libstdc++-v3/testsuite/20_util/pair/moveable.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2005-2019 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 pair, and also vector. If the implementation
  23 // changes this test may begin to fail.
  24
  25 #include <vector>
  26 #include <utility>
  27 #include <testsuite_hooks.h>
  28
  29 void
  30 test1()
  31 {
  32   std::pair<int,int> a(1,1),b(2,2);
  33   a=std::move(b);
  34   VERIFY(a.first == 2 && a.second == 2 && b.first == 2 && b.second == 2);
  35   std::pair<int,int> c(std::move(a));
  36   VERIFY(c.first == 2 && c.second == 2 && a.first == 2 && a.second == 2);
  37 }
  38
  39 void
  40 test2()
  41 {
  42   std::vector<int> v,w;
  43   v.push_back(1);
  44   w.push_back(2);
  45   w.push_back(2);
  46   std::pair<int, std::vector<int> > p = make_pair(1,v);
  47   std::pair<int, std::vector<int> > q = make_pair(2,w);
  48   p = std::move(q);
  49   VERIFY(p.first == 2 && q.first == 2 &&
  50          p.second.size() == 2 && q.second.size() == 0);
  51   std::pair<int, std::vector<int> > r(std::move(p));
  52   VERIFY(r.first == 2 && p.first == 2 &&
  53          r.second.size() == 2 && p.second.size() == 0);
  54 }
  55
  56 int
  57 main()
  58 {
  59   test1();
  60   test2();
  61 }