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 weekday_indexed;
13 
14 // constexpr bool ok() const noexcept;
15 //  Returns: wd_.ok() && 1 <= index_ && index_ <= 5
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 weekday         = std::chrono::weekday;
26     using weekday_indexed = std::chrono::weekday_indexed;
27 
28     ASSERT_NOEXCEPT(                std::declval<const weekday_indexed>().ok());
29     ASSERT_SAME_TYPE(bool, decltype(std::declval<const weekday_indexed>().ok()));
30 
31     static_assert(!weekday_indexed{}.ok(),                       "");
32     static_assert( weekday_indexed{std::chrono::Sunday, 2}.ok(), "");
33 
34     assert(!(weekday_indexed(std::chrono::Tuesday, 0).ok()));
35     for (unsigned i = 1; i <= 5; ++i)
36     {
37         weekday_indexed wdi(std::chrono::Tuesday, i);
38         assert( wdi.ok());
39     }
40 
41     for (unsigned i = 6; i <= 20; ++i)
42     {
43         weekday_indexed wdi(std::chrono::Tuesday, i);
44         assert(!wdi.ok());
45     }
46 
47 //  Not a valid weekday
48     assert(!(weekday_indexed(weekday{9U}, 1).ok()));
49 }
50