54 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;12 13// constexpr bool ok() const noexcept;14// Returns: m_.ok() && wdi_.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_weekday = std::chrono::month_weekday;26 using month = std::chrono::month;27 using weekday = std::chrono::weekday;28 using weekday_indexed = std::chrono::weekday_indexed;29 30 constexpr weekday Sunday = std::chrono::Sunday;31 32 ASSERT_NOEXCEPT( std::declval<const month_weekday>().ok());33 ASSERT_SAME_TYPE(bool, decltype(std::declval<const month_weekday>().ok()));34 35 static_assert(!month_weekday{month{}, weekday_indexed{}}.ok(), "");36 static_assert( month_weekday{std::chrono::May, weekday_indexed{Sunday, 2}}.ok(), "");37 38 assert(!(month_weekday(std::chrono::April, weekday_indexed{Sunday, 0}).ok()));39 assert( (month_weekday{std::chrono::March, weekday_indexed{Sunday, 1}}.ok()));40 41 for (unsigned i = 1; i <= 12; ++i)42 for (unsigned j = 0; j <= 6; ++j)43 {44 month_weekday mwd{month{i}, weekday_indexed{Sunday, j}};45 assert(mwd.ok() == (j >= 1 && j <= 5));46 }47 48 // If the month is not ok, all the weekday_indexed are bad49 for (unsigned i = 1; i <= 10; ++i)50 assert(!(month_weekday{month{13}, weekday_indexed{Sunday, i}}.ok()));51 52 return 0;53}54