gcc/libstdc++-v3/testsuite/27_io/filebuf_members.cc

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// Copyright (C) 2000 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 2, 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 COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// 27.8.1.3 filebuf member functions
// various tests for filebuf::open() and filebuf::close() including
// the non-portable functionality in the libstdc++-v3 IO library
#include <fstream>
#include <cassert>
#include <unistd.h>
#include <fcntl.h>
// verify that std::filebuf doesn't close files that it didn't open
// when using the following std::filebuf ctor:
//
// std::filebuf(int __fd,
// const char* __unused,
// ios_base::openmode __mode);
//
// thanks to "George T. Talbot" <george@moberg.com> for uncovering
// this bug/situation.
const char name_01[] = "testsuite/filebuf_members-1.tst";
const char name_02[] = "testsuite/filebuf_members-1.txt";
int
test_01()
{
bool test = true;
int close_num;
// read (ext)
int fd = open(name_01, O_RDONLY);
test &= fd >= 0;
{
std::filebuf fb(fd, "double_read", std::ios_base::in);
}
close_num = close(fd);
test &= close_num == 0;
// read (standard)
FILE* f = fopen(name_01, "r");
test &= f != NULL;
{
std::ifstream ifstream1(name_01);
test &= ifstream1.is_open();
std::ios_base::iostate st01 = ifstream1.rdstate();
test &= st01 == std::ios_base::goodbit;
}
close_num = fclose(f);
test &= close_num == 0;
#ifdef DEBUG_ASSERT
assert(test);
#endif
return test;
}
int
main()
{
test_01();
return 0;
}