libstdc++: Add more C++20 additions to <chrono>

[thirdparty/gcc.git] / libstdc++-v3 / testsuite / std / time / year_month_day_last / 1.cc

diff --git a/libstdc++-v3/testsuite/std/time/year_month_day_last/1.cc b/libstdc++-v3/testsuite/std/time/year_month_day_last/1.cc
new file mode 100644 (file)
index 0000000..a0cb9e7
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+++ b/libstdc++-v3/testsuite/std/time/year_month_day_last/1.cc
@@ -0,0 +1,82 @@
+// { dg-options "-std=gnu++2a" }
+// { dg-do compile { target c++2a } }
+
+// Copyright (C) 2020 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// Class template day [time.cal.year_month_day_last]
+
+#include <chrono>
+
+constexpr void
+constexpr_year_month_day_last()
+{
+  using namespace std::chrono;
+  using mdl = month_day_last;
+  using ymdl = year_month_day_last;
+
+  year_month_day_last ymdl1{year{1066}, mdl{October}};
+  ymdl1 += months{9};
+  ymdl1 -= months{9};
+  ymdl1 += years{12};
+  ymdl1 -= years{12};
+
+  constexpr ymdl ymdl2{year{1984}, mdl{August}};
+  static_assert(ymdl2.year() == year{1984});
+  static_assert(ymdl2.month() == August);
+  static_assert(ymdl2.month_day_last() == mdl{August});
+  static_assert(ymdl2.day() == day{31});
+  static_assert(sys_days(ymdl2).time_since_epoch().count() == 5356);
+  static_assert(local_days(ymdl2).time_since_epoch().count() == 5356);
+
+  static_assert( (ymdl{year{1984}, mdl{August}}.ok()));
+  static_assert(!(ymdl{year{1984}, mdl{month{13}}}.ok()));
+
+  static_assert(2015y/August/last == ymdl{year{2015}, month_day_last{month{8}}});
+  static_assert(2015y/(August/last) == ymdl{year{2015}, month_day_last{month{8}}});
+  static_assert(2015/(August/last) == ymdl{year{2015}, month_day_last{month{8}}});
+  static_assert(August/last/2015y == ymdl{year{2015}, month_day_last{month{8}}});
+  static_assert(August/last/2015 == ymdl{year{2015}, month_day_last{month{8}}});
+
+  static_assert(January/last/2000 <=> January/last/2000
+               == std::strong_ordering::equal);
+  static_assert(January/last/2000 <=> February/last/2000
+               == std::strong_ordering::less);
+  static_assert(January/last/2000 <=> January/last/1999
+               == std::strong_ordering::greater);
+
+  static_assert(January/last/2000 + months{13} == February/last/2001);
+  static_assert(January/last/2000 + months{-1} == December/last/1999);
+  static_assert(January/last/2000 - months{13} == December/last/1998);
+  static_assert(January/last/2000 - months{-13} == February/last/2001);
+
+  static_assert(January/last/2000 + years{5} == January/last/2005);
+  static_assert(January/last/2000 - years{5} == January/last/1995);
+
+  static_assert(year_month_day{January/last/2000} == January/31/2000);
+  static_assert(year_month_day{February/last/2000} == February/29/2000);
+  static_assert(year_month_day{March/last/2000} == March/31/2000);
+  static_assert(year_month_day{April/last/2000} == April/30/2000);
+  static_assert(year_month_day{May/last/2000} == May/31/2000);
+  static_assert(year_month_day{June/last/2000} == June/30/2000);
+  static_assert(year_month_day{July/last/2000} == July/31/2000);
+  static_assert(year_month_day{August/last/2000} == August/31/2000);
+  static_assert(year_month_day{September/last/2000} == September/30/2000);
+  static_assert(year_month_day{October/last/2000} == October/31/2000);
+  static_assert(year_month_day{November/last/2000} == November/30/2000);
+  static_assert(year_month_day{December/last/2000} == December/31/2000);
+}