41 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;12 13// constexpr bool ok() const noexcept;14// Returns: 1 <= d_ && d_ <= 1215 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 27 ASSERT_NOEXCEPT( std::declval<const month>().ok());28 ASSERT_SAME_TYPE(bool, decltype(std::declval<const month>().ok()));29 30 static_assert(!month{0}.ok(), "");31 static_assert( month{1}.ok(), "");32 33 assert(!month{0}.ok());34 for (unsigned i = 1; i <= 12; ++i)35 assert(month{i}.ok());36 for (unsigned i = 13; i <= 255; ++i)37 assert(!month{i}.ok());38 39 return 0;40}41