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 // year_month() = default;
14 // constexpr year_month(const chrono::year& y, const chrono::month& m) noexcept;
15 //
16 // Effects: Constructs an object of type year_month by initializing y_ with y, and m_ with m.
17 //
18 // constexpr chrono::year year() const noexcept;
19 // constexpr chrono::month month() 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(int,char **)28 int main(int, char**)
29 {
30 using year = std::chrono::year;
31 using month = std::chrono::month;
32 using year_month = std::chrono::year_month;
33
34 ASSERT_NOEXCEPT(year_month{});
35 ASSERT_NOEXCEPT(year_month{year{1}, month{1}});
36
37 constexpr year_month ym0{};
38 static_assert( ym0.year() == year{}, "");
39 static_assert( ym0.month() == month{}, "");
40 static_assert(!ym0.ok(), "");
41
42 constexpr year_month ym1{year{2018}, std::chrono::January};
43 static_assert( ym1.year() == year{2018}, "");
44 static_assert( ym1.month() == std::chrono::January, "");
45 static_assert( ym1.ok(), "");
46
47 constexpr year_month ym2{year{2018}, month{}};
48 static_assert( ym2.year() == year{2018}, "");
49 static_assert( ym2.month() == month{}, "");
50 static_assert(!ym2.ok(), "");
51
52 return 0;
53 }
54