//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// <chrono>
// class year_month_weekday;
// constexpr year_month_weekday& operator+=(const years& d) noexcept;
// constexpr year_month_weekday& operator-=(const years& d) noexcept;
#include <chrono>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
using year = std::chrono::year;
using month = std::chrono::month;
using weekday = std::chrono::weekday;
using weekday_indexed = std::chrono::weekday_indexed;
using year_month_weekday = std::chrono::year_month_weekday;
using years = std::chrono::years;
constexpr bool test() {
constexpr weekday Tuesday = std::chrono::Tuesday;
constexpr month January = std::chrono::January;
for (int i = 1000; i <= 1010; ++i) {
year_month_weekday ymwd(year{i}, January, weekday_indexed{Tuesday, 2});
assert(static_cast<int>((ymwd += years{2}).year()) == i + 2);
assert(ymwd.month() == January);
assert(ymwd.weekday() == Tuesday);
assert(ymwd.index() == 2);
assert(static_cast<int>((ymwd).year()) == i + 2);
assert(ymwd.month() == January);
assert(ymwd.weekday() == Tuesday);
assert(ymwd.index() == 2);
assert(static_cast<int>((ymwd -= years{1}).year()) == i + 1);
assert(ymwd.month() == January);
assert(ymwd.weekday() == Tuesday);
assert(ymwd.index() == 2);
assert(static_cast<int>((ymwd).year()) == i + 1);
assert(ymwd.month() == January);
assert(ymwd.weekday() == Tuesday);
assert(ymwd.index() == 2);
}
return true;
}
int main(int, char**) {
ASSERT_NOEXCEPT(std::declval<year_month_weekday&>() += std::declval<years>());
ASSERT_SAME_TYPE(year_month_weekday&, decltype(std::declval<year_month_weekday&>() += std::declval<years>()));
ASSERT_NOEXCEPT(std::declval<year_month_weekday&>() -= std::declval<years>());
ASSERT_SAME_TYPE(year_month_weekday&, decltype(std::declval<year_month_weekday&>() -= std::declval<years>()));
test();
static_assert(test());
return 0;
}