50 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 operator==(const month& x, const month& y) noexcept;14// constexpr strong_ordering operator<=>(const month& x, const month& y) noexcept;15 16#include <chrono>17#include <type_traits>18#include <cassert>19 20#include "test_macros.h"21#include "test_comparisons.h"22 23constexpr bool test() {24 using month = std::chrono::month;25 26 // Validate invalid values. The range [0, 255] is guaranteed to be allowed.27 assert(testOrderValues<month>(0U, 0U));28 assert(testOrderValues<month>(0U, 1U));29 assert(testOrderValues<month>(254U, 255U));30 assert(testOrderValues<month>(255U, 255U));31 32 // Validate some valid values.33 for (unsigned i = 1; i <= 12; ++i)34 for (unsigned j = 1; j <= 12; ++j)35 assert(testOrderValues<month>(i, j));36 37 return true;38}39 40int main(int, char**) {41 using month = std::chrono::month;42 AssertOrderAreNoexcept<month>();43 AssertOrderReturn<std::strong_ordering, month>();44 45 test();46 static_assert(test());47 48 return 0;49}50