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;
13 //   month_weekday represents the nth weekday of a month, of an as yet unspecified year.
14 
15 //  constexpr month_weekday(const chrono::month& m, const chrono::weekday_indexed& wdi) noexcept;
16 //    Effects:  Constructs an object of type month_weekday by initializing m_ with m, and wdi_ with wdi.
17 //
18 //  constexpr chrono::month                     month() const noexcept;
19 //  constexpr chrono::weekday_indexed weekday_indexed() const noexcept;
20 //  constexpr bool                                 ok() const noexcept;
21 
22 #include <chrono>
23 #include <type_traits>
24 #include <cassert>
25 
26 #include "test_macros.h"
27 
main()28 int main()
29 {
30     using month_weekday   = std::chrono::month_weekday;
31     using month           = std::chrono::month;
32     using weekday         = std::chrono::weekday;
33     using weekday_indexed = std::chrono::weekday_indexed;
34 
35     ASSERT_NOEXCEPT(month_weekday{month{1}, weekday_indexed{weekday{}, 1}});
36 
37     constexpr month_weekday md0{month{}, weekday_indexed{}};
38     static_assert( md0.month()           == month{},           "");
39     static_assert( md0.weekday_indexed() == weekday_indexed{}, "");
40     static_assert(!md0.ok(),                                   "");
41 
42     constexpr month_weekday md1{std::chrono::January, weekday_indexed{std::chrono::Friday, 4}};
43     static_assert( md1.month() == std::chrono::January,                              "");
44     static_assert( md1.weekday_indexed() == weekday_indexed{std::chrono::Friday, 4}, "");
45     static_assert( md1.ok(),                                                         "");
46 }
47