libstdc++-v3/testsuite/27_io/basic_stringbuf/str/char/2.cc

   1 // 981208 bkoz test functionality of basic_stringbuf for char_type == char
   2
   3 // Copyright (C) 1997-2022 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 #include <sstream>
  21 #include <testsuite_hooks.h>
  22
  23 // http://gcc.gnu.org/ml/libstdc++/2003-02/msg00269.html
  24 // Growing and then seeking to ios_base::beg triggered a bug in str(),
  25 // which didn't notice the grow.
  26 void test07()
  27 {
  28   std::stringbuf strb_01;
  29   strb_01.sputc('s');
  30   strb_01.pubseekoff(0, std::ios_base::beg);
  31   std::string tmp = strb_01.str();
  32   VERIFY( tmp == "s" );
  33
  34   std::string str("strivi,");
  35   std::stringbuf strb_02(str);
  36   strb_02.pubseekoff(0, std::ios_base::end);
  37   strb_02.sputn(" no better!", 11);
  38   strb_02.pubseekoff(0, std::ios_base::beg);
  39   tmp = strb_02.str();
  40   VERIFY( tmp == "strivi, no better!" );
  41 }
  42
  43 int main()
  44 {
  45   test07();
  46   return 0;
  47 }
  48
  49
  50
  51 // more candy!!!