diff -r 096eae786285 Lib/test/test_enum.py
--- a/Lib/test/test_enum.py	Sun Oct 13 22:25:10 2013 +0200
+++ b/Lib/test/test_enum.py	Sun Oct 13 21:36:53 2013 +0100
@@ -1141,6 +1141,8 @@
         self.assertEqual(list(ColorInAList), [ColorInAList.red, ColorInAList.green, ColorInAList.blue])
         self.assertEqual(ColorInAList.red.value, [1])
         self.assertEqual(ColorInAList([1]), ColorInAList.red)
+        # Following test exercises the if-clause 
+        self.assertEqual(ColorInAList([2]), ColorInAList.green)
 
     def test_conflicting_types_resolved_in_new(self):
         class LabelledIntEnum(int, Enum):