libstdc++-v3/testsuite/27_io/basic_ostream/flush/char/2.cc

   1 // 2003-09-22  Petur Runolfsson  <peturr02@ru.is>
   2
   3 // Copyright (C) 2003, 2005 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 // 27.6.2.6 Unformatted output functions
  22 //
  23 // _GLIBCXX_RESOLVE_LIB_DEFECTS
  24 // DR 60. What is a formatted input function?
  25 // basic_ostream::flush() does not behave as an unformatted output function.
  26
  27 #include <ostream>
  28 #include <testsuite_hooks.h>
  29 #include <testsuite_io.h>
  30
  31 void test02()
  32 {
  33   bool test __attribute__((unused)) = true;
  34
  35   __gnu_test::sync_streambuf buf;
  36   std::ostream os(&buf);
  37
  38   __gnu_test::sync_streambuf buf_tie;
  39   std::ostream os_tie(&buf_tie);
  40
  41   // No sentry should be constructed so os.tie()->flush() should not be
  42   // called.
  43   os.tie(&os_tie);
  44
  45   os.flush();
  46
  47   VERIFY( os.good() );
  48   VERIFY( buf.sync_called() );
  49   VERIFY( !buf_tie.sync_called() );
  50
  51   // os.rdbuf()->pubsync() should be called even if !os.good().
  52   os.setstate(std::ios_base::eofbit);
  53
  54   os.flush();
  55
  56   VERIFY( os.rdstate() == std::ios_base::eofbit );
  57   VERIFY( buf.sync_called() );
  58   VERIFY( !buf_tie.sync_called() );
  59 }
  60
  61 int main()
  62 {
  63   test02();
  64   return 0;
  65 }
  66