1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 // UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
10 
11 // <chrono>
12 // class year_month;
13 
14 // constexpr chrono::day day() const noexcept;
15 //  Returns: d_
16 
17 #include <chrono>
18 #include <type_traits>
19 #include <cassert>
20 
21 #include "test_macros.h"
22 
main()23 int main()
24 {
25     using year       = std::chrono::year;
26     using month      = std::chrono::month;
27     using year_month = std::chrono::year_month;
28 
29     ASSERT_NOEXCEPT(                std::declval<const year_month>().year());
30     ASSERT_SAME_TYPE(year, decltype(std::declval<const year_month>().year()));
31 
32     static_assert( year_month{}.year() == year{}, "");
33 
34     for (int i = 1; i <= 50; ++i)
35     {
36         year_month ym(year{i}, month{});
37         assert( static_cast<int>(ym.year()) == i);
38     }
39 }
40