diff options
Diffstat (limited to 'Lib/test/test_copy.py')
| -rw-r--r-- | Lib/test/test_copy.py | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/Lib/test/test_copy.py b/Lib/test/test_copy.py index 732b4f4..a84c109 100644 --- a/Lib/test/test_copy.py +++ b/Lib/test/test_copy.py @@ -532,6 +532,26 @@ class TestCopy(unittest.TestCase): self.assertEqual(x.foo, y.foo) self.assertTrue(x.foo is not y.foo) + def test_deepcopy_dict_subclass(self): + class C(dict): + def __init__(self, d=None): + if not d: + d = {} + self._keys = list(d.keys()) + super().__init__(d) + def __setitem__(self, key, item): + super().__setitem__(key, item) + if key not in self._keys: + self._keys.append(key) + x = C(d={'foo':0}) + y = copy.deepcopy(x) + self.assertEqual(x, y) + self.assertEqual(x._keys, y._keys) + self.assertTrue(x is not y) + x['bar'] = 1 + self.assertNotEqual(x, y) + self.assertNotEqual(x._keys, y._keys) + def test_copy_list_subclass(self): class C(list): pass |