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-exception
6//
7//===----------------------------------------------------------------------===//
8// UNSUPPORTED: c++03, c++11, c++14, c++17
9
10// <chrono>
11// class year_month_weekday;
12
13// constexpr unsigned index() const noexcept;
14// Returns: wdi_.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 year = std::chrono::year;
26 using month = std::chrono::month;
27 using weekday = std::chrono::weekday;
28 using weekday_indexed = std::chrono::weekday_indexed;
29 using year_month_weekday = std::chrono::year_month_weekday;
30
31 ASSERT_NOEXCEPT( std::declval<const year_month_weekday>().index());
32 ASSERT_SAME_TYPE(unsigned, decltype(std::declval<const year_month_weekday>().index()));
33
34 static_assert( year_month_weekday{}.index() == 0, "");
35
36 for (unsigned i = 1; i <= 50; ++i)
37 {
38 year_month_weekday ymwd0(year{1234}, month{2}, weekday_indexed{weekday{2}, i});
39 assert(ymwd0.index() == i);
40 }
41
42 return 0;
43}
44

source code of libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/index.pass.cpp