mirror of
https://github.com/HowardHinnant/date.git
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208 lines
8.2 KiB
C++
208 lines
8.2 KiB
C++
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// The MIT License (MIT)
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//
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// Copyright (c) 2015 Howard Hinnant
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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// class year_month_day
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// {
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// public:
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// constexpr year_month_day(const date::year& y, const date::month& m,
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// const date::day& d) noexcept;
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// constexpr year_month_day(const year_month_day_last& ymdl) noexcept;
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// constexpr year_month_day(const day_point& dp) noexcept;
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//
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// year_month_day& operator+=(const months& m) noexcept;
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// year_month_day& operator-=(const months& m) noexcept;
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// year_month_day& operator+=(const years& y) noexcept;
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// year_month_day& operator-=(const years& y) noexcept;
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//
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// constexpr date::year year() const noexcept;
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// constexpr date::month month() const noexcept;
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// constexpr date::day day() const noexcept;
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//
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// constexpr operator day_point() const noexcept;
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// constexpr bool ok() const noexcept;
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// };
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// constexpr bool operator==(const year_month_day& x, const year_month_day& y) noexcept;
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// constexpr bool operator!=(const year_month_day& x, const year_month_day& y) noexcept;
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// constexpr bool operator< (const year_month_day& x, const year_month_day& y) noexcept;
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// constexpr bool operator> (const year_month_day& x, const year_month_day& y) noexcept;
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// constexpr bool operator<=(const year_month_day& x, const year_month_day& y) noexcept;
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// constexpr bool operator>=(const year_month_day& x, const year_month_day& y) noexcept;
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// constexpr year_month_day operator+(const year_month_day& ymd, const months& dm) noexcept;
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// constexpr year_month_day operator+(const months& dm, const year_month_day& ymd) noexcept;
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// constexpr year_month_day operator-(const year_month_day& ymd, const months& dm) noexcept;
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// constexpr year_month_day operator+(const year_month_day& ymd, const years& dy) noexcept;
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// constexpr year_month_day operator+(const years& dy, const year_month_day& ymd) noexcept;
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// constexpr year_month_day operator-(const year_month_day& ymd, const years& dy) noexcept;
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// std::ostream& operator<<(std::ostream& os, const year_month_day& ymd);
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#include "date.h"
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#include <cassert>
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#include <sstream>
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#include <type_traits>
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static_assert( std::is_trivially_destructible<date::year_month_day>{}, "");
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static_assert(!std::is_default_constructible<date::year_month_day>{}, "");
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static_assert( std::is_trivially_copy_constructible<date::year_month_day>{}, "");
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static_assert( std::is_trivially_copy_assignable<date::year_month_day>{}, "");
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static_assert( std::is_trivially_move_constructible<date::year_month_day>{}, "");
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static_assert( std::is_trivially_move_assignable<date::year_month_day>{}, "");
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static_assert(std::is_nothrow_constructible<date::year_month_day, date::year,
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date::month,
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date::day>{}, "");
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static_assert(std::is_nothrow_constructible<date::year_month_day,
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date::year_month_day_last>{}, "");
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static_assert(std::is_convertible<date::year_month_day_last, date::year_month_day>{}, "");
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static_assert(std::is_nothrow_constructible<date::year_month_day, date::day_point>{}, "");
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static_assert(std::is_convertible<date::day_point, date::year_month_day>{}, "");
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static_assert(std::is_nothrow_constructible<date::day_point, date::year_month_day>{}, "");
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static_assert(std::is_convertible<date::year_month_day, date::day_point>{}, "");
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void
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test_arithmetic()
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{
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using namespace date;
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for (int y1 = 2010; y1 <= 2015; ++y1)
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{
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for (unsigned m1 = 1; m1 <= 12; ++m1)
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{
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year_month_day ymd1{year{y1}, month{m1}, 9_d};
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year_month_day ymd2 = ymd1 + months(24);
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assert((ymd2 == year_month_day{year{y1+2}, ymd1.month(), ymd1.day()}));
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ymd2 = ymd1 - months(24);
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assert((ymd2 == year_month_day{year{y1-2}, ymd1.month(), ymd1.day()}));
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for (int m2 = -24; m2 <= 24; ++m2)
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{
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months m{m2};
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year_month_day ymd3 = ymd1 + m;
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months dm = year_month{ymd3.year(), ymd3.month()} -
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year_month{ymd2.year(), ymd2.month()};
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assert(dm == m + years{2});
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assert(ymd3 - m == ymd1);
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assert(ymd3 + -m == ymd1);
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assert(-m + ymd3 == ymd1);
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assert((year_month_day{ymd1} += m) == ymd3);
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assert((year_month_day{ymd3} -= m) == ymd1);
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}
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for (int y2 = -2; y2 <= 5; ++y2)
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{
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years y{y2};
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year_month_day ymd3 = ymd1 + y;
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years dy = floor<years>(year_month{ymd3.year(), ymd3.month()} -
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year_month{ymd2.year(), ymd2.month()});
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assert(dy == y + years{2});
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assert(ymd3 - y == ymd1);
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assert(ymd3 + -y == ymd1);
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assert(-y + ymd3 == ymd1);
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assert((year_month_day{ymd1} += y) == ymd3);
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assert((year_month_day{ymd3} -= y) == ymd1);
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}
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}
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}
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}
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void
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test_day_point_conversion()
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{
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using namespace date;
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year y = year{-1000};
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year end = 3000_y;
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day_point prev_dp = day_point(year_month_day{y, jan, 1_d}) - days{1};
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weekday prev_wd = weekday{prev_dp};
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for (; y <= end; ++y)
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{
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month m = jan;
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do
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{
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day last_day = year_month_day_last{y, month_day_last{m}}.day();
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for (day d = 1_d; d <= last_day; ++d)
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{
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year_month_day ymd = {y, m, d};
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assert(ymd.ok());
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day_point dp = ymd;
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assert(dp == prev_dp + days{1});
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year_month_day ymd2 = dp;
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assert(ymd2 == ymd);
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weekday wd = dp;
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assert(wd.ok());
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assert(wd == prev_wd + days{1});
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prev_wd = wd;
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prev_dp = dp;
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}
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} while (++m != jan);
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}
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}
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int
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main()
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{
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using namespace date;
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constexpr year_month_day ymd1 = {2015_y, aug, 9_d};
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#if __cplusplus >= 201402
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static_assert(ymd1.ok(), "");
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#endif
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static_assert(ymd1.year() == 2015_y, "");
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static_assert(ymd1.month() == aug, "");
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static_assert(ymd1.day() == 9_d, "");
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#if __cplusplus >= 201402
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constexpr day_point dp = ymd1;
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static_assert(dp.time_since_epoch() == days{16656}, "");
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constexpr year_month_day ymd2 = dp;
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static_assert(ymd1 == ymd2, "");
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#endif
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constexpr year_month_day ymd3 = {1969_y, dec, 31_d};
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#if __cplusplus >= 201402
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static_assert(ymd3.ok(), "");
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#endif
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static_assert(ymd3.year() == 1969_y, "");
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static_assert(ymd3.month() == dec, "");
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static_assert(ymd3.day() == 31_d, "");
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#if __cplusplus >= 201402
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constexpr day_point dp3 = ymd3;
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static_assert(dp3.time_since_epoch() == days{-1}, "");
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constexpr year_month_day ymd4 = dp3;
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static_assert(ymd3 == ymd4, "");
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#endif
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static_assert(ymd1 != ymd3, "");
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static_assert(ymd1 > ymd3, "");
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static_assert(ymd3 < ymd1, "");
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static_assert(ymd1 >= ymd1, "");
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static_assert(ymd3 <= ymd1, "");
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test_arithmetic();
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test_day_point_conversion();
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std::ostringstream os;
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os << ymd1;
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assert(os.str() == "2015-08-09");
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}
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