libstdc++-v3/testsuite/27_io/basic_filebuf/close/char/4.cc

   1 // 2003-05-19  Paolo Carlini  <pcarlini@unitus.it>
   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 // 27.8.1.3 filebuf member functions
  22 // @require@ %-*.tst %-*.txt
  23 // @diff@ %-*.tst %-*.txt
  24
  25 // Test that upon filebuf::close() 27.8.1.1,3 is enforced.
  26
  27 #include <fstream>
  28 #include <testsuite_hooks.h>
  29
  30 const char name_01[] = "filebuf_virtuals-1.txt"; // file with data in it
  31 const char name_02[] = "filebuf_virtuals-2.txt"; // empty file, need to create
  32
  33 void test_04()
  34 {
  35   typedef std::filebuf::traits_type     traits_type;
  36
  37   bool test __attribute__((unused)) = true;
  38
  39   std::filebuf fb_01, fb_02;
  40   char buffer[] = "xxxxxxxxxx";
  41
  42   // 'in'
  43   fb_01.open(name_01, std::ios_base::in);
  44   VERIFY( fb_01.sgetc() != traits_type::eof() );
  45   VERIFY( fb_01.sbumpc() != traits_type::eof() );
  46   VERIFY( fb_01.snextc() != traits_type::eof() );
  47   VERIFY( fb_01.sgetn(buffer, sizeof(buffer)) == sizeof(buffer) );
  48
  49   fb_01.close();
  50
  51   VERIFY( fb_01.sgetc() == traits_type::eof() );
  52   VERIFY( fb_01.sbumpc() == traits_type::eof() );
  53   VERIFY( fb_01.snextc() == traits_type::eof() );
  54   VERIFY( fb_01.sgetn(buffer, sizeof(buffer)) == 0 );
  55
  56   // 'out'
  57   fb_02.open(name_02, std::ios_base::out);
  58   VERIFY( fb_02.sputc('T') != traits_type::eof() );
  59   VERIFY( fb_02.sputn(buffer, sizeof(buffer)) == sizeof(buffer) );
  60
  61   fb_02.close();
  62
  63   VERIFY( fb_02.sputc('T') == traits_type::eof() );
  64   VERIFY( fb_02.sputn(buffer, sizeof(buffer)) == 0 );
  65 }
  66
  67 int
  68 main()
  69 {
  70   test_04();
  71   return 0;
  72 }