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

   1 // Copyright (C) 2005-2021 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 3, 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 COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // 25.2.4 remove
  19
  20 #include <algorithm>
  21 #include <testsuite_hooks.h>
  22 #include <testsuite_iterators.h>
  23
  24 using __gnu_test::test_container;
  25 using __gnu_test::forward_iterator_wrapper;
  26
  27 typedef test_container<int, forward_iterator_wrapper> Container;
  28
  29 void
  30 test1()
  31 {
  32   int array[1];
  33   Container con(array, array);
  34   VERIFY(std::remove(con.begin(), con.end(), 1).ptr == array);
  35 }
  36
  37 void
  38 test2()
  39 {
  40   int array[] = {1};
  41   Container con(array, array + 1);
  42   VERIFY(std::remove(con.begin(), con.end(), 0).ptr == array + 1);
  43   VERIFY(std::remove(con.begin(), con.end(), 1).ptr == array);
  44 }
  45
  46 void
  47 test3()
  48 {
  49   int array[] = {0, 1, 0, 1, 0, 0, 1, 1};
  50   Container con(array, array + 8);
  51   VERIFY(std::remove(con.begin(), con.end(), 1).ptr == array + 4);
  52   VERIFY(array[0] == 0 && array[1] == 0 && array[2] == 0 &&
  53          array[3] == 0);
  54 }
  55
  56 int
  57 main()
  58 {
  59   test1();
  60   test2();
  61   test3();
  62 }