time-unit-test-clock.hpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2013-2021 Regents of the University of California.
 *
 * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
 *
 * ndn-cxx library is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later version.
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 * PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
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 * You should have received copies of the GNU General Public License and GNU Lesser
 * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
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 * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
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#ifndef NDN_CXX_UTIL_TIME_UNIT_TEST_CLOCK_HPP
#define NDN_CXX_UTIL_TIME_UNIT_TEST_CLOCK_HPP
 
#include "ndn-cxx/util/time-custom-clock.hpp"
 
namespace ndn {
namespace time {
 
template<class BaseClock>
class UnitTestClockTraits
{
public:
  static nanoseconds
  getDefaultStartTime()
  {
    return nanoseconds::zero();
  }
};
 
template<>
class UnitTestClockTraits<system_clock>
{
public:
  static nanoseconds
  getDefaultStartTime()
  {
    return seconds(1415684132);
  }
};
 
template<class BaseClock, class ClockTraits = UnitTestClockTraits<BaseClock>>
class UnitTestClock : public CustomClock<BaseClock>
{
public:
  explicit
  UnitTestClock(nanoseconds startTime = ClockTraits::getDefaultStartTime());
 
  void
  advance(nanoseconds duration);
 
  void
  setNow(nanoseconds timeSinceEpoch);
 
public:
  std::string
  getSince() const override;
 
  typename BaseClock::time_point
  getNow() const override;
 
  typename BaseClock::duration
  toWaitDuration(typename BaseClock::duration d) const override;
 
private:
  nanoseconds m_currentTime;
};
 
extern template class UnitTestClock<system_clock>;
extern template class UnitTestClock<steady_clock>;
 
using UnitTestSystemClock = UnitTestClock<system_clock>;
using UnitTestSteadyClock = UnitTestClock<steady_clock>;
 
} // namespace time
} // namespace ndn
 
#endif // NDN_CXX_UTIL_TIME_UNIT_TEST_CLOCK_HPP