libstdc++-v3/testsuite/tr1/6_containers/utility/pair.cc

   1 // 2004-09-23 Chris Jefferson <chris@bubblescope.net>
   2
   3 // Copyright (C) 2004 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 // tr1 additions to pair
  22
  23 #include <tr1/utility>
  24 #include <testsuite_hooks.h>
  25
  26 using namespace std::tr1;
  27 using std::pair;
  28
  29 struct blank_class
  30 { };
  31
  32 int
  33 main()
  34 {
  35   bool test __attribute__((unused)) = true;
  36   typedef pair<int,int> test_pair_type;
  37   VERIFY(tuple_size<test_pair_type>::value == 2);
  38   // Test if tuple_element::type returns the correct type
  39   blank_class blank;
  40   tuple_element<0, pair<blank_class, int> >::type blank2 = blank;
  41   tuple_element<1, pair<int ,blank_class> >::type blank3 = blank;
  42   pair<int,int> test_pair(1, 2);
  43   VERIFY(get<0>(test_pair) == 1);
  44   VERIFY(get<1>(test_pair) == 2);
  45   get<0>(test_pair) = 3;
  46   get<1>(test_pair) = 4;
  47   VERIFY(get<0>(test_pair) == 3);
  48   VERIFY(get<1>(test_pair) == 4);
  49
  50   const pair<int,int> test_pair2(1,2);
  51   VERIFY(get<0>(test_pair2) == 1);
  52   VERIFY(get<1>(test_pair2) == 2);
  53 }
  54