libstdc++-v3/testsuite/20_util/tuple/cons/constructor.cc

   1 // { dg-options "-std=gnu++0x" }
   2
   3 // Copyright (C) 2007, 2008 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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 // Tuple
  22
  23 #include <tuple>
  24 #include <testsuite_hooks.h>
  25
  26 using namespace std;
  27
  28 int
  29 main()
  30 {
  31   bool test __attribute__((unused)) = true;
  32
  33   int x1=0,x2=0;
  34   const int &z1=x1;
  35
  36   // Test empty constructor
  37   tuple<> ta __attribute__((unused));
  38   tuple<int,int> tb;
  39   // Test construction from values
  40   tuple<int,int> tc(x1,x2);
  41   tuple<int,int&> td(x1,x2);
  42   tuple<const int&> te(z1);
  43   x1=1;
  44   x2=1;
  45   VERIFY(get<0>(td) == 0 && get<1>(td) == 1 && get<0>(te) == 1);
  46
  47   // Test identical tuple copy constructor
  48   tuple<int,int> tf(tc);
  49   tuple<int,int> tg(td);
  50   tuple<const int&> th(te);
  51   // Test different tuple copy constructor
  52   tuple<int,double> ti(tc);
  53   tuple<int,double> tj(td);
  54   //tuple<int&, int&> tk(tc);
  55   tuple<const int&, const int&> tl(tc);
  56   tuple<const int&, const int&> tm(tl);
  57   // Test constructing from a pair
  58   pair<int,int> pair1(1,1);
  59   const pair<int,int> pair2(pair1);
  60   tuple<int,int> tn(pair1);
  61   tuple<int,const int&> to(pair1);
  62   tuple<int,int> tp(pair2);
  63   tuple<int,const int&> tq(pair2);
  64   return 0;
  65 }