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 weekday;
12
13 // constexpr bool ok() const noexcept;
14 // Returns: wd_ <= 6
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 weekday = std::chrono::weekday;
25
26 ASSERT_NOEXCEPT( std::declval<const weekday>().ok());
27 ASSERT_SAME_TYPE(bool, decltype(std::declval<const weekday>().ok()));
28
29 static_assert( weekday{0}.ok(), "");
30 static_assert( weekday{1}.ok(), "");
31 static_assert( weekday{7}.ok(), ""); // 7 is transmogrified into 0 in the ctor
32 static_assert(!weekday{8}.ok(), "");
33
34 for (unsigned i = 0; i <= 7; ++i)
35 assert(weekday{i}.ok());
36 for (unsigned i = 8; i <= 255; ++i)
37 assert(!weekday{i}.ok());
38
39 return 0;
40 }
41