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 month_weekday_last;
13 
14 // constexpr chrono::month month() const noexcept;
15 //  Returns: m_
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 month              = std::chrono::month;
26     using weekday            = std::chrono::weekday;
27     using weekday_last       = std::chrono::weekday_last;
28     using month_weekday_last = std::chrono::month_weekday_last;
29 
30     constexpr weekday Tuesday = std::chrono::Tuesday;
31 
32     ASSERT_NOEXCEPT(                 std::declval<const month_weekday_last>().month());
33     ASSERT_SAME_TYPE(month, decltype(std::declval<const month_weekday_last>().month()));
34 
35     static_assert( month_weekday_last{month{}, weekday_last{Tuesday}}.month() == month{}, "");
36 
37     for (unsigned i = 1; i <= 50; ++i)
38     {
39         month_weekday_last mdl(month{i}, weekday_last{Tuesday});
40         assert( static_cast<unsigned>(mdl.month()) == i);
41     }
42 }
43