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_day_last;
12
13 // constexpr bool ok() const noexcept;
14 // Returns: m_.ok() && y_.ok().
15
16 #include <chrono>
17 #include <type_traits>
18 #include <cassert>
19
20 #include "test_macros.h"
21
main(int,char **)22 int main(int, char**)
23 {
24 using year = std::chrono::year;
25 using month = std::chrono::month;
26 using month_day_last = std::chrono::month_day_last;
27 using year_month_day_last = std::chrono::year_month_day_last;
28
29 constexpr month January = std::chrono::January;
30
31 ASSERT_NOEXCEPT( std::declval<const year_month_day_last>().ok());
32 ASSERT_SAME_TYPE(bool, decltype(std::declval<const year_month_day_last>().ok()));
33
34 static_assert(!year_month_day_last{year{-32768}, month_day_last{month{}}}.ok(), ""); // both bad
35 static_assert(!year_month_day_last{year{-32768}, month_day_last{January}}.ok(), ""); // Bad year
36 static_assert(!year_month_day_last{year{2019}, month_day_last{month{}}}.ok(), ""); // Bad month
37 static_assert( year_month_day_last{year{2019}, month_day_last{January}}.ok(), ""); // All OK
38
39 for (unsigned i = 0; i <= 50; ++i)
40 {
41 year_month_day_last ym{year{2019}, month_day_last{month{i}}};
42 assert( ym.ok() == month{i}.ok());
43 }
44
45 const int ymax = static_cast<int>(year::max());
46 for (int i = ymax - 100; i <= ymax + 100; ++i)
47 {
48 year_month_day_last ym{year{i}, month_day_last{January}};
49 assert( ym.ok() == year{i}.ok());
50 }
51
52 return 0;
53 }
54