Method test_set_callback_attribute

Lib/test/test_weakref.py:1007–1012

(self)

        self.assertIsNone(ref.__callback__)

    def test_set_callback_attribute(self):
        x = Object(1)
        callback = lambda ref: None
        ref1 = weakref.ref(x, callback)
        with self.assertRaises(AttributeError):
            ref1.__callback__ = lambda ref: None

    def test_callback_gcs(self):
        class ObjectWithDel(Object):