40 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 day;12 13// constexpr bool ok() const noexcept;14// Returns: 1 <= d_ && d_ <= 3115 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 day = std::chrono::day;26 ASSERT_NOEXCEPT( std::declval<const day>().ok());27 ASSERT_SAME_TYPE(bool, decltype(std::declval<const day>().ok()));28 29 static_assert(!day{0}.ok(), "");30 static_assert( day{1}.ok(), "");31 32 assert(!day{0}.ok());33 for (unsigned i = 1; i <= 31; ++i)34 assert(day{i}.ok());35 for (unsigned i = 32; i <= 255; ++i)36 assert(!day{i}.ok());37 38 return 0;39}40