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;
12 
13 // constexpr chrono::day day() const noexcept;
14 //  Returns: d_
15 
16 #include <chrono>
17 #include <type_traits>
18 #include <cassert>
19 
20 #include "test_macros.h"
21 
main(int,char **)22 int main(int, char**)
23 {
24     using year       = std::chrono::year;
25     using month      = std::chrono::month;
26     using year_month = std::chrono::year_month;
27 
28     ASSERT_NOEXCEPT(                std::declval<const year_month>().year());
29     ASSERT_SAME_TYPE(year, decltype(std::declval<const year_month>().year()));
30 
31     static_assert( year_month{}.year() == year{}, "");
32 
33     for (int i = 1; i <= 50; ++i)
34     {
35         year_month ym(year{i}, month{});
36         assert( static_cast<int>(ym.year()) == i);
37     }
38 
39   return 0;
40 }
41