message: Add test case for axis validation with tf.nn.softmax
diff: @@ -222,6 +222,13 @@ class SoftmaxTest(test.TestCase):
  with self.assertRaises(errors_impl.InvalidArgumentError):
  nn_ops.softmax([1., 2., 3., 4.], axis=dim).eval()
  + def testInvalidAxis(self):
  + # Test case for GitHub issue 22793.
  + with self.cached_session():
  + ones = array_ops.ones(shape=[2, 3])
  + with self.assertRaises(errors_impl.InvalidArgumentError):
  + nn_ops.softmax(ones, axis=2).eval()
  +
  def testLargeDims(self):
  # Make sure that we properly handle large inputs. See
  # https://github.com/tensorflow/tensorflow/issues/4425 for details
  