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

   1 // 2003-05-19  Paolo Carlini  <pcarlini@unitus.it>
   2
   3 // Copyright (C) 2003-2021 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 // { dg-require-fileio "" }
  21
  22 // 27.8.1.3 filebuf member functions
  23 // @require@ %-*.tst %-*.txt
  24 // @diff@ %-*.tst %-*.txt
  25
  26 // Test that upon filebuf::close() 27.8.1.1,3 is enforced.
  27
  28 #include <fstream>
  29 #include <testsuite_hooks.h>
  30
  31 const char name_01[] = "filebuf_virtuals-1.txt"; // file with data in it
  32 const char name_02[] = "filebuf_virtuals-2.txt"; // empty file, need to create
  33
  34 void test_04()
  35 {
  36   typedef std::filebuf::traits_type     traits_type;
  37
  38   std::filebuf fb_01, fb_02;
  39   char buffer[] = "xxxxxxxxxx";
  40
  41   // 'in'
  42   fb_01.open(name_01, std::ios_base::in);
  43   VERIFY( fb_01.sgetc() != traits_type::eof() );
  44   VERIFY( fb_01.sbumpc() != traits_type::eof() );
  45   VERIFY( fb_01.snextc() != traits_type::eof() );
  46   VERIFY( fb_01.sgetn(buffer, sizeof(buffer)) == sizeof(buffer) );
  47
  48   fb_01.close();
  49
  50   VERIFY( fb_01.sgetc() == traits_type::eof() );
  51   VERIFY( fb_01.sbumpc() == traits_type::eof() );
  52   VERIFY( fb_01.snextc() == traits_type::eof() );
  53   VERIFY( fb_01.sgetn(buffer, sizeof(buffer)) == 0 );
  54
  55   // 'out'
  56   fb_02.open(name_02, std::ios_base::out);
  57   VERIFY( fb_02.sputc('T') != traits_type::eof() );
  58   VERIFY( fb_02.sputn(buffer, sizeof(buffer)) == sizeof(buffer) );
  59
  60   fb_02.close();
  61
  62   VERIFY( fb_02.sputc('T') == traits_type::eof() );
  63   VERIFY( fb_02.sputn(buffer, sizeof(buffer)) == 0 );
  64 }
  65
  66 int
  67 main()
  68 {
  69   test_04();
  70   return 0;
  71 }