libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/10096.cc

   1 // 2003-05-03  Petur Runolfsson  <peturr02@ru.is>
   2
   3 // Copyright (C) 2003 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 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 // 27.8.1.4 Overridden virtual functions
  22
  23 #include <fstream>
  24 #include <string>
  25 #include <testsuite_hooks.h>
  26
  27 class MyTraits : public std::char_traits<char>
  28 {
  29 };
  30
  31 // libstdc++/10096
  32 void test01()
  33 {
  34   using namespace std;
  35
  36   const char* name = "filebuf_virtuals-1.txt";
  37
  38   string str;
  39   filebuf fb1;
  40   fb1.open(name, ios_base::in);
  41
  42   filebuf::int_type c1;
  43   while ((c1 = fb1.sbumpc()) != filebuf::traits_type::eof())
  44     str.push_back(filebuf::traits_type::to_char_type(c1));
  45   fb1.close();
  46
  47   basic_filebuf<char, MyTraits> fb;
  48   VERIFY( fb.sgetc() == MyTraits::eof() );
  49
  50   fb.open(name, ios_base::in);
  51   VERIFY( fb.is_open() );
  52
  53   for (string::iterator i = str.begin(); i != str.end(); ++i)
  54     {
  55       MyTraits::int_type c2 = fb.sbumpc();
  56       VERIFY( c2 != MyTraits::eof() );
  57       VERIFY( c2 == MyTraits::to_int_type(*i) );
  58     }
  59
  60   VERIFY( fb.sgetc() == MyTraits::eof() );
  61   fb.close();
  62   VERIFY( !fb.is_open() );
  63   VERIFY( fb.sgetc() == MyTraits::eof() );
  64 }
  65
  66 int main()
  67 {
  68   test01();
  69   return 0;
  70 }