def testIdempotentLeftRight(self): x_np = np.array([[1, 2, 3], [1, 2, 3]], dtype=np.uint8).reshape([2, 3, 1]) for use_gpu in [False, True]: with self.test_session(use_gpu=use_gpu): x_tf = constant_op.constant(x_np, shape=x_np.shape) y = image_ops.flip_left_right(image_ops.flip_left_right(x_tf)) y_tf = y.eval() self.assertAllEqual(y_tf, x_np)