message: Provide a detailed message about why "test_session" is skipped in tf test case.
  Fixes
diff: @@ -2167,7 +2167,11 @@ class TensorFlowTestCase(googletest.TestCase):
  force_gpu=False):
  """Use cached_session instead."""
  if self.id().endswith(".test_session"):
  - self.skipTest("Not a test.")
  + self.skipTest(
  + "Tests that have the name \"test_session\" are automatically skipped "
  + "by TensorFlow test fixture, as the name is reserved for creating "
  + "sessions within tests. Please rename your test if you have a test "
  + "with this name.")
  if context.executing_eagerly():
  yield None
  else:
  