libstdc++-v3/testsuite/23_containers/priority_queue/moveable.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2007-2024 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
  21 // NOTE: This makes use of the fact that we know how moveable
  22 // is implemented on vector (via swap). If the implementation changed
  23 // this test may begin to fail.
  24
  25 #include <queue>
  26 #include <utility>
  27 #include <testsuite_hooks.h>
  28
  29 void test01()
  30 {
  31   std::priority_queue<int> a,b;
  32   a.push(1);
  33   b = std::move(a);
  34   VERIFY( b.size() == 1 && b.top() == 1 && a.size() == 0 );
  35
  36   std::priority_queue<int> c(std::move(b));
  37   VERIFY( c.size() == 1 && c.top() == 1 );
  38   VERIFY( b.size() == 0 );
  39 }
  40
  41 int main(void)
  42 {
  43   test01();
  44   return 0;
  45 }