//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//  Adaptation to Boost of the libcxx
//  Copyright 2010 Vicente J. Botet Escriba
//  Distributed under the Boost Software License, Version 1.0.
//  See http://www.boost.org/LICENSE_1_0.txt

#include <boost/chrono.hpp>
#include <boost/detail/lightweight_test.hpp>

int main()
{
    {
        typedef boost::chrono::system_clock Clock;
        typedef boost::chrono::milliseconds Duration;
        boost::chrono::time_point<Clock, Duration> t(Duration(3));
        t += Duration(2);
        BOOST_TEST(t.time_since_epoch() == Duration(5));
    }
    {
        typedef boost::chrono::system_clock Clock;
        typedef boost::chrono::milliseconds Duration;
        boost::chrono::time_point<Clock, Duration> t(Duration(3));
        t -= Duration(2);
        BOOST_TEST(t.time_since_epoch() == Duration(1));
    }
    {
        typedef boost::chrono::system_clock Clock;
        typedef boost::chrono::milliseconds Duration1;
        typedef boost::chrono::microseconds Duration2;
        boost::chrono::time_point<Clock, Duration1> t1(Duration1(3));
        boost::chrono::time_point<Clock, Duration2> t2 = t1 - Duration2(5);
        BOOST_TEST(t2.time_since_epoch() == Duration2(2995));
    }
    {
        typedef boost::chrono::system_clock Clock;
        typedef boost::chrono::milliseconds Duration1;
        typedef boost::chrono::microseconds Duration2;
        boost::chrono::time_point<Clock, Duration1> t1(Duration1(3));
        boost::chrono::time_point<Clock, Duration2> t2(Duration2(5));
        BOOST_TEST((t1 - t2) == Duration2(2995));
    }
    {
        typedef boost::chrono::system_clock Clock;
        typedef boost::chrono::milliseconds Duration1;
        typedef boost::chrono::microseconds Duration2;
        boost::chrono::time_point<Clock, Duration1> t1(Duration1(3));
        boost::chrono::time_point<Clock, Duration2> t2 = t1 + Duration2(5);
        BOOST_TEST(t2.time_since_epoch() == Duration2(3005));
        t2 = Duration2(6) + t1;
        BOOST_TEST(t2.time_since_epoch() == Duration2(3006));
    }
    
    return boost::report_errors();
}