old-autovect-branch/libstdc++-v3/testsuite/27_io/basic_filebuf/is_open/char/1.cc

   1 // Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 2, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING.  If not, write to the Free
  16 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  17 // USA.
  18
  19 // 27.8.1.3 filebuf member functions
  20 // @require@ %-*.tst %-*.txt
  21 // @diff@ %-*.tst %-*.txt
  22
  23 // various tests for filebuf::open() and filebuf::close() including
  24 // the non-portable functionality in the libstdc++-v3 IO library
  25
  26 #include <fstream>
  27 #include <testsuite_hooks.h>
  28
  29 const char name_01[] = "filebuf_members-1.tst";
  30 const char name_02[] = "filebuf_members-1.txt";
  31
  32 // Test member functions.
  33 void test_01()
  34 {
  35   bool test __attribute__((unused)) = true;
  36   const char* name_03 = "filebuf_members-3"; // empty file, need to create
  37
  38   std::filebuf fb_01; // in
  39   std::filebuf fb_02; // out
  40   std::filebuf fb_03; // in | out
  41
  42   // bool is_open()
  43   VERIFY( !fb_01.is_open() );
  44   VERIFY( !fb_02.is_open() );
  45   VERIFY( !fb_03.is_open() );
  46
  47   // filebuf_type* open(const char* __s, ios_base::openmode __mode)
  48   fb_01.open(name_01, std::ios_base::in | std::ios_base::ate);
  49   fb_02.open(name_02, std::ios_base::in | std::ios_base::out
  50              | std::ios_base::trunc);
  51   fb_03.open(name_03, std::ios_base::out | std::ios_base::trunc);
  52   VERIFY( fb_01.is_open() );
  53   VERIFY( fb_02.is_open() );
  54   VERIFY( fb_03.is_open() );
  55
  56   // filebuf_type* close()
  57   fb_01.close();
  58   fb_02.close();
  59   fb_03.close();
  60   VERIFY( !fb_01.is_open() );
  61   VERIFY( !fb_02.is_open() );
  62   VERIFY( !fb_03.is_open() );
  63 }
  64
  65 int
  66 main()
  67 {
  68   test_01();
  69   return 0;
  70 }
  71
  72