Method test_eq_unregister_clear

Lib/test/_test_atexit.py:138–149

(self)

            atexit.unregister(func)

    def test_eq_unregister_clear(self):
        # Issue #112127: callback's __eq__ may call unregister or _clear
        class Evil:
            def __eq__(self, other):
                action(other)
                return NotImplemented

        for action in atexit.unregister, lambda o: atexit._clear():
            with self.subTest(action=action):
                atexit.register(lambda: None)
                atexit.unregister(Evil())
                atexit._clear()

    def test_eq_unregister(self):
        # Issue #112127: callback's __eq__ may call unregister