diff -r 58bd6a58365d Lib/packaging/tests/test_util.py --- a/Lib/packaging/tests/test_util.py Wed Feb 08 04:09:37 2012 +0100 +++ b/Lib/packaging/tests/test_util.py Wed Feb 08 10:27:36 2012 +0200 @@ -199,6 +199,9 @@ self.assertEqual(convert_path('.'), os.curdir) + # empty string + self.assertEqual(convert_path(""), "") + def test_change_root(self): # linux/mac os.name = 'posix'