Method validate_isinstance

Lib/test/test_collections.py:742–752

(self, abc, name)

            self.assertRaises(TypeError, C)

    def validate_isinstance(self, abc, name):
        stub = lambda s, *args: 0

        C = type('C', (object,), {'__hash__': None})
        setattr(C, name, stub)
        self.assertIsInstance(C(), abc)
        self.assertIsSubclass(C, abc)

        C = type('C', (object,), {'__hash__': None})
        self.assertNotIsInstance(C(), abc)
        self.assertNotIsSubclass(C, abc)

    def validate_comparison(self, instance):
        ops = ['lt', 'gt', 'le', 'ge', 'ne', 'or', 'and', 'xor', 'sub']