libstdc++-v3/testsuite/23_containers/list/cons/moveable.h

   1 // Copyright (C) 2009-2022 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // NOTE: This makes use of the fact that we know how moveable
  19 // is implemented on list (via swap). If the implementation changed
  20 // this test may begin to fail.
  21
  22 #include <utility>
  23 #include <testsuite_hooks.h>
  24
  25 template<typename _Tp>
  26   void
  27   test_moveable()
  28   {
  29     typedef _Tp list_type;
  30
  31     list_type a,b;
  32     a.push_back(1);
  33     b = std::move(a);
  34     VERIFY( b.size() == 1 && *b.begin() == 1 && a.size() == 0 );
  35
  36     list_type c(std::move(b));
  37     VERIFY( c.size() == 1 && *c.begin() == 1 );
  38     VERIFY( b.size() == 0 );
  39   }