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libcxx_old/test/libcxx/input.output/file.streams/fstreams/fstream.close.pass.cpp

36 lines
930 B
C++

//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <fstream>
// template <class charT, class traits = char_traits<charT> >
// class basic_fstream
// close();
// Inspired by PR#38052 - std::fstream still good after closing and updating content
#include <fstream>
#include <cassert>
#include "platform_support.h"
int main()
{
std::string temp = get_temp_file_name();
std::fstream ofs(temp, std::ios::out | std::ios::trunc);
ofs << "Hello, World!\n";
assert( ofs.good());
ofs.close();
assert( ofs.good());
ofs << "Hello, World!\n";
assert(!ofs.good());
std::remove(temp.c_str());
}