text: # Copyright 2017 The TensorFlow 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.
  # ==============================================================================
  """Tests for context_managers module."""
  
  from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  
  from tensorflow.contrib.py2tf.utils import context_managers
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.ops import tensor_array_ops
  from tensorflow.python.platform import test
  
  
  class ContextManagersTest(test.TestCase):
  
    def test_control_dependency_on_returns(self):
      # Just dry run them.
      with context_managers.control_dependency_on_returns(None):
        pass
      with context_managers.control_dependency_on_returns(
          constant_op.constant(1)):
        pass
      with context_managers.control_dependency_on_returns(
          tensor_array_ops.TensorArray(dtypes.int32, size=1)):
        pass
      with context_managers.control_dependency_on_returns(
          [constant_op.constant(1),
           constant_op.constant(2)]):
        pass
  
  
  if __name__ == '__main__':
    test.main()
  