1 files changed, 9 insertions, 0 deletions
diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index 46cf2d3..dafcf00 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -1968,6 +1968,15 @@ class TestType(unittest.TestCase):
         with self.assertRaises(TypeError):
             type('A', (B,), {'__slots__': '__weakref__'})
 
+    def test_namespace_order(self):
+        # bpo-34320: namespace should preserve order
+        od = collections.OrderedDict([('a', 1), ('b', 2)])
+        od.move_to_end('a')
+        expected = list(od.items())
+
+        C = type('C', (), od)
+        self.assertEqual(list(C.__dict__.items())[:2], [('b', 2), ('a', 1)])
+
 
 def load_tests(loader, tests, pattern):
     from doctest import DocTestSuite