test/std/utilities/time/time.duration/time.duration.cons/convert_exact.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>

// duration

// template <class Rep2, class Period2>
//   duration(const duration<Rep2, Period2>& d);

// exact conversions allowed for integral reps

#include <chrono>
#include <cassert>

#include "test_macros.h"

int main(int, char**)
{
    {
    std::chrono::milliseconds ms(1);
    std::chrono::microseconds us = ms;
    assert(us.count() == 1000);
    }
#if TEST_STD_VER >= 11
    {
    constexpr std::chrono::milliseconds ms(1);
    constexpr std::chrono::microseconds us = ms;
    static_assert(us.count() == 1000, "");
    }
#endif

  return 0;
}