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 month_weekday;
12
13 // constexpr bool ok() const noexcept;
14 // Returns: m_.ok() && wdi_.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 month_weekday = std::chrono::month_weekday;
25 using month = std::chrono::month;
26 using weekday = std::chrono::weekday;
27 using weekday_indexed = std::chrono::weekday_indexed;
28
29 constexpr weekday Sunday = std::chrono::Sunday;
30
31 ASSERT_NOEXCEPT( std::declval<const month_weekday>().ok());
32 ASSERT_SAME_TYPE(bool, decltype(std::declval<const month_weekday>().ok()));
33
34 static_assert(!month_weekday{month{}, weekday_indexed{}}.ok(), "");
35 static_assert( month_weekday{std::chrono::May, weekday_indexed{Sunday, 2}}.ok(), "");
36
37 assert(!(month_weekday(std::chrono::April, weekday_indexed{Sunday, 0}).ok()));
38 assert( (month_weekday{std::chrono::March, weekday_indexed{Sunday, 1}}.ok()));
39
40 for (unsigned i = 1; i <= 12; ++i)
41 for (unsigned j = 0; j <= 6; ++j)
42 {
43 month_weekday mwd{month{i}, weekday_indexed{Sunday, j}};
44 assert(mwd.ok() == (j >= 1 && j <= 5));
45 }
46
47 // If the month is not ok, all the weekday_indexed are bad
48 for (unsigned i = 1; i <= 10; ++i)
49 assert(!(month_weekday{month{13}, weekday_indexed{Sunday, i}}.ok()));
50
51 return 0;
52 }
53