Merge pull request #2657 from nschlemm/20140516-test_testcase_ordering

cater for running tests from another directory than tests

tests/test_runner/test_discover_runner.py

@@ -104,6 +104,7 @@ class DiscoverRunnerTest(TestCase):
         self.assertEqual(count, 0)
 
     def test_testcase_ordering(self):
+        with change_cwd(".."):
             suite = DiscoverRunner().build_suite(["test_discovery_sample/"])
             self.assertEqual(
                 suite._tests[0].__class__.__name__,