Make it easier to extend OrderedDict without breaking it.
diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
index 32ce35b..8c95979 100644
--- a/Lib/test/test_collections.py
+++ b/Lib/test/test_collections.py
@@ -1012,6 +1012,14 @@
od = OrderedDict(**d)
self.assertGreater(sys.getsizeof(od), sys.getsizeof(d))
+ def test_override_update(self):
+ # Verify that subclasses can override update() without breaking __init__()
+ class MyOD(OrderedDict):
+ def update(self, *args, **kwds):
+ raise Exception()
+ items = [('a', 1), ('c', 3), ('b', 2)]
+ self.assertEqual(list(MyOD(items).items()), items)
+
class GeneralMappingTests(mapping_tests.BasicTestMappingProtocol):
type2test = OrderedDict