old-autovect-branch/libstdc++-v3/testsuite/23_containers/vector/capacity/1.cc

   1 // 1999-05-07
   2 // bkoz
   3
   4 // Copyright (C) 1999, 2002, 2003, 2004, 2005
   5 // Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 2, or (at your option)
  11 // any later version.
  12
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING.  If not, write to the Free
  20 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  21 // USA.
  22
  23 // 23.2.4.2 vector capacity
  24
  25 #include <vector>
  26 #include <stdexcept>
  27 #include <testsuite_allocator.h>
  28 #include <testsuite_hooks.h>
  29
  30 template<typename T>
  31   struct A { };
  32
  33 struct B { };
  34
  35 void test01()
  36 {
  37   // non POD types
  38   bool test __attribute__((unused)) = true;
  39   std::vector< A<B> > vec01;
  40   typedef std::vector< A<B> >::size_type size_type;
  41
  42   size_type sz01 = vec01.capacity();
  43   vec01.reserve(100);
  44   size_type sz02 = vec01.capacity();
  45   VERIFY( sz02 >= sz01 );
  46
  47   sz01 = vec01.size() + 5;
  48   vec01.resize(sz01);
  49   sz02 = vec01.size();
  50   VERIFY( sz01 == sz02 );
  51
  52   sz01 = vec01.size() - 5;
  53   vec01.resize(sz01);
  54   sz02 = vec01.size();
  55   VERIFY( sz01 == sz02 );
  56 }
  57
  58 int main()
  59 {
  60   test01();
  61   return 0;
  62 }