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

   1 // Copyright (C) 2005, 2009 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 // 25.3.1.4 [lib.partial.sort.copy]
  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::random_access_iterator_wrapper;
  26 using __gnu_test::input_iterator_wrapper;
  27 using std::partial_sort_copy;
  28
  29 typedef test_container<int, random_access_iterator_wrapper> Rcontainer;
  30 typedef test_container<int, input_iterator_wrapper> Icontainer;
  31
  32 void
  33 test1()
  34 {
  35   int array[]={2,1,0};
  36   Rcontainer rcon1(array, array);
  37   Rcontainer rcon2(array, array + 2);
  38   Icontainer icon1(array, array);
  39   Icontainer icon2(array, array + 2);
  40   partial_sort_copy(icon1.begin(), icon1.end(), rcon1.begin(), rcon1.end());
  41   partial_sort_copy(icon1.begin(), icon1.end(), rcon2.begin(), rcon2.end());
  42   partial_sort_copy(icon2.begin(), icon2.end(), rcon1.begin(), rcon1.end());
  43   partial_sort_copy(icon2.begin(), icon2.end(), rcon2.begin(), rcon2.end());
  44 }
  45
  46 void
  47 test2()
  48 {
  49   int array1[] = {4, 3, 2, 1, 0};
  50   int array2[5];
  51   Icontainer icon(array1, array1 + 5);
  52   Rcontainer rcon(array2, array2 + 5);
  53   partial_sort_copy(icon.begin(), icon.end(), rcon.begin(), rcon.end());
  54   VERIFY(array2[0] == 0 && array2[1] == 1 && array2[2] == 2 &&
  55          array2[3] == 3 && array2[4] == 4);
  56 }
  57
  58 void
  59 test3()
  60 {
  61   int array1[] = {4, 0, 1, 3, 2};
  62   int array2[5];
  63   Icontainer icon(array1, array1 + 5);
  64   Rcontainer rcon(array2, array2 + 2);
  65   partial_sort_copy(icon.begin(), icon.end(), rcon.begin(), rcon.end());
  66   VERIFY(array2[0] == 0 && array2[1] == 1);
  67 }
  68
  69 void
  70 test4()
  71 {
  72   int array1[] = {4, 1, 3, 2, 0};
  73   int array2[20];
  74   Icontainer icon(array1, array1 + 5);
  75   Rcontainer rcon(array2, array2 + 20);
  76   partial_sort_copy(icon.begin(), icon.end(), rcon.begin(), rcon.end());
  77   VERIFY(array2[0] == 0 && array2[1] == 1 && array2[2] == 2 &&
  78          array2[3] == 3 && array2[4] == 4);
  79 }
  80
  81 int
  82 main()
  83 {
  84   test1();
  85   test2();
  86   test3();
  87   test4();
  88 }