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// Copyright (C) 2000, 2001 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.
// 27.8.1.10 ofstream member functions
// @require@ %-*.tst
// @diff@ %-*.tst %-*.txt
#include <ostream>
#include <fstream>
#include <testsuite_hooks.h>
const char name_01[] = "ofstream_members-1.tst";
const char name_02[] = "ofstream_members-1.txt";
// http://gcc.gnu.org/ml/libstdc++/2000-06/msg00136.html
bool test00()
{
bool test = true;
std::ofstream ofs1;
ofs1.close();
// false as expected:
VERIFY( !ofs1.is_open() );
// this is now true:
VERIFY( !(ofs1) );
ofs1.open(name_02);
VERIFY( ofs1.is_open() );
// fail bit still true
VERIFY( !(ofs1) );
VERIFY( ofs1.rdstate() == std::ios_base::failbit );
ofs1.close();
#ifdef DEBUG_ASSERT
assert(test);
#endif
return test;
}
// http://gcc.gnu.org/ml/libstdc++/2000-07/msg00004.html
bool test01()
{
bool test = true;
const int more_than_max_open_files = 8200;
for(int i = 0; ++i < more_than_max_open_files;)
{
std::ofstream ifs(name_02);
VERIFY( static_cast<bool>(ifs) );
}
#ifdef DEBUG_ASSERT
assert(test);
#endif
return test;
}
void
redirect_buffer(std::ios& stream, std::streambuf* new_buf)
{ stream.rdbuf(new_buf); }
std::streambuf*
active_buffer(std::ios& stream)
{ return stream.rdbuf(); }
// libstdc++/2832
void test02()
{
bool test = true;
const char* strlit01 = "fuck war";
const char* strlit02 = "two less cars abstract riot crew, critical mass/SF";
const std::string str00;
const std::string str01(strlit01);
std::string str02;
std::filebuf fbuf;
std::streambuf* pbasebuf0 = &fbuf;
std::ofstream sstrm1;
// derived rdbuf() always returns original streambuf, even though
// it's no longer associated with the stream.
std::filebuf* const buf1 = sstrm1.rdbuf();
// base rdbuf() returns the currently associated streambuf
std::streambuf* pbasebuf1 = active_buffer(sstrm1);
redirect_buffer(sstrm1, &fbuf);
std::filebuf* const buf2 = sstrm1.rdbuf();
std::streambuf* pbasebuf2 = active_buffer(sstrm1);
VERIFY( buf1 == buf2 );
VERIFY( pbasebuf1 != pbasebuf2 );
VERIFY( pbasebuf2 == pbasebuf0 );
// How confusing and non-intuitive is this?
// These semantics are a joke, a serious defect, and incredibly lame.
}
int main()
{
test00();
test01();
test02();
return 0;
}
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