstuff |
| verify(dir(A) == astuff) |
| a = A() |
| verify(dir(a) == astuff) |
| a.adata = 42 |
| a.amethod = lambda self: 3 |
| verify(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'] |
| verify(interesting(dir(C)) == cstuff) |
| |
| c = C() |
| verify(interesting(dir(c)) == cstuff) |
| |
| c.cdata = 2 |
| c.cmethod = lambda self: 0 |
| verify(interesting(dir(c)) == cstuff + ['cdata', 'cmethod']) |
| |
| class A(C): |
| Adata = 1 |
| def Amethod(self): pass |
| |
| astuff = ['Adata', 'Amethod'] + cstuff |
| verify(interesting(dir(A)) == astuff) |
| a = A() |
| verify(interesting(dir(a)) == astuff) |
| a.adata = 42 |
| a.amethod = lambda self: 3 |
| verify(interesting(dir(a)) == astuff + ['adata', 'amethod']) |
| |
| # Try a module subclass. |
| import sys |
| class M(type(sys)): |
| pass |
| minstance = M() |
| minstance.b = 2 |
| minstance.a = 1 |
| verify(dir(minstance) == ['a', 'b']) |
| |
| class M2(M): |
| def getdict(self): |
| return "Not a dict!" |
| __dict__ = property(getdict) |
| |
| m2instance = M2() |
| m2instance.b = 2 |
| m2instance.a = 1 |
| verify(m2instance.__dict__ == "Not a dict!") |
| try: |
| dir(m2instance) |
| except TypeError: |
| pass |
| |
| 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(): |
| 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) |
| |
| 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']) |
| class Number(complex): |
| __slots__ = ['prec'] |
| def __init__(self, *args, **kwds): |
| self.prec = kwds.get('prec', 12) |
| 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) |
| verify(`a` == "3.14") |
| verify(a.prec == 6) |
| |
| 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() |
| verify(a == []) |
| verify(a.foo() == 1) |
| a.append(100) |
| verify(a == [100]) |
| verify(a.getstate() == 0) |
| a.setstate(42) |
| verify(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) |
| verify(l == l1) |
| l = [] |
| for i in d.__iter__(): l.append(i) |
| verify(l == l1) |
| l = [] |
| for i in type(spamdict({})).__iter__(d): l.append(i) |
| verify(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() |
| verify(a.items() == []) |
| verify(a.foo() == 1) |
| a['foo'] = 'bar' |
| verify(a.items() == [('foo', 'bar')]) |
| verify(a.getstate() == 0) |
| a.setstate(100) |
| verify(a.getstate() == 100) |
| |
| def pydicts(): |
| if verbose: print "Testing Python subclass of dict..." |
| verify(issubclass(dictionary, dictionary)) |
| verify(isinstance({}, dictionary)) |
| d = dictionary() |
| verify(d == {}) |
| verify(d.__class__ is dictionary) |
| verify(isinstance(d, dictionary)) |
| class C(dictionary): |
| state = -1 |
| def __init__(self, *a, **kw): |
| if a: |
| assert 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): |
| assert isinstance(key, type(0)) |
| dictionary.__setitem__(self, key, value) |
| def setstate(self, state): |
| self.state = state |
| def getstate(self): |
| return self.state |
| verify(issubclass(C, dictionary)) |
| a1 = C(12) |
| verify(a1.state == 12) |
| a2 = C(foo=1, bar=2) |
| verify(a2[1] == 'foo' and a2[2] == 'bar') |
| a = C() |
| verify(a.state == -1) |
| verify(a.getstate() == -1) |
| a.setstate(0) |
| verify(a.state == 0) |
| verify(a.getstate() == 0) |
| a.setstate(10) |
| verify(a.state == 10) |
| verify(a.getstate() == 10) |
| verify(a[42] == 0) |
| a[42] = 24 |
| verify(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): |
| verify(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]) |
| verify(a[0] == 100) |
| verify(a[1] == 101) |
| verify(a[2] == 102) |
| verify(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() |
| verify(a.getstate() == 0) |
| a.setstate(10) |
| verify(a.getstate() == 10) |
| class D: |
| class __metaclass__(type): |
| def myself(cls): return cls |
| verify(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 |
| verify(C.__spam__ == 1) |
| c = C() |
| verify(c.__spam__ == 1) |
| |
| class _instance(object): |
| pass |
| class M2(object): |
| def __new__(cls, name, bases, dict): |
| self = object.__new__(cls) |
| self.name = name |
| self.bases = bases |
| self.dict = dict |
| return self |
| __new__ = staticmethod(__new__) |
| 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 |
| verify(C.name == 'C') |
| verify(C.bases == ()) |
| verify('spam' in C.dict) |
| c = C() |
| verify(c.spam() == 42) |
| |
| # More metaclass examples |
| |
| class autosuper(type): |
| # Automatically add __super to the class |
| # This trick only works for dynamic classes |
| # so we force __dynamic__ = 1 |
| def __new__(metaclass, name, bases, dict): |
| # XXX Should check that name isn't already a base class name |
| dict["__dynamic__"] = 1 |
| 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() |
| verify(D().meth() == "DCBA") |
| class E(B, C): |
| def meth(self): |
| return "E" + self.__super.meth() |
| verify(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 |
| verify(a.x == 12) |
| verify(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() |
| verify(D().x == "DCBA") |
| |
| def pymods(): |
| if verbose: print "Testing Python subclass of module..." |
| log = [] |
| import sys |
| MT = type(sys) |
| class MM(MT): |
| def __init__(self): |
| MT.__init__(self) |
| def __getattr__(self, name): |
| log.append(("getattr", name)) |
| return MT.__getattr__(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.foo = 12 |
| x = a.foo |
| del a.foo |
| verify(log == [("setattr", "foo", 12), |
| ("getattr", "foo"), |
| ("delattr", "foo")], log) |
| |
| 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() |
| verify(a.getstate() == 0) |
| a.setstate(10) |
| verify(a.getstate() == 10) |
| class D(dictionary, C): |
| def __init__(self): |
| type({}).__init__(self) |
| C.__init__(self) |
| d = D() |
| verify(d.keys() == []) |
| d["hello"] = "world" |
| verify(d.items() == [("hello", "world")]) |
| verify(d["hello"] == "world") |
| verify(d.getstate() == 0) |
| d.setstate(10) |
| verify(d.getstate() == 10) |
| verify(D.__mro__ == (D, dictionary, 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" |
| verify(Node().__int__() == 23) |
| verify(int(Node()) == 23) |
| verify(Frag().__int__() == 42) |
| verify(int(Frag()) == 42) |
| |
| def diamond(): |
| if verbose: print "Testing multiple inheritance special cases..." |
| class A(object): |
| def spam(self): return "A" |
| verify(A().spam() == "A") |
| class B(A): |
| def boo(self): return "B" |
| def spam(self): return "B" |
| verify(B().spam() == "B") |
| verify(B().boo() == "B") |
| class C(A): |
| def boo(self): return "C" |
| verify(C().spam() == "A") |
| verify(C().boo() == "C") |
| class D(B, C): pass |
| verify(D().spam() == "B") |
| verify(D().boo() == "B") |
| verify(D.__mro__ == (D, B, C, A, object)) |
| class E(C, B): pass |
| verify(E().spam() == "B") |
| verify(E().boo() == "C") |
| verify(E.__mro__ == (E, C, B, A, object)) |
| class F(D, E): pass |
| verify(F().spam() == "B") |
| verify(F().boo() == "B") |
| verify(F.__mro__ == (F, D, E, B, C, A, object)) |
| class G(E, D): pass |
| verify(G().spam() == "B") |
| verify(G().boo() == "C") |
| verify(G.__mro__ == (G, E, D, C, B, A, object)) |
| |
| def objects(): |
| if verbose: print "Testing object class..." |
| a = object() |
| verify(a.__class__ == object == type(a)) |
| 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() |
| verify(x.__dict__ is None) |
| x.foo = 1 |
| verify(x.foo == 1) |
| verify(x.__dict__ == {'foo': 1}) |
| |
| 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() |
| verify(not hasattr(x, "__dict__")) |
| verify(x.a == None) |
| x.a = 1 |
| verify(x.a == 1) |
| del x.a |
| verify(x.a == None) |
| |
| class C3(object): |
| __slots__ = ['a', 'b', 'c'] |
| x = C3() |
| verify(not hasattr(x, "__dict__")) |
| verify(x.a is None) |
| verify(x.b is None) |
| verify(x.c is None) |
| x.a = 1 |
| x.b = 2 |
| x.c = 3 |
| verify(x.a == 1) |
| verify(x.b == 2) |
| verify(x.c == 3) |
| |
| def dynamics(): |
| if verbose: print "Testing __dynamic__..." |
| verify(object.__dynamic__ == 0) |
| verify(list.__dynamic__ == 0) |
| class S1: |
| __metaclass__ = type |
| verify(S1.__dynamic__ == 0) |
| class S(object): |
| pass |
| verify(S.__dynamic__ == 0) |
| class D(object): |
| __dynamic__ = 1 |
| verify(D.__dynamic__ == 1) |
| class E(D, S): |
| pass |
| verify(E.__dynamic__ == 1) |
| class F(S, D): |
| pass |
| verify(F.__dynamic__ == 1) |
| try: |
| S.foo = 1 |
| except (AttributeError, TypeError): |
| pass |
| else: |
| verify(0, "assignment to a static class attribute should be illegal") |
| D.foo = 1 |
| verify(D.foo == 1) |
| # Test that dynamic attributes are inherited |
| verify(E.foo == 1) |
| verify(F.foo == 1) |
| class SS(D): |
| __dynamic__ = 0 |
| verify(SS.__dynamic__ == 0) |
| verify(SS.foo == 1) |
| try: |
| SS.foo = 1 |
| except (AttributeError, TypeError): |
| pass |
| else: |
| verify(0, "assignment to SS.foo should be illegal") |
| # Test dynamic instances |
| class C(object): |
| __dynamic__ = 1 |
| a = C() |
| verify(not hasattr(a, "foobar")) |
| C.foobar = 2 |
| verify(a.foobar == 2) |
| C.method = lambda self: 42 |
| verify(a.method() == 42) |
| C.__repr__ = lambda self: "C()" |
| verify(repr(a) == "C()") |
| C.__int__ = lambda self: 100 |
| verify(int(a) == 100) |
| verify(a.foobar == 2) |
| verify(not hasattr(a, "spam")) |
| def mygetattr(self, name): |
| if name == "spam": |
| return "spam" |
| else: |
| return object.__getattr__(self, name) |
| C.__getattr__ = mygetattr |
| verify(a.spam == "spam") |
| a.new = 12 |
| verify(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") |
| verify(a.spam == "spam") |
| class D(C): |
| pass |
| d = D() |
| d.foo = 1 |
| verify(d.foo == 1) |
| |
| def errors(): |
| if verbose: print "Testing errors..." |
| |
| try: |
| class C(list, dictionary): |
| 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(object, Classic): |
| pass |
| except TypeError: |
| pass |
| else: |
| verify(0, "inheritance from object and Classic should be illegal") |
| |
| 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") |
| |
| def classmethods(): |
| if verbose: print "Testing class methods..." |
| class C(object): |
| def foo(*a): return a |
| goo = classmethod(foo) |
| c = C() |
| verify(C.goo(1) == (C, 1)) |
| verify(c.goo(1) == (C, 1)) |
| verify(c.foo(1) == (c, 1)) |
| class D(C): |
| pass |
| d = D() |
| verify(D.goo(1) == (D, 1)) |
| verify(d.goo(1) == (D, 1)) |
| verify(d.foo(1) == (d, 1)) |
| verify(D.foo(d, 1) == (d, 1)) |
| |
| def staticmethods(): |
| if verbose: print "Testing static methods..." |
| class C(object): |
| def foo(*a): return a |
| goo = staticmethod(foo) |
| c = C() |
| verify(C.goo(1) == (1,)) |
| verify(c.goo(1) == (1,)) |
| verify(c.foo(1) == (c, 1,)) |
| class D(C): |
| pass |
| d = D() |
| verify(D.goo(1) == (1,)) |
| verify(d.goo(1) == (1,)) |
| verify(d.foo(1) == (d, 1)) |
| verify(D.foo(d, 1) == (d, 1)) |
| |
| def classic(): |
| if verbose: print "Testing classic classes..." |
| class C: |
| def foo(*a): return a |
| goo = classmethod(foo) |
| c = C() |
| verify(C.goo(1) == (C, 1)) |
| verify(c.goo(1) == (C, 1)) |
| verify(c.foo(1) == (c, 1)) |
| class D(C): |
| pass |
| d = D() |
| verify(D.goo(1) == (D, 1)) |
| verify(d.goo(1) == (D, 1)) |
| verify(d.foo(1) == (d, 1)) |
| verify(D.foo(d, 1) == (d, 1)) |
| class E: # *not* subclassing from C |
| foo = C.foo |
| verify(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): |
| self.__get = get |
| self.__set = set |
| def __get__(self, obj, type=None): |
| return self.__get(obj) |
| def __set__(self, obj, value): |
| return self.__set(obj, value) |
| 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 |
| x = computed_attribute(__get_x, __set_x) |
| a = C() |
| verify(a.x == 0) |
| verify(a.x == 1) |
| a.x = 10 |
| verify(a.x == 10) |
| verify(a.x == 11) |
| |
| 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() |
| verify(a.foo == 3) |
| verify(a.__class__ is C) |
| class D(C): |
| pass |
| b = D() |
| verify(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 |
| verify(D.mro() == [D, B, C, A, object] == list(D.__mro__)) |
| verify(D().f() == "C") |
| class PerverseMetaType(type): |
| def mro(cls): |
| L = type.mro(cls) |
| L.reverse() |
| return L |
| class X(A,B,C,D): |
| __metaclass__ = PerverseMetaType |
| verify(X.__mro__ == (object, A, C, B, D, X)) |
| verify(X().f() == "A") |
| |
| 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: |
| return B.__getattr__(self, name) |
| 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() |
| verify(a.foo == ("getattr", "foo")) |
| a.foo = 12 |
| verify(a.setattr == ("foo", 12)) |
| del a.foo |
| verify(a.delattr == "foo") |
| |
| verify(a[12] == ("getitem", 12)) |
| a[12] = 21 |
| verify(a.setitem == (12, 21)) |
| del a[12] |
| verify(a.delitem == 12) |
| |
| verify(a[0:10] == ("getslice", 0, 10)) |
| a[0:10] = "foo" |
| verify(a.setslice == (0, 10, "foo")) |
| del a[0:10] |
| verify(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) |
| verify(c1.foo() == 1) |
| class D(C): |
| boo = C.foo |
| goo = c1.foo |
| d2 = D(2) |
| verify(d2.foo() == 2) |
| verify(d2.boo() == 2) |
| verify(d2.goo() == 1) |
| class E(object): |
| foo = C.foo |
| verify(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(hash(c1) == id(c1)) |
| verify(cmp(c1, c2) == cmp(id(c1), id(c2))) |
| verify(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 instance at ') >= 0) |
| verify(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): |
| __dynamic__ = 1 |
| def __getitem__(self, i): |
| if 0 <= i < 10: return i |
| raise IndexError |
| d1 = D() |
| d2 = D() |
| verify(not not d1) |
| verify(hash(d1) == id(d1)) |
| verify(cmp(d1, d2) == cmp(id(d1), id(d2))) |
| verify(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 instance at ') >= 0) |
| verify(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) |
| verify(hash(p0) == hash(0)) |
| verify(p0 == p0) |
| verify(p0 != p1) |
| verify(not p0 != p0) |
| verify(not p0 == p1) |
| verify(cmp(p0, p1) == -1) |
| verify(cmp(p0, p0) == 0) |
| verify(cmp(p0, p_1) == 1) |
| verify(str(p0) == "Proxy:0") |
| verify(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): |
| __dynamic__ = 1 |
| 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) |
| verify(hash(p0) == hash(0)) |
| verify(p0 == p0) |
| verify(p0 != p1) |
| verify(not p0 != p0) |
| verify(not p0 == p1) |
| verify(cmp(p0, p1) == -1) |
| verify(cmp(p0, p0) == 0) |
| verify(cmp(p0, p_1) == 1) |
| verify(str(p0) == "DProxy:0") |
| verify(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) |
| |
| 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("weakly") >= 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) |
| a = C() |
| verify(not hasattr(a, "x")) |
| a.x = 42 |
| verify(a._C__x == 42) |
| verify(a.x == 42) |
| del a.x |
| verify(not hasattr(a, "x")) |
| verify(not hasattr(a, "_C__x")) |
| C.x.__set__(a, 100) |
| verify(C.x.__get__(a) == 100) |
| ## C.x.__set__(a) |
| ## verify(not hasattr(a, "x")) |
| |
| def supers(): |
| if verbose: print "Testing super..." |
| |
| class A(object): |
| def meth(self, a): |
| return "A(%r)" % a |
| |
| verify(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) |
| |
| verify(B().meth(2) == "B(2)A(2)") |
| |
| class C(A): |
| __dynamic__ = 1 |
| def meth(self, a): |
| return "C(%r)" % a + self.__super.meth(a) |
| C._C__super = super(C) |
| |
| verify(C().meth(3) == "C(3)A(3)") |
| |
| class D(C, B): |
| def meth(self, a): |
| return "D(%r)" % a + super(D, self).meth(a) |
| |
| verify (D().meth(4) == "D(4)C(4)B(4)A(4)") |
| |
| 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.) |
| verify(repr(hexint(7) + 9) == "0x10") |
| verify(repr(hexint(1000) + 7) == "0x3ef") |
| a = hexint(12345) |
| verify(int(a) == 12345) |
| verify(int(a).__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__ |
| verify(str(octlong(3) + 5) == "010") |
| # (Note that overriding __radd__ here only seems to work |
| # because the example uses a short int left argument.) |
| verify(str(5 + octlong(3000)) == "05675") |
| a = octlong(12345) |
| verify(long(a) == 12345L) |
| verify(long(a).__class__ is long) |
| |
| class precfloat(float): |
| __slots__ = ['prec'] |
| def __init__(self, value=0.0, prec=12): |
| self.prec = int(prec) |
| float.__init__(value) |
| def __repr__(self): |
| return "%.*g" % (self.prec, self) |
| verify(repr(precfloat(1.1)) == "1.1") |
| a = precfloat(12345) |
| verify(float(a) == 12345.0) |
| verify(float(a).__class__ is float) |
| |
| 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)) |
| verify(a.rev() == madtuple((0,9,8,7,6,5,4,3,2,1))) |
| verify(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() |
| verify(v == t) |
| a = madtuple((1,2,3,4,5)) |
| verify(tuple(a) == (1,2,3,4,5)) |
| verify(tuple(a).__class__ is tuple) |
| a = madtuple(()) |
| verify(tuple(a) == ()) |
| verify(tuple(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") |
| verify(s.rev() == madstring("zyxwvutsrqponmlkjihgfedcba")) |
| verify(s.rev().rev() == madstring("abcdefghijklmnopqrstuvwxyz")) |
| for i in range(256): |
| s = madstring("".join(map(chr, range(i)))) |
| t = s.rev() |
| u = t.rev() |
| verify(u == s) |
| s = madstring("12345") |
| verify(str(s) == "12345") |
| verify(str(s).__class__ is str) |
| |
| s = madstring("\x00" * 5) |
| verify(str(s) == "\x00" * 5) |
| verify(str(s).__class__ is str) |
| |
| 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") |
| verify(u.rev() == madunicode(u"FEDCBA")) |
| verify(u.rev().rev() == madunicode(u"ABCDEF")) |
| u = madunicode(u"12345") |
| verify(unicode(u) == u"12345") |
| verify(unicode(u).__class__ is unicode) |
| |
| def all(): |
| lists() |
| dicts() |
| dict_constructor() |
| test_dir() |
| ints() |
| longs() |
| floats() |
| complexes() |
| spamlists() |
| spamdicts() |
| pydicts() |
| pylists() |
| metaclass() |
| pymods() |
| multi() |
| diamond() |
| objects() |
| slots() |
| dynamics() |
| errors() |
| classmethods() |
| staticmethods() |
| classic() |
| compattr() |
| newslot() |
| altmro() |
| overloading() |
| methods() |
| specials() |
| weakrefs() |
| properties() |
| supers() |
| inherits() |
| |
| all() |
| |
| if verbose: print "All OK" |