Method test_proxy_bad_next

Lib/test/test_weakref.py:504–517

(self)

        self.assertEqual(list(weak_it), [4, 5, 6])

    def test_proxy_bad_next(self):
        # bpo-44720: PyIter_Next() shouldn't be called if the reference
        # isn't an iterator.

        not_an_iterator = lambda: 0

        class A:
            def __iter__(self):
                return weakref.proxy(not_an_iterator)
        a = A()

        msg = "Weakref proxy referenced a non-iterator"
        with self.assertRaisesRegex(TypeError, msg):
            list(a)

    def test_proxy_reversed(self):
        class MyObj: