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.
101 lines
3.5 KiB
C++
101 lines
3.5 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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++98, c++03, c++11, c++14, c++17
|
|
|
|
// <chrono>
|
|
// class year_month_weekday;
|
|
|
|
// constexpr year_month_weekday operator-(const year_month_weekday& ymwd, const months& dm) noexcept;
|
|
// Returns: ymwd + (-dm).
|
|
//
|
|
// constexpr year_month_weekday operator-(const year_month_weekday& ymwd, const years& dy) noexcept;
|
|
// Returns: ymwd + (-dy).
|
|
|
|
|
|
#include <chrono>
|
|
#include <type_traits>
|
|
#include <cassert>
|
|
|
|
#include "test_macros.h"
|
|
|
|
|
|
constexpr bool testConstexprYears ()
|
|
{
|
|
std::chrono::year_month_weekday ym0{std::chrono::year{1234}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::Tuesday, 1}};
|
|
std::chrono::year_month_weekday ym1 = ym0 - std::chrono::years{10};
|
|
return
|
|
ym1.year() == std::chrono::year{1234-10}
|
|
&& ym1.month() == std::chrono::January
|
|
&& ym1.weekday() == std::chrono::Tuesday
|
|
&& ym1.index() == 1
|
|
;
|
|
}
|
|
|
|
constexpr bool testConstexprMonths ()
|
|
{
|
|
std::chrono::year_month_weekday ym0{std::chrono::year{1234}, std::chrono::November, std::chrono::weekday_indexed{std::chrono::Tuesday, 1}};
|
|
std::chrono::year_month_weekday ym1 = ym0 - std::chrono::months{6};
|
|
return
|
|
ym1.year() == std::chrono::year{1234}
|
|
&& ym1.month() == std::chrono::May
|
|
&& ym1.weekday() == std::chrono::Tuesday
|
|
&& ym1.index() == 1
|
|
;
|
|
}
|
|
|
|
|
|
int main(int, char**)
|
|
{
|
|
using year = std::chrono::year;
|
|
using month = std::chrono::month;
|
|
using weekday = std::chrono::weekday;
|
|
using weekday_indexed = std::chrono::weekday_indexed;
|
|
using year_month_weekday = std::chrono::year_month_weekday;
|
|
using years = std::chrono::years;
|
|
using months = std::chrono::months;
|
|
|
|
constexpr month November = std::chrono::November;
|
|
constexpr weekday Tuesday = std::chrono::Tuesday;
|
|
|
|
{ // year_month_weekday - years
|
|
ASSERT_NOEXCEPT( std::declval<year_month_weekday>() - std::declval<years>());
|
|
ASSERT_SAME_TYPE(year_month_weekday, decltype(std::declval<year_month_weekday>() - std::declval<years>()));
|
|
|
|
static_assert(testConstexprYears(), "");
|
|
|
|
year_month_weekday ym{year{1234}, November, weekday_indexed{Tuesday, 1}};
|
|
for (int i = 0; i <= 10; ++i)
|
|
{
|
|
year_month_weekday ym1 = ym - years{i};
|
|
assert(static_cast<int>(ym1.year()) == 1234 - i);
|
|
assert(ym1.month() == November);
|
|
assert(ym1.weekday() == Tuesday);
|
|
assert(ym1.index() == 1);
|
|
}
|
|
}
|
|
|
|
{ // year_month_weekday - months
|
|
ASSERT_NOEXCEPT( std::declval<year_month_weekday>() - std::declval<months>());
|
|
ASSERT_SAME_TYPE(year_month_weekday, decltype(std::declval<year_month_weekday>() - std::declval<months>()));
|
|
|
|
static_assert(testConstexprMonths(), "");
|
|
|
|
year_month_weekday ym{year{1234}, November, weekday_indexed{Tuesday, 2}};
|
|
for (unsigned i = 1; i <= 10; ++i)
|
|
{
|
|
year_month_weekday ym1 = ym - months{i};
|
|
assert(ym1.year() == year{1234});
|
|
assert(ym1.month() == month{11-i});
|
|
assert(ym1.weekday() == Tuesday);
|
|
assert(ym1.index() == 2);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|