Method test_highly_nested_subclass

Lib/test/test_ordered_dict.py:504–519

(self)

        support.gc_collect()

    def test_highly_nested_subclass(self):
        # Issues 25395 and 35983: test that the trashcan mechanism works
        # correctly for OrderedDict: deleting a highly nested OrderDict
        # should not crash Python.
        OrderedDict = self.OrderedDict
        deleted = []
        class MyOD(OrderedDict):
            def __del__(self):
                deleted.append(self.i)
        obj = None
        for i in range(100):
            obj = MyOD([(None, obj)])
            obj.i = i
        del obj
        support.gc_collect()
        self.assertEqual(deleted, list(reversed(range(100))))

    def test_delitem_hash_collision(self):
        OrderedDict = self.OrderedDict