libstdc++-v3/testsuite/25_algorithms/remove_if/1.cc

   1 // Copyright (C) 2005 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 2, 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 COPYING.  If not, write to the Free
  16 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  17 // USA.
  18
  19 // 25.2.4 remove
  20
  21 #include <algorithm>
  22 #include <testsuite_hooks.h>
  23 #include <testsuite_iterators.h>
  24
  25 using __gnu_test::test_container;
  26 using __gnu_test::forward_iterator_wrapper;
  27
  28 typedef test_container<int, forward_iterator_wrapper> Container;
  29
  30 bool equal1(int val) { return val == 1; }
  31 bool equal0(int val) { return val == 0; }
  32
  33 void
  34 test1()
  35 {
  36   int array[1];
  37   Container con(array, array);
  38   VERIFY(std::remove_if(con.begin(), con.end(), equal1).ptr == array);
  39 }
  40
  41 void
  42 test2()
  43 {
  44   int array[] = {1};
  45   Container con(array, array + 1);
  46   VERIFY(std::remove_if(con.begin(), con.end(), equal0).ptr == array + 1);
  47   VERIFY(std::remove_if(con.begin(), con.end(), equal1).ptr == array);
  48 }
  49
  50 void
  51 test3()
  52 {
  53   int array[] = {0, 1, 0, 1, 0, 0, 1, 1};
  54   Container con(array, array + 8);
  55   VERIFY(std::remove_if(con.begin(), con.end(), equal1).ptr == array + 4);
  56   VERIFY(array[0] == 0 && array[1] == 0 && array[2] == 0 &&
  57          array[3] == 0);
  58 }
  59
  60 int
  61 main()
  62 {
  63   test1();
  64   test2();
  65   test3();
  66 }