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

   1 // Copyright (C) 2005-2020 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 // 25.2.10 rotate
  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 using __gnu_test::bidirectional_iterator_wrapper;
  27 using __gnu_test::random_access_iterator_wrapper;
  28
  29 typedef test_container<int, forward_iterator_wrapper> Fcontainer;
  30 typedef test_container<int, bidirectional_iterator_wrapper> Bcontainer;
  31 typedef test_container<int, random_access_iterator_wrapper> Rcontainer;
  32
  33
  34
  35 void
  36 test1()
  37 {
  38   int array[]={1};
  39   Fcontainer fcon(array, array);
  40   Bcontainer bcon(array, array);
  41   Rcontainer rcon(array, array);
  42   std::rotate(fcon.begin(), fcon.begin(), fcon.end());
  43   std::rotate(bcon.begin(), bcon.begin(), bcon.end());
  44   std::rotate(rcon.begin(), rcon.begin(), rcon.end());
  45 }
  46
  47 void
  48 test2()
  49 {
  50   int array[] = {1};
  51   Fcontainer fcon(array, array + 1);
  52   Bcontainer bcon(array, array + 1);
  53   Rcontainer rcon(array, array + 1);
  54   std::rotate(fcon.begin(), fcon.begin(), fcon.end());
  55   std::rotate(bcon.begin(), bcon.begin(), bcon.end());
  56   std::rotate(rcon.begin(), rcon.begin(), rcon.end());
  57   std::rotate(fcon.begin(), fcon.end(), fcon.end());
  58   std::rotate(bcon.begin(), bcon.end(), bcon.end());
  59   std::rotate(rcon.begin(), rcon.end(), rcon.end());
  60 }
  61
  62 void
  63 test3()
  64 {
  65   int array[] = {1, 2, 3, 4, 5};
  66   Fcontainer fcon(array, array + 5);
  67   Bcontainer bcon(array, array + 5);
  68   Rcontainer rcon(array, array + 5);
  69   std::rotate(fcon.begin(), fcon.it(2), fcon.end());
  70   VERIFY(array[0] == 3 && array[1] == 4 && array[2] == 5 &&
  71          array[3] == 1 && array[4] == 2);
  72   std::rotate(bcon.begin(), bcon.it(2), bcon.end());
  73   VERIFY(array[0] == 5 && array[1] == 1 && array[2] == 2 &&
  74          array[3] == 3 && array[4] == 4);
  75   std::rotate(rcon.begin(), rcon.it(2), rcon.end());
  76   VERIFY(array[0] == 2 && array[1] == 3 && array[2] == 4 &&
  77          array[3] == 5 && array[4] == 1);
  78 }
  79
  80 void
  81 test4()
  82 {
  83   int array[] = {1, 2, 3, 4};
  84   Fcontainer fcon(array, array + 4);
  85   Bcontainer bcon(array, array + 4);
  86   Rcontainer rcon(array, array + 4);
  87
  88   std::rotate(fcon.begin(), fcon.it(3), fcon.end());
  89   VERIFY(array[0] == 4 && array[1] == 1 && array[2] == 2 &&
  90          array[3] == 3);
  91
  92   std::rotate(bcon.begin(), bcon.it(3), bcon.end());
  93   VERIFY(array[0] == 3 && array[1] == 4 && array[2] == 1 &&
  94          array[3] == 2);
  95
  96   std::rotate(rcon.begin(), rcon.it(3), rcon.end());
  97   VERIFY(array[0] == 2 && array[1] == 3 && array[2] == 4 &&
  98          array[3] == 1);
  99
 100 }
 101
 102 void
 103 test5()
 104 {
 105   int array[] = {1, 2, 3, 4};
 106   Rcontainer con(array, array + 4);
 107   std::rotate(con.begin(), con.it(2), con.end());
 108   VERIFY(array[0] == 3 && array[1] == 4 && array[2] == 1 &&
 109          array[3] == 2);
 110 }
 111
 112 int
 113 main()
 114 {
 115   test1();
 116   test2();
 117   test3();
 118   test4();
 119   test5();
 120 }