@test.mock.patch.object(time, 'time')
  def test_print_every_n_secs_and_end(self, mock_time):
    with ops.Graph().as_default(), session_lib.Session() as sess:
      mock_time.return_value = MOCK_START_TIME
      self._validate_print_every_n_secs(sess, at_end=True, mock_time=mock_time)