Class Picky

Lib/test/test_descr.py:5704–5711

    def test_special_method_lookup(self):
        protocols = range(pickle.HIGHEST_PROTOCOL + 1)
        class Picky:
            def __getstate__(self):
                return {}

            def __getattr__(self, attr):
                if attr in ("__getnewargs__", "__getnewargs_ex__"):
                    raise AssertionError(attr)
                return None
        for protocol in protocols:
            state = {} if protocol >= 2 else None
            self._check_reduce(protocol, Picky(), state=state)