text: # Copyright (c) 2020 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.
  
  import unittest
  import paddle.fluid as fluid
  import paddle.fluid.incubate.fleet.base.role_maker as role_maker
  from paddle.fluid.incubate.fleet.collective import CollectiveOptimizer, fleet
  import os
  import sys
  import inspect
  
  from paddle.distributed.fleet.utils.fs import LocalFS, FS, HDFSClient, FSTimeOut, FSFileExistsError, FSFileNotExistsError
  
  
  class FSTest(unittest.TestCase):
  
      def _test_method(self, func):
          if sys.version_info[0] <= 2:
              args = inspect.getargspec(func).args
          else:
              args = inspect.getfullargspec(func).args
  
          a = None
          try:
              if len(args) == 1:
                  func()
              elif len(args) == 2:
                  func(a)
              elif len(args) == 3:
                  func(a, a)
              elif len(args) == 5:
                  func(a, a, a, a)
              print("args:", args, len(args), "func:", func)
              self.assertFalse(True)
          except NotImplementedError as e:
              pass
  
      def test(self):
          fs = FS()
          for name, func in inspect.getmembers(fs, predicate=inspect.ismethod):
              self._test_method(func)
  
  
  if __name__ == '__main__':
      unittest.main()
  