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// Copyright (C) 2001, 2002, 2003, 2009 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/>.

// 27.8.1.3 filebuf member functions

// @require@ %-*.tst %-*.txt

// @diff@ %-*.tst %-*.txt

// various tests for filebuf::open() and filebuf::close() including

// the non-portable functionality in the libstdc++-v3 IO library

// { dg-require-fileio "" }

#include <fstream>

#include <testsuite_hooks.h>

const char name_01[] = "filebuf_members-1.tst";

const char name_02[] = "filebuf_members-1.txt";

// Test member functions.

void test_01()

{

  bool test __attribute__((unused)) = true;

  const char* name_03 = "filebuf_members-3"; // empty file, need to create

  std::filebuf fb_01; // in 

  std::filebuf fb_02; // out

  std::filebuf fb_03; // in | out

  // bool is_open()

  VERIFY( !fb_01.is_open() );

  VERIFY( !fb_02.is_open() );

  VERIFY( !fb_03.is_open() );

  // filebuf_type* open(const char* __s, ios_base::openmode __mode)

  fb_01.open(name_01, std::ios_base::in | std::ios_base::ate);

  VERIFY( fb_01.is_open() );

  // Try to open two different files without closing the first:

  // Should keep the old file attached, and disregard attempt to overthrow.

  fb_02.open(name_02, std::ios_base::in | std::ios_base::out

             | std::ios_base::trunc);

  VERIFY( fb_02.is_open() );

  fb_03.open(name_03, std::ios_base::out | std::ios_base::trunc);

  VERIFY( fb_03.is_open() );

  // filebuf_type* close()

  std::filebuf* f;

  f = fb_01.close();

  VERIFY( f != NULL );

  VERIFY( !fb_01.is_open() );

  f = fb_02.close();

  VERIFY( f != NULL );

  VERIFY( !fb_02.is_open() );

  f = fb_03.close();

  VERIFY( f != NULL );

  VERIFY( !fb_03.is_open() );

  f = fb_03.close();

  VERIFY( f == NULL );

  VERIFY( !fb_03.is_open() );

}

int

main()

{

  test_01();

  return 0;

}