Method test_Hashable

Lib/test/test_collections.py:909–933

(self)

        self.assertNotIsSubclass(CoroLike, Coroutine)

    def test_Hashable(self):
        # Check some non-hashables
        non_samples = [bytearray(), list(), set(), dict()]
        for x in non_samples:
            self.assertNotIsInstance(x, Hashable)
            self.assertNotIsSubclass(type(x), Hashable)
        # Check some hashables
        samples = [None,
                   int(), float(), complex(),
                   str(),
                   tuple(), frozenset(),
                   int, list, object, type, bytes()
                   ]
        for x in samples:
            self.assertIsInstance(x, Hashable)
            self.assertIsSubclass(type(x), Hashable)
        self.assertRaises(TypeError, Hashable)
        # Check direct subclassing
        class H(Hashable):
            def __hash__(self):
                return super().__hash__()
        self.assertEqual(hash(H()), 0)
        self.assertNotIsSubclass(int, H)
        self.validate_abstract_methods(Hashable, '__hash__')
        self.validate_isinstance(Hashable, '__hash__')

    def test_AsyncIterable(self):
        class AI: