42 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 weekday_indexed;12 13// constexpr unsigned index() const noexcept;14// Returns: index_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 weekday = std::chrono::weekday;26 using weekday_indexed = std::chrono::weekday_indexed;27 28 ASSERT_NOEXCEPT( std::declval<const weekday_indexed>().index());29 ASSERT_SAME_TYPE(unsigned, decltype(std::declval<const weekday_indexed>().index()));30 31 static_assert( weekday_indexed{}.index() == 0, "");32 33 // This is the valid range of values defined in [time.cal.wdidx.members]/1.34 for (unsigned i = 0; i <= 7; ++i)35 {36 weekday_indexed wdi(weekday{2}, i);37 assert( static_cast<unsigned>(wdi.index()) == i);38 }39 40 return 0;41}42