forked from mirror/libcxx
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
51 lines
1.5 KiB
C++
51 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
|
|
|
|
// <chrono>
|
|
// class year_month;
|
|
|
|
// constexpr bool ok() const noexcept;
|
|
// Returns: m_.ok() && y_.ok().
|
|
|
|
#include <chrono>
|
|
#include <type_traits>
|
|
#include <cassert>
|
|
|
|
#include "test_macros.h"
|
|
|
|
int main()
|
|
{
|
|
using month = std::chrono::month;
|
|
using year = std::chrono::year;
|
|
using year_month = std::chrono::year_month;
|
|
|
|
constexpr month January = std::chrono::January;
|
|
|
|
ASSERT_NOEXCEPT( std::declval<const year_month>().ok());
|
|
ASSERT_SAME_TYPE(bool, decltype(std::declval<const year_month>().ok()));
|
|
|
|
static_assert(!year_month{year{-32768}, January}.ok(), ""); // Bad year
|
|
static_assert(!year_month{year{2019}, month{}}.ok(), ""); // Bad month
|
|
static_assert( year_month{year{2019}, January}.ok(), ""); // Both OK
|
|
|
|
for (unsigned i = 0; i <= 50; ++i)
|
|
{
|
|
year_month ym{year{2019}, month{i}};
|
|
assert( ym.ok() == month{i}.ok());
|
|
}
|
|
|
|
const int ymax = static_cast<int>(year::max());
|
|
for (int i = ymax - 100; i <= ymax + 100; ++i)
|
|
{
|
|
year_month ym{year{i}, January};
|
|
assert( ym.ok() == year{i}.ok());
|
|
}
|
|
}
|