1 files changed, 11 insertions, 0 deletions
diff --git a/Lib/test/test_json/test_default.py b/Lib/test/test_json/test_default.py
index 9b8325e..3ce1668 100644
--- a/Lib/test/test_json/test_default.py
+++ b/Lib/test/test_json/test_default.py
@@ -1,3 +1,4 @@
+import collections
 from test.test_json import PyTest, CTest
 
 
@@ -7,6 +8,16 @@ class TestDefault:
             self.dumps(type, default=repr),
             self.dumps(repr(type)))
 
+    def test_ordereddict(self):
+        od = collections.OrderedDict(a=1, b=2, c=3, d=4)
+        od.move_to_end('b')
+        self.assertEqual(
+            self.dumps(od),
+            '{"a": 1, "c": 3, "d": 4, "b": 2}')
+        self.assertEqual(
+            self.dumps(od, sort_keys=True),
+            '{"a": 1, "b": 2, "c": 3, "d": 4}')
+
 
 class TestPyDefault(TestDefault, PyTest): pass
 class TestCDefault(TestDefault, CTest): pass