| "Test the functionality of Python classes implementing operators." |
| |
| import unittest |
| import sys |
| |
| from test import test_support |
| |
| testmeths = [ |
| |
| # Binary operations |
| "add", |
| "radd", |
| "sub", |
| "rsub", |
| "mul", |
| "rmul", |
| "truediv", |
| "rtruediv", |
| "mod", |
| "rmod", |
| "divmod", |
| "rdivmod", |
| "pow", |
| "rpow", |
| "rshift", |
| "rrshift", |
| "lshift", |
| "rlshift", |
| "and", |
| "rand", |
| "or", |
| "ror", |
| "xor", |
| "rxor", |
| |
| # List/dict operations |
| "contains", |
| "getitem", |
| "setitem", |
| "delitem", |
| |
| # Unary operations |
| "neg", |
| "pos", |
| "abs", |
| |
| # generic operations |
| "init", |
| ] |
| |
| # These need to return something other than None |
| # "hash", |
| # "str", |
| # "repr", |
| # "int", |
| # "float", |
| |
| # These are separate because they can influence the test of other methods. |
| # "getattr", |
| # "setattr", |
| # "delattr", |
| |
| callLst = [] |
| def trackCall(f): |
| def track(*args, **kwargs): |
| callLst.append((f.__name__, args)) |
| return f(*args, **kwargs) |
| return track |
| |
| statictests = """ |
| @trackCall |
| def __hash__(self, *args): |
| return hash(id(self)) |
| |
| @trackCall |
| def __str__(self, *args): |
| return "AllTests" |
| |
| @trackCall |
| def __repr__(self, *args): |
| return "AllTests" |
| |
| @trackCall |
| def __int__(self, *args): |
| return 1 |
| |
| @trackCall |
| def __index__(self, *args): |
| return 1 |
| |
| @trackCall |
| def __float__(self, *args): |
| return 1.0 |
| |
| @trackCall |
| def __cmp__(self, *args): |
| return 0 |
| |
| @trackCall |
| def __eq__(self, *args): |
| return True |
| |
| @trackCall |
| def __ne__(self, *args): |
| return False |
| |
| @trackCall |
| def __lt__(self, *args): |
| return False |
| |
| @trackCall |
| def __le__(self, *args): |
| return True |
| |
| @trackCall |
| def __gt__(self, *args): |
| return False |
| |
| @trackCall |
| def __ge__(self, *args): |
| return True |
| """ |
| |
| # Synthesize all the other AllTests methods from the names in testmeths. |
| |
| method_template = """\ |
| @trackCall |
| def __%s__(self, *args): |
| pass |
| """ |
| |
| d = {} |
| exec(statictests, globals(), d) |
| for method in testmeths: |
| exec(method_template % method, globals(), d) |
| AllTests = type("AllTests", (object,), d) |
| del d, statictests, method, method_template |
| |
| class ClassTests(unittest.TestCase): |
| def setUp(self): |
| callLst[:] = [] |
| |
| def assertCallStack(self, expected_calls): |
| actualCallList = callLst[:] # need to copy because the comparison below will add |
| # additional calls to callLst |
| if expected_calls != actualCallList: |
| self.fail("Expected call list:\n %s\ndoes not match actual call list\n %s" % |
| (expected_calls, actualCallList)) |
| |
| def testInit(self): |
| foo = AllTests() |
| self.assertCallStack([("__init__", (foo,))]) |
| |
| def testBinaryOps(self): |
| testme = AllTests() |
| # Binary operations |
| |
| callLst[:] = [] |
| testme + 1 |
| self.assertCallStack([("__add__", (testme, 1))]) |
| |
| callLst[:] = [] |
| 1 + testme |
| self.assertCallStack([("__radd__", (testme, 1))]) |
| |
| callLst[:] = [] |
| testme - 1 |
| self.assertCallStack([("__sub__", (testme, 1))]) |
| |
| callLst[:] = [] |
| 1 - testme |
| self.assertCallStack([("__rsub__", (testme, 1))]) |
| |
| callLst[:] = [] |
| testme * 1 |
| self.assertCallStack([("__mul__", (testme, 1))]) |
| |
| callLst[:] = [] |
| 1 * testme |
| self.assertCallStack([("__rmul__", (testme, 1))]) |
| |
| if 1/2 == 0: |
| callLst[:] = [] |
| testme / 1 |
| self.assertCallStack([("__div__", (testme, 1))]) |
| |
| |
| callLst[:] = [] |
| 1 / testme |
| self.assertCallStack([("__rdiv__", (testme, 1))]) |
| |
| callLst[:] = [] |
| testme % 1 |
| self.assertCallStack([("__mod__", (testme, 1))]) |
| |
| callLst[:] = [] |
| 1 % testme |
| self.assertCallStack([("__rmod__", (testme, 1))]) |
| |
| |
| callLst[:] = [] |
| divmod(testme,1) |
| self.assertCallStack([("__divmod__", (testme, 1))]) |
| |
| callLst[:] = [] |
| divmod(1, testme) |
| self.assertCallStack([("__rdivmod__", (testme, 1))]) |
| |
| callLst[:] = [] |
| testme ** 1 |
| self.assertCallStack([("__pow__", (testme, 1))]) |
| |
| callLst[:] = [] |
| 1 ** testme |
| self.assertCallStack([("__rpow__", (testme, 1))]) |
| |
| callLst[:] = [] |
| testme >> 1 |
| self.assertCallStack([("__rshift__", (testme, 1))]) |
| |
| callLst[:] = [] |
| 1 >> testme |
| self.assertCallStack([("__rrshift__", (testme, 1))]) |
| |
| callLst[:] = [] |
| testme << 1 |
| self.assertCallStack([("__lshift__", (testme, 1))]) |
| |
| callLst[:] = [] |
| 1 << testme |
| self.assertCallStack([("__rlshift__", (testme, 1))]) |
| |
| callLst[:] = [] |
| testme & 1 |
| self.assertCallStack([("__and__", (testme, 1))]) |
| |
| callLst[:] = [] |
| 1 & testme |
| self.assertCallStack([("__rand__", (testme, 1))]) |
| |
| callLst[:] = [] |
| testme | 1 |
| self.assertCallStack([("__or__", (testme, 1))]) |
| |
| callLst[:] = [] |
| 1 | testme |
| self.assertCallStack([("__ror__", (testme, 1))]) |
| |
| callLst[:] = [] |
| testme ^ 1 |
| self.assertCallStack([("__xor__", (testme, 1))]) |
| |
| callLst[:] = [] |
| 1 ^ testme |
| self.assertCallStack([("__rxor__", (testme, 1))]) |
| |
| def testListAndDictOps(self): |
| testme = AllTests() |
| |
| # List/dict operations |
| |
| class Empty: pass |
| |
| try: |
| 1 in Empty() |
| self.fail('failed, should have raised TypeError') |
| except TypeError: |
| pass |
| |
| callLst[:] = [] |
| 1 in testme |
| self.assertCallStack([('__contains__', (testme, 1))]) |
| |
| callLst[:] = [] |
| testme[1] |
| self.assertCallStack([('__getitem__', (testme, 1))]) |
| |
| callLst[:] = [] |
| testme[1] = 1 |
| self.assertCallStack([('__setitem__', (testme, 1, 1))]) |
| |
| callLst[:] = [] |
| del testme[1] |
| self.assertCallStack([('__delitem__', (testme, 1))]) |
| |
| callLst[:] = [] |
| testme[:42] |
| self.assertCallStack([('__getitem__', (testme, slice(None, 42)))]) |
| |
| callLst[:] = [] |
| testme[:42] = "The Answer" |
| self.assertCallStack([('__setitem__', (testme, slice(None, 42), |
| "The Answer"))]) |
| |
| callLst[:] = [] |
| del testme[:42] |
| self.assertCallStack([('__delitem__', (testme, slice(None, 42)))]) |
| |
| callLst[:] = [] |
| testme[2:1024:10] |
| self.assertCallStack([('__getitem__', (testme, slice(2, 1024, 10)))]) |
| |
| callLst[:] = [] |
| testme[2:1024:10] = "A lot" |
| self.assertCallStack([('__setitem__', (testme, slice(2, 1024, 10), |
| "A lot"))]) |
| callLst[:] = [] |
| del testme[2:1024:10] |
| self.assertCallStack([('__delitem__', (testme, slice(2, 1024, 10)))]) |
| |
| callLst[:] = [] |
| testme[:42, ..., :24:, 24, 100] |
| self.assertCallStack([('__getitem__', (testme, (slice(None, 42, None), |
| Ellipsis, |
| slice(None, 24, None), |
| 24, 100)))]) |
| callLst[:] = [] |
| testme[:42, ..., :24:, 24, 100] = "Strange" |
| self.assertCallStack([('__setitem__', (testme, (slice(None, 42, None), |
| Ellipsis, |
| slice(None, 24, None), |
| 24, 100), "Strange"))]) |
| callLst[:] = [] |
| del testme[:42, ..., :24:, 24, 100] |
| self.assertCallStack([('__delitem__', (testme, (slice(None, 42, None), |
| Ellipsis, |
| slice(None, 24, None), |
| 24, 100)))]) |
| |
| def testUnaryOps(self): |
| testme = AllTests() |
| |
| callLst[:] = [] |
| -testme |
| self.assertCallStack([('__neg__', (testme,))]) |
| callLst[:] = [] |
| +testme |
| self.assertCallStack([('__pos__', (testme,))]) |
| callLst[:] = [] |
| abs(testme) |
| self.assertCallStack([('__abs__', (testme,))]) |
| callLst[:] = [] |
| int(testme) |
| self.assertCallStack([('__int__', (testme,))]) |
| callLst[:] = [] |
| float(testme) |
| self.assertCallStack([('__float__', (testme,))]) |
| callLst[:] = [] |
| oct(testme) |
| self.assertCallStack([('__index__', (testme,))]) |
| callLst[:] = [] |
| hex(testme) |
| self.assertCallStack([('__index__', (testme,))]) |
| |
| |
| def testMisc(self): |
| testme = AllTests() |
| |
| callLst[:] = [] |
| hash(testme) |
| self.assertCallStack([('__hash__', (testme,))]) |
| |
| callLst[:] = [] |
| repr(testme) |
| self.assertCallStack([('__repr__', (testme,))]) |
| |
| callLst[:] = [] |
| str(testme) |
| self.assertCallStack([('__str__', (testme,))]) |
| |
| callLst[:] = [] |
| testme == 1 |
| self.assertCallStack([('__eq__', (testme, 1))]) |
| |
| callLst[:] = [] |
| testme < 1 |
| self.assertCallStack([('__lt__', (testme, 1))]) |
| |
| callLst[:] = [] |
| testme > 1 |
| self.assertCallStack([('__gt__', (testme, 1))]) |
| |
| callLst[:] = [] |
| testme != 1 |
| self.assertCallStack([('__ne__', (testme, 1))]) |
| |
| callLst[:] = [] |
| 1 == testme |
| self.assertCallStack([('__eq__', (1, testme))]) |
| |
| callLst[:] = [] |
| 1 < testme |
| self.assertCallStack([('__gt__', (1, testme))]) |
| |
| callLst[:] = [] |
| 1 > testme |
| self.assertCallStack([('__lt__', (1, testme))]) |
| |
| callLst[:] = [] |
| 1 != testme |
| self.assertCallStack([('__ne__', (1, testme))]) |
| |
| |
| def testGetSetAndDel(self): |
| # Interfering tests |
| class ExtraTests(AllTests): |
| @trackCall |
| def __getattr__(self, *args): |
| return "SomeVal" |
| |
| @trackCall |
| def __setattr__(self, *args): |
| pass |
| |
| @trackCall |
| def __delattr__(self, *args): |
| pass |
| |
| testme = ExtraTests() |
| |
| callLst[:] = [] |
| testme.spam |
| self.assertCallStack([('__getattr__', (testme, "spam"))]) |
| |
| callLst[:] = [] |
| testme.eggs = "spam, spam, spam and ham" |
| self.assertCallStack([('__setattr__', (testme, "eggs", |
| "spam, spam, spam and ham"))]) |
| |
| callLst[:] = [] |
| del testme.cardinal |
| self.assertCallStack([('__delattr__', (testme, "cardinal"))]) |
| |
| def testDel(self): |
| x = [] |
| |
| class DelTest: |
| def __del__(self): |
| x.append("crab people, crab people") |
| testme = DelTest() |
| del testme |
| import gc |
| gc.collect() |
| self.assertEquals(["crab people, crab people"], x) |
| |
| def testBadTypeReturned(self): |
| # return values of some method are type-checked |
| class BadTypeClass: |
| def __int__(self): |
| return None |
| __float__ = __int__ |
| __str__ = __int__ |
| __repr__ = __int__ |
| __oct__ = __int__ |
| __hex__ = __int__ |
| |
| for f in [int, float, str, repr, oct, hex]: |
| self.assertRaises(TypeError, f, BadTypeClass()) |
| |
| def testHashStuff(self): |
| # Test correct errors from hash() on objects with comparisons but |
| # no __hash__ |
| |
| class C0: |
| pass |
| |
| hash(C0()) # This should work; the next two should raise TypeError |
| |
| class C1: |
| def __cmp__(self, other): return 0 |
| |
| self.assertRaises(TypeError, hash, C1()) |
| |
| class C2: |
| def __eq__(self, other): return 1 |
| |
| self.assertRaises(TypeError, hash, C2()) |
| |
| |
| def testSFBug532646(self): |
| # Test for SF bug 532646 |
| |
| class A: |
| pass |
| A.__call__ = A() |
| a = A() |
| |
| try: |
| a() # This should not segfault |
| except RuntimeError: |
| pass |
| else: |
| self.fail("Failed to raise RuntimeError") |
| |
| def testForExceptionsRaisedInInstanceGetattr2(self): |
| # Tests for exceptions raised in instance_getattr2(). |
| |
| def booh(self): |
| raise AttributeError("booh") |
| |
| class A: |
| a = property(booh) |
| try: |
| A().a # Raised AttributeError: A instance has no attribute 'a' |
| except AttributeError as x: |
| if str(x) != "booh": |
| self.fail("attribute error for A().a got masked: %s" % x) |
| |
| class E: |
| __eq__ = property(booh) |
| E() == E() # In debug mode, caused a C-level assert() to fail |
| |
| class I: |
| __init__ = property(booh) |
| try: |
| # In debug mode, printed XXX undetected error and |
| # raises AttributeError |
| I() |
| except AttributeError as x: |
| pass |
| else: |
| self.fail("attribute error for I.__init__ got masked") |
| |
| def testHashComparisonOfMethods(self): |
| # Test comparison and hash of methods |
| class A: |
| def __init__(self, x): |
| self.x = x |
| def f(self): |
| pass |
| def g(self): |
| pass |
| def __eq__(self, other): |
| return self.x == other.x |
| def __hash__(self): |
| return self.x |
| class B(A): |
| pass |
| |
| a1 = A(1) |
| a2 = A(2) |
| self.assertEquals(a1.f, a1.f) |
| self.assertNotEquals(a1.f, a2.f) |
| self.assertNotEquals(a1.f, a1.g) |
| self.assertEquals(a1.f, A(1).f) |
| self.assertEquals(hash(a1.f), hash(a1.f)) |
| self.assertEquals(hash(a1.f), hash(A(1).f)) |
| |
| self.assertNotEquals(A.f, a1.f) |
| self.assertNotEquals(A.f, A.g) |
| self.assertEquals(B.f, A.f) |
| self.assertEquals(hash(B.f), hash(A.f)) |
| |
| # the following triggers a SystemError in 2.4 |
| a = A(hash(A.f)^(-1)) |
| hash(a.f) |
| |
| def test_main(): |
| test_support.run_unittest(ClassTests) |
| |
| if __name__=='__main__': |
| test_main() |