message: Remove the "/" after path in assertion, as path join used somewhere in windows inserts "\" and breaks assertion.
  AssertionError: 'gs://example-bucket/tempfiles\\7e4b3f071dc847cb8dbbe08a699b4cad' does not start with 'gs://example-bucket/tempfiles/'
diff: @@ -102,9 +102,9 @@ class TPUTestWrapperTest(test.TestCase):
  tpu_test_wrapper.set_random_test_dir()
  self.assertStartsWith(flags.FLAGS.model_dir,
  - 'gs://example-bucket/tempfiles/')
  + 'gs://example-bucket/tempfiles')
  self.assertGreater(
  - len(flags.FLAGS.model_dir), len('gs://example-bucket/tempfiles/'))
  + len(flags.FLAGS.model_dir), len('gs://example-bucket/tempfiles'))
  @flagsaver.flagsaver(test_dir_base='gs://example-bucket/tempfiles')
  def test_set_random_test_dir_repeatable(self):
  