49 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_day_last;12 13// constexpr bool ok() const noexcept;14// Returns: m_.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 month_day_last = std::chrono::month_day_last;27 28 ASSERT_NOEXCEPT( std::declval<const month_day_last>().ok());29 ASSERT_SAME_TYPE(bool, decltype(std::declval<const month_day_last>().ok()));30 31 static_assert(!month_day_last{month{}}.ok(), "");32 static_assert( month_day_last{std::chrono::May}.ok(), "");33 34 for (unsigned i = 1; i <= 12; ++i)35 {36 month_day_last mdl{month{i}};37 assert( mdl.ok());38 }39 40 // If the month is not ok, all the days are bad41 for (unsigned i = 13; i <= 50; ++i)42 {43 month_day_last mdl{month{i}};44 assert(!mdl.ok());45 }46 47 return 0;48}49