message: Extra comment indicating this is a graph building test.
diff: @@ -1741,7 +1741,8 @@ class BatchNormTest(test.TestCase):
  def testBatchNormCenterFalse(self)
  a = array_ops.placeholder(dtype.float32, shape=(10, 10, 10, 10))
  - b = _layers.batch_norm(a, center=False, data_format='NCHW',
  + # Test that center=False builds a valid graph.
  + _layers.batch_norm(a, center=False, data_format='NCHW',
  zero_debias_moving_mean=True)
  def testUnknownShape(self):
  