libstdc++-v3/testsuite/20_util/time_point/1.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2008-2020 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 // 20.8.4.1 time_point constructors [time.point.cons]
  26 void
  27 test01()
  28 {
  29   using namespace std::chrono;
  30
  31   time_point<system_clock> t1;
  32   VERIFY(t1.time_since_epoch() == system_clock::duration::zero());
  33
  34   time_point<steady_clock> t2;
  35   VERIFY(t2.time_since_epoch() == steady_clock::duration::zero());
  36
  37   time_point<high_resolution_clock> t3;
  38   VERIFY(t3.time_since_epoch() == high_resolution_clock::duration::zero());
  39 }
  40
  41 int
  42 main()
  43 {
  44   test01();
  45   return 0;
  46 }