55 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8// UNSUPPORTED: c++03, c++11, c++14, c++179 10// <chrono>11// class month_weekday_last;12 13// constexpr bool ok() const noexcept;14// Returns: m_.ok() && wdl_.ok().15 16#include <chrono>17#include <cassert>18#include <type_traits>19#include <utility>20 21#include "test_macros.h"22 23int main(int, char**)24{25 using month = std::chrono::month;26 using weekday = std::chrono::weekday;27 using weekday_last = std::chrono::weekday_last;28 using month_weekday_last = std::chrono::month_weekday_last;29 30 constexpr month January = std::chrono::January;31 constexpr weekday Tuesday = std::chrono::Tuesday;32 constexpr weekday_last lastTuesday = weekday_last{Tuesday};33 34 ASSERT_NOEXCEPT( std::declval<const month_weekday_last>().ok());35 ASSERT_SAME_TYPE(bool, decltype(std::declval<const month_weekday_last>().ok()));36 37 static_assert(!month_weekday_last{month{}, lastTuesday}.ok(), ""); // Bad month38 static_assert(!month_weekday_last{January, weekday_last{weekday{12}}}.ok(), ""); // Bad month39 static_assert( month_weekday_last{January, lastTuesday}.ok(), ""); // Both OK40 41 for (unsigned i = 0; i <= 50; ++i)42 {43 month_weekday_last mwdl{month{i}, lastTuesday};44 assert( mwdl.ok() == month{i}.ok());45 }46 47 for (unsigned i = 0; i <= 50; ++i)48 {49 month_weekday_last mwdl{January, weekday_last{weekday{i}}};50 assert( mwdl.ok() == weekday_last{weekday{i}}.ok());51 }52 53 return 0;54}55