#include <boost/iostreams/device/file_descriptor.hpp>
#include <boost/iostreams/device/back_inserter.hpp>
#include <boost/iostreams/copy.hpp>
#include <boost/core/lightweight_test.hpp>
namespace io = boost::iostreams;
int main()
{
io::file_descriptor_source fs( "test.txt" );
std::string s;
io::copy( fs, io::back_inserter( s ) );
BOOST_TEST( s == "=== reference output ===" );
return boost::report_errors();
}