Method check

Lib/test/test_ordered_dict.py:305–311

(dup)

        od.x = ['x']
        od.z = ['z']
        def check(dup):
            msg = "\ncopy: %s\nod: %s" % (dup, od)
            self.assertIsNot(dup, od, msg)
            self.assertEqual(dup, od)
            self.assertEqual(list(dup.items()), list(od.items()))
            self.assertEqual(len(dup), len(od))
            self.assertEqual(type(dup), type(od))
        check(od.copy())
        dup = copy.copy(od)
        check(dup)