Method test_Sized

Lib/test/test_collections.py:1324–1340

(self)

            run_async(IgnoreGeneratorExit().aclose())

    def test_Sized(self):
        non_samples = [None, 42, 3.14, 1j,
                       _test_gen(),
                       (x for x in []),
                       ]
        for x in non_samples:
            self.assertNotIsInstance(x, Sized)
            self.assertNotIsSubclass(type(x), Sized)
        samples = [bytes(), str(),
                   tuple(), list(), set(), frozenset(), dict(),
                   dict().keys(), dict().items(), dict().values(),
                   ]
        for x in samples:
            self.assertIsInstance(x, Sized)
            self.assertIsSubclass(type(x), Sized)
        self.validate_abstract_methods(Sized, '__len__')
        self.validate_isinstance(Sized, '__len__')

    def test_Container(self):
        non_samples = [None, 42, 3.14, 1j,