52 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 operator==(const day& x, const day& y) noexcept;14// Returns: unsigned{x} == unsigned{y}.15// constexpr strong_ordering operator<=>(const day& x, const day& y) noexcept;16// Returns: unsigned{x} <=> unsigned{y}.17 18#include <chrono>19#include <type_traits>20#include <cassert>21 22#include "test_macros.h"23#include "test_comparisons.h"24 25constexpr bool test() {26 using day = std::chrono::day;27 28 // Validate invalid values. The range [0, 255] is guaranteed to be allowed.29 assert(testOrderValues<day>(0U, 0U));30 assert(testOrderValues<day>(0U, 1U));31 assert(testOrderValues<day>(254U, 255U));32 assert(testOrderValues<day>(255U, 255U));33 34 // Validate some valid values.35 for (unsigned i = 1; i < 10; ++i)36 for (unsigned j = 1; j < 10; ++j)37 assert(testOrderValues<day>(i, j));38 39 return true;40}41 42int main(int, char**) {43 using day = std::chrono::day;44 AssertOrderAreNoexcept<day>();45 AssertOrderReturn<std::strong_ordering, day>();46 47 test();48 static_assert(test());49 50 return 0;51}52