| //===----------------------------------------------------------------------===// |
| // |
| // 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. |
| // |
| //===----------------------------------------------------------------------===// |
| // UNSUPPORTED: c++03, c++11, c++14, c++17 |
| |
| // <chrono> |
| // class year_month_day_last; |
| |
| // constexpr year_month_day_last& operator+=(const years& d) noexcept; |
| // constexpr year_month_day_last& operator-=(const years& d) noexcept; |
| |
| #include <chrono> |
| #include <type_traits> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| template <typename D, typename Ds> |
| constexpr bool testConstexpr(D d1) |
| { |
| if (static_cast<int>((d1 ).year()) != 1) return false; |
| if (static_cast<int>((d1 += Ds{ 1}).year()) != 2) return false; |
| if (static_cast<int>((d1 += Ds{ 2}).year()) != 4) return false; |
| if (static_cast<int>((d1 += Ds{12}).year()) != 16) return false; |
| if (static_cast<int>((d1 -= Ds{ 1}).year()) != 15) return false; |
| if (static_cast<int>((d1 -= Ds{ 2}).year()) != 13) return false; |
| if (static_cast<int>((d1 -= Ds{12}).year()) != 1) return false; |
| return true; |
| } |
| |
| int main() |
| { |
| using year = std::chrono::year; |
| using month = std::chrono::month; |
| using day = std::chrono::day; |
| using month_day_last = std::chrono::month_day_last; |
| using year_month_day_last = std::chrono::year_month_day_last; |
| using years = std::chrono::years; |
| |
| ASSERT_NOEXCEPT(std::declval<year_month_day_last&>() += std::declval<years>()); |
| ASSERT_NOEXCEPT(std::declval<year_month_day_last&>() -= std::declval<years>()); |
| |
| ASSERT_SAME_TYPE(year_month_day_last&, decltype(std::declval<year_month_day_last&>() += std::declval<years>())); |
| ASSERT_SAME_TYPE(year_month_day_last&, decltype(std::declval<year_month_day_last&>() -= std::declval<years>())); |
| |
| static_assert(testConstexpr<year_month_day_last, years>(year_month_day_last{year{1}, month_day_last{month{1}}}), ""); |
| |
| for (int i = 1000; i <= 1010; ++i) |
| { |
| month_day_last mdl{month{2}}; |
| year_month_day_last ymdl(year{i}, mdl); |
| assert(static_cast<int>((ymdl += years{2}).year()) == i + 2); |
| assert(ymdl.month_day_last() == mdl); |
| assert(static_cast<int>((ymdl ).year()) == i + 2); |
| assert(ymdl.month_day_last() == mdl); |
| assert(static_cast<int>((ymdl -= years{1}).year()) == i + 1); |
| assert(ymdl.month_day_last() == mdl); |
| assert(static_cast<int>((ymdl ).year()) == i + 1); |
| assert(ymdl.month_day_last() == mdl); |
| } |
| } |