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 // year_month() = default;
15 // constexpr year_month(const chrono::year& y, const chrono::month& m) noexcept;
16 //
17 // Effects: Constructs an object of type year_month by initializing y_ with y, and m_ with m.
18 //
19 // constexpr chrono::year year() const noexcept;
20 // constexpr chrono::month month() const noexcept;
21 // constexpr bool ok() const noexcept;
22
23 #include <chrono>
24 #include <type_traits>
25 #include <cassert>
26
27 #include "test_macros.h"
28
main()29 int main()
30 {
31 using year = std::chrono::year;
32 using month = std::chrono::month;
33 using year_month = std::chrono::year_month;
34
35 ASSERT_NOEXCEPT(year_month{});
36 ASSERT_NOEXCEPT(year_month{year{1}, month{1}});
37
38 constexpr year_month ym0{};
39 static_assert( ym0.year() == year{}, "");
40 static_assert( ym0.month() == month{}, "");
41 static_assert(!ym0.ok(), "");
42
43 constexpr year_month ym1{year{2018}, std::chrono::January};
44 static_assert( ym1.year() == year{2018}, "");
45 static_assert( ym1.month() == std::chrono::January, "");
46 static_assert( ym1.ok(), "");
47
48 constexpr year_month ym2{year{2018}, month{}};
49 static_assert( ym2.year() == year{2018}, "");
50 static_assert( ym2.month() == month{}, "");
51 static_assert(!ym2.ok(), "");
52 }
53