libstdc++-v3/testsuite/20_util/time_point/2.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2008-2018 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 20.8.4 Class template time_point [time.point]
  21
  22 #include <chrono>
  23 #include <testsuite_hooks.h>
  24
  25 // 20.8.4.3 time_point arithmetic [time.point.arithmetic]
  26 void
  27 test01()
  28 {
  29   using namespace std::chrono;
  30
  31   time_point<system_clock> t1, t2;
  32   t1 += seconds(1);
  33   VERIFY(t2.time_since_epoch() + seconds(1) == t1.time_since_epoch());
  34
  35   t1 -= std::chrono::seconds(1);
  36   VERIFY(t2.time_since_epoch() == t1.time_since_epoch());
  37 }
  38
  39 // 20.8.4.5 time_point non-member arithmetic [time.point.nonmember]
  40 void
  41 test02()
  42 {
  43   using namespace std::chrono;
  44
  45   time_point<system_clock> t1;
  46   time_point<system_clock> t2(t1 + seconds(1));
  47   VERIFY(t2.time_since_epoch() == t1.time_since_epoch() + seconds(1));
  48
  49   time_point<system_clock> t3(seconds(1) + t1);
  50   VERIFY(t3.time_since_epoch() == t1.time_since_epoch() + seconds(1));
  51
  52   time_point<system_clock> t4(seconds(1));
  53   time_point<system_clock> t5(seconds(2));
  54
  55   time_point<system_clock> t6(t5 - seconds(1));
  56   VERIFY(t6.time_since_epoch() == t4.time_since_epoch());
  57
  58   time_point<system_clock> t7(t5 - t4);
  59   VERIFY(t7.time_since_epoch() == t4.time_since_epoch());
  60 }
  61
  62 int
  63 main()
  64 {
  65   test01();
  66   test02();
  67   return 0;
  68 }