# Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.## Licensed under the Apache License, Version 2.0 (the "License");# you may not use this file except in compliance with the License.# You may obtain a copy of the License at## http://www.apache.org/licenses/LICENSE-2.0## Unless required by applicable law or agreed to in writing, software# distributed under the License is distributed on an "AS IS" BASIS,# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.# See the License for the specific language governing permissions and# limitations under the License.importunittestimportpaddle.v2.fluidasfluidclassTestCSPFramework(unittest.TestCase):defdaisy_chain(self):n=10000leftmost=fluid.make_channel(dtype=int)right=leftmostleft=leftmostwithfluid.While(steps=n):right=fluid.make_channel(dtype=int)withfluid.go():fluid.send(left,1+fluid.recv(right))left=rightwithfluid.go():fluid.send(right,1)fluid.Print(fluid.recv(leftmost))if__name__=='__main__':unittest.main()