text: //*****************************************************************************
  // Copyright 2017-2021 Intel Corporation
  //
  // 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.
  //*****************************************************************************
  
  #include "ngraph/provenance.hpp"
  
  namespace ngraph
  {
      namespace test
      {
          /// \brief Enable provenance for the duration of a unit test.
          ///
          /// During creation this object activates provenance support, when it's destroyed
          /// it returns the provenance support to previous state.
          class ProvenanceEnabler
          {
          public:
              ProvenanceEnabler()
              {
                  saved_enable_state = get_provenance_enabled();
                  set_provenance_enabled(true);
              }
              ~ProvenanceEnabler() { set_provenance_enabled(saved_enable_state); }
  
          private:
              bool saved_enable_state;
          };
      }
  }
  