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