message: Log individual test times to help users track down long-running tests.
diff: @@ -31,6 +31,7 @@ import random
  import re
  import tempfile
  import threading
  +import time
  import unittest
  from absl.testing import parameterized
  @@ -1902,6 +1903,7 @@ class TensorFlowTestCase(googletest.TestCase):
  self._threads = []
  self._tempdir = None
  self._cached_session = None
  + self._test_start_time = None
  def setUp(self):
  self._ClearCachedSession()
  @@ -1925,7 +1927,15 @@ class TensorFlowTestCase(googletest.TestCase):
  if self.id().endswith(".test_session"):
  self.skipTest("Not a test.")
  + self._test_start_time = time.time()
  +
  def tearDown(self):
  + # If a subclass overrides setUp and doesn't call the parent class's setUp,
  + # then we may not have set the start time.
  + if self._test_start_time is not None:
  + logging.info("time(%s): %ss", self.id(),
  + round(time.time() - self._test_start_time, 2))
  +
  for thread in self._threads:
  thread.check_termination()
  