message: Use path.join to make sure that the test passes on windows as well.
diff: @@ -67,7 +67,7 @@ class DistributedFileUtilsTest(test.TestCase):
  strategy = DistributedFileUtilsTest.MockedWorkerStrategy()
  self.assertEqual(
  distributed_file_utils.write_filepath(filepath, strategy),
  - os.path.join(dirpath, 'workertemp_3/foo.bar'))
  + os.path.join(dirpath, 'workertemp_3', 'foo.bar'))
  self.assertEqual(
  distributed_file_utils.write_dirpath(dirpath, strategy),
  os.path.join(dirpath, 'workertemp_3'))
  