libstdc++-v3/testsuite/27_io/basic_stringstream/str/char/3.cc

   1 // 2001-05-24 Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001-2013 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 27.7.6 member functions (stringstream_members)
  21
  22 #include <sstream>
  23 #include <testsuite_hooks.h>
  24
  25 void
  26 test03()
  27 {
  28   bool test __attribute__((unused)) = true;
  29
  30   //
  31   // 1: Automatic formatting of a compound string
  32   //
  33   int i = 1024;
  34   int *pi = &i;
  35   double d = 3.14159;
  36   double *pd = &d;
  37   std::string blank;
  38   std::ostringstream ostrst01;
  39   std::ostringstream ostrst02(blank);
  40
  41   // No buffer, so should be created.
  42   ostrst01 << "i: " << i << " i's address:  " << pi << '\n'
  43              << "d: " << d << " d's address: " << pd << std::endl;
  44   // Buffer, so existing buffer should be overwritten.
  45   ostrst02 << "i: " << i << " i's address:  " << pi << '\n'
  46              << "d: " << d << " d's address: " << pd << std::endl;
  47
  48   std::string msg01 = ostrst01.str();
  49   std::string msg02 = ostrst02.str();
  50   VERIFY( msg01 == msg02 );
  51   VERIFY( msg02 != blank );
  52 }
  53
  54 int main()
  55 {
  56   test03();
  57   return 0;
  58 }