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57 lines
2.0 KiB
C++
57 lines
2.0 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 month_day;
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// constexpr bool ok() const noexcept;
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// Returns: true if m_.ok() is true, 1d <= d_, and d_ is less than or equal to the
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// number of days in month m_; otherwise returns false.
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// When m_ == February, the number of days is considered to be 29.
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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 day = std::chrono::day;
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using month = std::chrono::month;
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using month_day = std::chrono::month_day;
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ASSERT_NOEXCEPT( std::declval<const month_day>().ok());
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ASSERT_SAME_TYPE(bool, decltype(std::declval<const month_day>().ok()));
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static_assert(!month_day{}.ok(), "");
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static_assert( month_day{std::chrono::May, day{2}}.ok(), "");
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assert(!(month_day(std::chrono::April, day{0}).ok()));
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assert( (month_day{std::chrono::March, day{1}}.ok()));
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for (unsigned i = 1; i <= 12; ++i)
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{
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const bool is31 = i == 1 || i == 3 || i == 5 || i == 7 || i == 8 || i == 10 || i == 12;
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assert(!(month_day{month{i}, day{ 0}}.ok()));
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assert( (month_day{month{i}, day{ 1}}.ok()));
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assert( (month_day{month{i}, day{10}}.ok()));
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assert( (month_day{month{i}, day{29}}.ok()));
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assert( (month_day{month{i}, day{30}}.ok()) == (i != 2));
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assert( (month_day{month{i}, day{31}}.ok()) == is31);
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assert(!(month_day{month{i}, day{32}}.ok()));
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}
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// If the month is not ok, all the days are bad
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for (unsigned i = 1; i <= 35; ++i)
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assert(!(month_day{month{13}, day{i}}.ok()));
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return 0;
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}
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