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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// <chrono>
// class month;
// constexpr month& operator++() noexcept;
// constexpr month operator++(int) noexcept;
#include <chrono>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
constexpr bool test() {
using month = std::chrono::month;
for (unsigned i = 0; i <= 15; ++i) {
month m1(i);
month m2 = m1++;
assert(m1.ok());
assert(m1 != m2);
unsigned exp = i + 1;
while (exp > 12)
exp -= 12;
assert(static_cast<unsigned>(m1) == exp);
}
for (unsigned i = 0; i <= 15; ++i) {
month m1(i);
month m2 = ++m1;
assert(m1.ok());
assert(m2.ok());
assert(m1 == m2);
unsigned exp = i + 1;
while (exp > 12)
exp -= 12;
assert(static_cast<unsigned>(m1) == exp);
}
return true;
}
int main(int, char**) {
using month = std::chrono::month;
ASSERT_NOEXCEPT(++(std::declval<month&>()));
ASSERT_NOEXCEPT((std::declval<month&>())++);
ASSERT_SAME_TYPE(month, decltype(std::declval<month&>()++));
ASSERT_SAME_TYPE(month&, decltype(++std::declval<month&>()));
test();
static_assert(test());
return 0;
}
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