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52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
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// <chrono>
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// class year_month;
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// constexpr bool ok() const noexcept;
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// Returns: m_.ok() && y_.ok().
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#include <chrono>
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#include <type_traits>
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#include <cassert>
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#include "test_macros.h"
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int main(int, char**)
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{
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using month = std::chrono::month;
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using year = std::chrono::year;
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using year_month = std::chrono::year_month;
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constexpr month January = std::chrono::January;
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ASSERT_NOEXCEPT( std::declval<const year_month>().ok());
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ASSERT_SAME_TYPE(bool, decltype(std::declval<const year_month>().ok()));
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static_assert(!year_month{year{-32768}, January}.ok(), ""); // Bad year
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static_assert(!year_month{year{2019}, month{}}.ok(), ""); // Bad month
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static_assert( year_month{year{2019}, January}.ok(), ""); // Both OK
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for (unsigned i = 0; i <= 50; ++i)
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{
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year_month ym{year{2019}, month{i}};
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assert( ym.ok() == month{i}.ok());
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}
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const int ymax = static_cast<int>(year::max());
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for (int i = ymax - 100; i <= ymax + 100; ++i)
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{
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year_month ym{year{i}, January};
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assert( ym.ok() == year{i}.ok());
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}
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return 0;
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}
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