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 day;
12
13// constexpr bool ok() const noexcept;
14// Returns: 1 <= d_ && d_ <= 31
15
16#include <chrono>
17#include <cassert>
18#include <type_traits>
19#include <utility>
20
21#include "test_macros.h"
22
23int main(int, char**)
24{
25 using day = std::chrono::day;
26 ASSERT_NOEXCEPT( std::declval<const day>().ok());
27 ASSERT_SAME_TYPE(bool, decltype(std::declval<const day>().ok()));
28
29 static_assert(!day{0}.ok(), "");
30 static_assert( day{1}.ok(), "");
31
32 assert(!day{0}.ok());
33 for (unsigned i = 1; i <= 31; ++i)
34 assert(day{i}.ok());
35 for (unsigned i = 32; i <= 255; ++i)
36 assert(!day{i}.ok());
37
38 return 0;
39}
40

source code of libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.members/ok.pass.cpp