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

   1 // { dg-options "-std=gnu++0x" }
   2 // { dg-require-cstdint "" }
   3
   4 // Copyright (C) 2008 Free Software Foundation
   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 2, 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 COPYING.  If not, write to the Free
  19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  20 // USA.
  21
  22 // 20.8.4 Class template time_point [time.point]
  23
  24 #include <chrono>
  25 #include <testsuite_hooks.h>
  26
  27 // 20.8.4.3 time_point arithmetic [time.point.arithmetic]
  28 void
  29 test01()
  30 {
  31   bool test __attribute__((unused)) = true;
  32   using namespace std::chrono;
  33
  34   time_point<system_clock> t1, t2;
  35   t1 += seconds(1);
  36   VERIFY(t2.time_since_epoch() + seconds(1) == t1.time_since_epoch());
  37
  38   t1 -= std::chrono::seconds(1);
  39   VERIFY(t2.time_since_epoch() == t1.time_since_epoch());
  40 }
  41
  42 // 20.8.4.5 time_point non-member arithmetic [time.point.nonmember]
  43 void
  44 test02()
  45 {
  46   bool test __attribute__((unused)) = true;
  47   using namespace std::chrono;
  48
  49   time_point<system_clock> t1;
  50   time_point<system_clock> t2(t1 + seconds(1));
  51   VERIFY(t2.time_since_epoch() == t1.time_since_epoch() + seconds(1));
  52
  53   time_point<system_clock> t3(seconds(1) + t1);
  54   VERIFY(t3.time_since_epoch() == t1.time_since_epoch() + seconds(1));
  55
  56   time_point<system_clock> t4(seconds(1));
  57   time_point<system_clock> t5(seconds(2));
  58
  59   time_point<system_clock> t6(t5 - seconds(1));
  60   VERIFY(t6.time_since_epoch() == t4.time_since_epoch());
  61
  62   time_point<system_clock> t7(t5 - t4);
  63   VERIFY(t7.time_since_epoch() == t4.time_since_epoch());
  64 }
  65
  66 int
  67 main()
  68 {
  69   test01();
  70   test02();
  71   return 0;
  72 }