message: Add additional test case
diff: @@ -421,8 +421,9 @@ class ClipTest(test.TestCase):
  # Test case for GitHub issue 19337
  z = array_ops.placeholder(dtype=dtypes.float32, shape=None)
  x = clip_ops.clip_by_value(z, z, 1)
  + y = clip_ops.clip_by_value(z, 1, z)
  with self.test_session(use_gpu=True) as sess:
  - sess.run(x, feed_dict={z: np.zeros((7, 0))})
  + sess.run([x, y], feed_dict={z: np.zeros((7, 0))})
  if __name__ == '__main__':
  