Method test_wrong_newobj_class

Lib/test/pickletester.py:1872–1881

(self)

                    f'when serializing {REX.__module__}.REX object'])

    def test_wrong_newobj_class(self):
        obj = REX((copyreg.__newobj__, (str,)))
        for proto in protocols[2:]:
            with self.subTest(proto=proto):
                with self.assertRaises(pickle.PicklingError) as cm:
                    self.dumps(obj, proto)
                self.assertEqual(str(cm.exception),
                    f'first argument to __newobj__() must be {REX!r}, not {str!r}')
                self.assertEqual(cm.exception.__notes__, [
                    f'when serializing {REX.__module__}.REX object'])

    def test_unpickleable_newobj_class(self):
        class LocalREX(REX): pass