text: // Copyright (c) 2014-2018, The Cred Project
  // 
  // All rights reserved.
  // 
  // Redistribution and use in source and binary forms, with or without modification, are
  // permitted provided that the following conditions are met:
  // 
  // 1. Redistributions of source code must retain the above copyright notice, this list of
  //    conditions and the following disclaimer.
  // 
  // 2. Redistributions in binary form must reproduce the above copyright notice, this list
  //    of conditions and the following disclaimer in the documentation and/or other
  //    materials provided with the distribution.
  // 
  // 3. Neither the name of the copyright holder nor the names of its contributors may be
  //    used to endorse or promote products derived from this software without specific
  //    prior written permission.
  // 
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
  // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  // THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
  // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  // 
  // Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
  
  #pragma once
  
  #include <atomic>
  #include <boost/filesystem.hpp>
  
  namespace unit_test
  {
    extern boost::filesystem::path data_dir;
  
    class call_counter
    {
    public:
      call_counter()
        : m_counter(0)
      {
      }
  
      void inc() volatile
      {
        // memory_order_relaxed is enough for call counter
        m_counter.fetch_add(1, std::memory_order_relaxed);
      }
  
      size_t get() volatile const
      {
        return m_counter.load(std::memory_order_relaxed);
      }
  
      void reset() volatile
      {
        m_counter.store(0, std::memory_order_relaxed);
      }
  
    private:
      std::atomic<size_t> m_counter;
    };
  }
  
  # define ASSERT_EQ_MAP(val, map, key) \
    do { \
      auto found = map.find(key); \
      ASSERT_TRUE(found != map.end()); \
      ASSERT_EQ(val, found->second); \
    } while (false)
  