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

   1 // 2004-09-23 Chris Jefferson <chris@bubblescope.net>
   2
   3 // Copyright (C) 2004, 2009 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 // tr1 additions to pair
  21
  22 #include <tr1/utility>
  23 #include <testsuite_hooks.h>
  24
  25 using namespace std::tr1;
  26 using std::pair;
  27
  28 struct blank_class
  29 { };
  30
  31 int
  32 main()
  33 {
  34   bool test __attribute__((unused)) = true;
  35   typedef pair<int,int> test_pair_type;
  36   VERIFY(tuple_size<test_pair_type>::value == 2);
  37   // Test if tuple_element::type returns the correct type
  38   blank_class blank;
  39   tuple_element<0, pair<blank_class, int> >::type blank2 = blank;
  40   tuple_element<1, pair<int ,blank_class> >::type blank3 = blank;
  41   pair<int,int> test_pair(1, 2);
  42   VERIFY(get<0>(test_pair) == 1);
  43   VERIFY(get<1>(test_pair) == 2);
  44   get<0>(test_pair) = 3;
  45   get<1>(test_pair) = 4;
  46   VERIFY(get<0>(test_pair) == 3);
  47   VERIFY(get<1>(test_pair) == 4);
  48
  49   const pair<int,int> test_pair2(1,2);
  50   VERIFY(get<0>(test_pair2) == 1);
  51   VERIFY(get<1>(test_pair2) == 2);
  52 }
  53