libstdc++-v3/testsuite/27_io/basic_ostream/inserters_character/char/6.cc

   1 // 1999-08-16 bkoz
   2
   3 // Copyright (C) 1999, 2000, 2002, 2003 Free Software Foundation
   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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // 27.6.2.5.4 basic_ostream character inserters
  22
  23 #include <string>
  24 #include <ostream>
  25 #include <sstream>
  26 #include <fstream>
  27 #include <testsuite_hooks.h>
  28
  29 // ostringstream and positioning, multiple writes
  30 // http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00326.html
  31 void test06()
  32 {
  33   bool test __attribute__((unused)) = true;
  34   const char carray01[] = "mos def & talib kweli are black star";
  35
  36   // normal
  37   std::ostringstream ostr1("mos def");
  38   VERIFY( ostr1.str() == "mos def" );
  39   ostr1 << " & talib kweli";  // should overwrite first part of buffer
  40   VERIFY( ostr1.str() == " & talib kweli" );
  41   ostr1 << " are black star";  // should append to string from above
  42   VERIFY( ostr1.str() != carray01 );
  43   VERIFY( ostr1.str() == " & talib kweli are black star" );
  44
  45   // appending
  46   std::ostringstream ostr2("blackalicious",
  47                            std::ios_base::out | std::ios_base::ate);
  48   VERIFY( ostr2.str() == "blackalicious" );
  49   ostr2 << " NIA ";  // should not overwrite first part of buffer
  50   VERIFY( ostr2.str() == "blackalicious NIA " );
  51   ostr2 << "4: deception (5:19)";  // should append to full string from above
  52   VERIFY( ostr2.str() == "blackalicious NIA 4: deception (5:19)" );
  53 }
  54
  55 int main()
  56 {
  57   test06();
  58   return 0;
  59 }