libstdc++-v3/testsuite/27_io/basic_ios/clear/char/1.cc

// 1999-09-20 bkoz

// Copyright (C) 1999-2023 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.


// 27.4.4.2 basic_ios member functions

// NB: Don't include any other headers in this file.
#include <ios>
#include <testsuite_hooks.h>

// 27.4.4.3 basic_ios iostate flags function
void test01()
{
  typedef std::ios_base::fmtflags fmtflags;
  typedef std::ios_base::iostate iostate;
  using std::ios_base;

  iostate iostate02, iostate03;
  const iostate iostate01 = std::ios_base::badbit | std::ios_base::eofbit;
  std::ios ios_01(0);

  // bool fail() const
  VERIFY( ios_01.fail() );

  // bool operator!() const
  VERIFY( !ios_01 );
  
  // iostate rdstate() const
  iostate03 = ios_01.rdstate();
  VERIFY( static_cast<bool>(iostate03 & std::ios_base::badbit) );

  // void clear(iostate state = goodbit)
  try {
    ios_01.clear(std::ios_base::eofbit);
    iostate02 = ios_01.rdstate();
    VERIFY( static_cast<bool>(iostate02 & iostate01) );
  }		 
  catch(std::ios_base::failure& fail) {
    VERIFY( false );
  }
  catch(...) {
    VERIFY( false );
  }
}

int main() 
{
  test01();
  return 0;
}