test/std/time/time.point/time.point.comparisons/op_less.pass.cpp

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// <chrono>

// time_point

// template <class Clock, class Duration1, class Duration2>
//   bool
//   operator< (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);

// template <class Clock, class Duration1, class Duration2>
//   bool
//   operator> (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);

// template <class Clock, class Duration1, class Duration2>
//   bool
//   operator<=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);

// template <class Clock, class Duration1, class Duration2>
//   bool
//   operator>=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);

#include <chrono>
#include <cassert>

#include "test_macros.h"

int main(int, char**)
{
    typedef std::chrono::system_clock Clock;
    typedef std::chrono::milliseconds Duration1;
    typedef std::chrono::microseconds Duration2;
    typedef std::chrono::time_point<Clock, Duration1> T1;
    typedef std::chrono::time_point<Clock, Duration2> T2;

    {
    T1 t1(Duration1(3));
    T1 t2(Duration1(3));
    assert(!(t1 <  t2));
    assert(!(t1 >  t2));
    assert( (t1 <= t2));
    assert( (t1 >= t2));
    }
    {
    T1 t1(Duration1(3));
    T1 t2(Duration1(4));
    assert( (t1 <  t2));
    assert(!(t1 >  t2));
    assert( (t1 <= t2));
    assert(!(t1 >= t2));
    }
    {
    T1 t1(Duration1(3));
    T2 t2(Duration2(3000));
    assert(!(t1 <  t2));
    assert(!(t1 >  t2));
    assert( (t1 <= t2));
    assert( (t1 >= t2));
    }
    {
    T1 t1(Duration1(3));
    T2 t2(Duration2(3001));
    assert( (t1 <  t2));
    assert(!(t1 >  t2));
    assert( (t1 <= t2));
    assert(!(t1 >= t2));
    }

#if TEST_STD_VER > 11
    {
    constexpr T1 t1(Duration1(3));
    constexpr T1 t2(Duration1(3));
    static_assert(!(t1 <  t2), "");
    static_assert(!(t1 >  t2), "");
    static_assert( (t1 <= t2), "");
    static_assert( (t1 >= t2), "");
    }
    {
    constexpr T1 t1(Duration1(3));
    constexpr T1 t2(Duration1(4));
    static_assert( (t1 <  t2), "");
    static_assert(!(t1 >  t2), "");
    static_assert( (t1 <= t2), "");
    static_assert(!(t1 >= t2), "");
    }
    {
    constexpr T1 t1(Duration1(3));
    constexpr T2 t2(Duration2(3000));
    static_assert(!(t1 <  t2), "");
    static_assert(!(t1 >  t2), "");
    static_assert( (t1 <= t2), "");
    static_assert( (t1 >= t2), "");
    }
    {
    constexpr T1 t1(Duration1(3));
    constexpr T2 t2(Duration2(3001));
    static_assert( (t1 <  t2), "");
    static_assert(!(t1 >  t2), "");
    static_assert( (t1 <= t2), "");
    static_assert(!(t1 >= t2), "");
    }
#endif

  return 0;
}