diff options
Diffstat (limited to 'Lib/test/test_collections.py')
| -rw-r--r-- | Lib/test/test_collections.py | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py index 4a068e0..d1fd60e 100644 --- a/Lib/test/test_collections.py +++ b/Lib/test/test_collections.py @@ -210,6 +210,27 @@ class ABCTestCase(unittest.TestCase): C = type('C', (abc,), stubs) self.assertRaises(TypeError, C, name) + def validate_isinstance(self, abc, name): + stub = lambda s, *args: 0 + + # new-style class + C = type('C', (object,), {name: stub}) + self.assertTrue(isinstance(C(), abc)) + self.assertTrue(issubclass(C, abc)) + # old-style class + class C: pass + setattr(C, name, stub) + self.assertTrue(isinstance(C(), abc)) + self.assertTrue(issubclass(C, abc)) + + # new-style class + C = type('C', (object,), {'__hash__': None}) + self.assertFalse(isinstance(C(), abc)) + self.assertFalse(issubclass(C, abc)) + # old-style class + class C: pass + self.assertFalse(isinstance(C(), abc)) + self.assertFalse(issubclass(C, abc)) class TestOneTrickPonyABCs(ABCTestCase): @@ -238,6 +259,7 @@ class TestOneTrickPonyABCs(ABCTestCase): self.assertEqual(hash(H()), 0) self.failIf(issubclass(int, H)) self.validate_abstract_methods(Hashable, '__hash__') + self.validate_isinstance(Hashable, '__hash__') def test_Iterable(self): # Check some non-iterables @@ -262,6 +284,7 @@ class TestOneTrickPonyABCs(ABCTestCase): self.assertEqual(list(I()), []) self.failIf(issubclass(str, I)) self.validate_abstract_methods(Iterable, '__iter__') + self.validate_isinstance(Iterable, '__iter__') def test_Iterator(self): non_samples = [None, 42, 3.14, 1j, "".encode('ascii'), "", (), [], @@ -281,6 +304,7 @@ class TestOneTrickPonyABCs(ABCTestCase): self.failUnless(isinstance(x, Iterator), repr(x)) self.failUnless(issubclass(type(x), Iterator), repr(type(x))) self.validate_abstract_methods(Iterator, 'next') + self.validate_isinstance(Iterator, 'next') def test_Sized(self): non_samples = [None, 42, 3.14, 1j, @@ -298,6 +322,7 @@ class TestOneTrickPonyABCs(ABCTestCase): self.failUnless(isinstance(x, Sized), repr(x)) self.failUnless(issubclass(type(x), Sized), repr(type(x))) self.validate_abstract_methods(Sized, '__len__') + self.validate_isinstance(Sized, '__len__') def test_Container(self): non_samples = [None, 42, 3.14, 1j, @@ -315,6 +340,7 @@ class TestOneTrickPonyABCs(ABCTestCase): self.failUnless(isinstance(x, Container), repr(x)) self.failUnless(issubclass(type(x), Container), repr(type(x))) self.validate_abstract_methods(Container, '__contains__') + self.validate_isinstance(Container, '__contains__') def test_Callable(self): non_samples = [None, 42, 3.14, 1j, @@ -334,6 +360,7 @@ class TestOneTrickPonyABCs(ABCTestCase): self.failUnless(isinstance(x, Callable), repr(x)) self.failUnless(issubclass(type(x), Callable), repr(type(x))) self.validate_abstract_methods(Callable, '__call__') + self.validate_isinstance(Callable, '__call__') def test_direct_subclassing(self): for B in Hashable, Iterable, Iterator, Sized, Container, Callable: @@ -475,7 +502,7 @@ class TestCollectionABCs(ABCTestCase): self.validate_abstract_methods(MutableSequence, '__contains__', '__iter__', '__len__', '__getitem__', '__setitem__', '__delitem__', 'insert') -import doctest, collections +import collections def test_main(verbose=None): NamedTupleDocs = doctest.DocTestSuite(module=collections) |