test_collections.py 文件源码

def test_MutableMapping(self):
        for sample in [dict]:
            self.assertIsInstance(sample(), MutableMapping)
            self.assertTrue(issubclass(sample, MutableMapping))
        self.validate_abstract_methods(MutableMapping, '__contains__', '__iter__', '__len__',
            '__getitem__', '__setitem__', '__delitem__')