libstdc++-v3/testsuite/23_containers/list/modifiers/2.h

   1 // Copyright (C) 2001-2024 Free Software Foundation, Inc.
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   3 // This file is part of the GNU ISO C++ Library.  This library is free
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   5 // terms of the GNU General Public License as published by the
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   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
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  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 // 23.2.2.3 list modifiers [lib.list.modifiers]
  19
  20 #include <testsuite_hooks.h>
  21
  22 // general single insert/erase + swap
  23 template<typename _Tp>
  24 void
  25 modifiers2()
  26 {
  27   typedef _Tp list_type;
  28   typedef typename list_type::value_type value_type;
  29   typedef typename list_type::iterator iterator;
  30   typedef typename list_type::const_iterator const_iterator;
  31
  32   using __gnu_test::copy_constructor;
  33   using __gnu_test::destructor;
  34
  35   list_type list0201;
  36   value_type::reset();
  37
  38   list0201.insert(list0201.begin(), value_type(1));     // list should be [1]
  39   VERIFY(list0201.size() == 1);
  40   VERIFY(copy_constructor::count() == 1);
  41
  42   list0201.insert(list0201.end(), value_type(2));     // list should be [1 2]
  43   VERIFY(list0201.size() == 2);
  44   VERIFY(copy_constructor::count() == 2);
  45
  46   iterator i = list0201.begin();
  47   const_iterator j = i;
  48   VERIFY(i->id() == 1); ++i;
  49   VERIFY(i->id() == 2);
  50
  51   list0201.insert(i, value_type(3));     // list should be [1 3 2]
  52   VERIFY(list0201.size() == 3);
  53   VERIFY(copy_constructor::count() == 3);
  54
  55   const_iterator k = i;
  56   VERIFY(i->id() == 2); --i;
  57   VERIFY(i->id() == 3); --i;
  58   VERIFY(i->id() == 1);
  59   VERIFY(j->id() == 1);
  60
  61   ++i; // will point to '3'
  62   value_type::reset();
  63   list0201.erase(i); // should be [1 2]
  64   VERIFY(list0201.size() == 2);
  65   VERIFY(destructor::count() == 1);
  66   VERIFY(k->id() == 2);
  67   VERIFY(j->id() == 1);
  68
  69   list_type list0202;
  70   value_type::reset();
  71   VERIFY(list0202.size() == 0);
  72   VERIFY(copy_constructor::count() == 0);
  73   VERIFY(destructor::count() == 0);
  74
  75   // member swap
  76   list0202.swap(list0201);
  77   VERIFY(list0201.size() == 0);
  78   VERIFY(list0202.size() == 2);
  79   VERIFY(copy_constructor::count() == 0);
  80   VERIFY(destructor::count() == 0);
  81
  82   // specialized swap
  83   swap(list0201, list0202);
  84   VERIFY(list0201.size() == 2);
  85   VERIFY(list0202.size() == 0);
  86   VERIFY(copy_constructor::count() == 0);
  87   VERIFY(destructor::count() == 0);
  88 }