libstdc++-v3/testsuite/27_io/basic_filebuf/sbumpc/char/1-out.cc

   1 // 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001, 2002, 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 <testsuite_hooks.h>
  25 #include <testsuite_io.h>
  26
  27 // @require@ %-*.tst %-*.txt
  28 // @diff@ %-*.tst %*.txt
  29
  30 const char name_02[] = "tmp_sbumpc_1out.tst"; // empty file, need to create
  31
  32 void test05()
  33 {
  34   using namespace std;
  35   using namespace __gnu_cxx_test;
  36   typedef filebuf::int_type     int_type;
  37   typedef filebuf::traits_type  traits_type;
  38
  39   bool                                  test = true;
  40
  41   // int_type sbumpc()
  42   // if read_cur not avail returns uflow(), else return *read_cur & increment
  43
  44   // out
  45   {
  46     constraint_filebuf fb_02;
  47     fb_02.open(name_02, ios_base::out | ios_base::trunc);
  48     VERIFY( fb_02.write_position() );
  49     VERIFY( !fb_02.read_position() );
  50     int_type c2 = fb_02.sbumpc();
  51     VERIFY( c2 == traits_type::eof() );
  52     int_type c4 = fb_02.sbumpc();
  53     VERIFY( c4 == traits_type::eof() );
  54     VERIFY( fb_02.write_position() );
  55     VERIFY( !fb_02.read_position() );
  56   }
  57 }
  58
  59 main()
  60 {
  61   test05();
  62   return 0;
  63 }