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

   1 // { dg-options "-std=gnu++0x" }
   2 // { dg-require-cstdint "" }
   3
   4 // Copyright (C) 2008-2013 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 // 20.8.4 Class template time_point [time.point]
  22
  23 #include <chrono>
  24 #include <testsuite_hooks.h>
  25
  26 // 20.8.4.3 time_point arithmetic [time.point.arithmetic]
  27 void
  28 test01()
  29 {
  30   bool test __attribute__((unused)) = true;
  31   using namespace std::chrono;
  32
  33   time_point<system_clock> t1, t2;
  34   t1 += seconds(1);
  35   VERIFY(t2.time_since_epoch() + seconds(1) == t1.time_since_epoch());
  36
  37   t1 -= std::chrono::seconds(1);
  38   VERIFY(t2.time_since_epoch() == t1.time_since_epoch());
  39 }
  40
  41 // 20.8.4.5 time_point non-member arithmetic [time.point.nonmember]
  42 void
  43 test02()
  44 {
  45   bool test __attribute__((unused)) = true;
  46   using namespace std::chrono;
  47
  48   time_point<system_clock> t1;
  49   time_point<system_clock> t2(t1 + seconds(1));
  50   VERIFY(t2.time_since_epoch() == t1.time_since_epoch() + seconds(1));
  51
  52   time_point<system_clock> t3(seconds(1) + t1);
  53   VERIFY(t3.time_since_epoch() == t1.time_since_epoch() + seconds(1));
  54
  55   time_point<system_clock> t4(seconds(1));
  56   time_point<system_clock> t5(seconds(2));
  57
  58   time_point<system_clock> t6(t5 - seconds(1));
  59   VERIFY(t6.time_since_epoch() == t4.time_since_epoch());
  60
  61   time_point<system_clock> t7(t5 - t4);
  62   VERIFY(t7.time_since_epoch() == t4.time_since_epoch());
  63 }
  64
  65 int
  66 main()
  67 {
  68   test01();
  69   test02();
  70   return 0;
  71 }