read_bidir_test.hpp

C++的一个好库。。。现在很流行

// (C) Copyright Jonathan Turkanis 2004
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)

// See http://www.boost.org/libs/iostreams for documentation.

#ifndef BOOST_IOSTREAMS_TEST_READ_BIDIRECTIONAL_HPP_INCLUDED
#define BOOST_IOSTREAMS_TEST_READ_BIDIRECTIONAL_HPP_INCLUDED

#include <fstream>
#include <boost/iostreams/combine.hpp>
#include <boost/iostreams/device/file.hpp>
#include <boost/iostreams/filtering_stream.hpp>
#include <boost/test/test_tools.hpp>
#include "detail/temp_file.hpp"
#include "detail/verification.hpp"

void read_bidirectional_test()
{ 
    using namespace std;
    using namespace boost;
    using namespace boost::iostreams;
    using namespace boost::iostreams::test;

    test_file test;          

    {
        test_file src;
        temp_file dest; // Dummy.
        filtering_stream<bidirectional> first(
            combine(file_source(src.name()), file_sink(dest.name())), 0
        );
        ifstream second(test.name().c_str());
        BOOST_CHECK_MESSAGE(
            compare_streams_in_chars(first, second),
            "failed reading from filtering_stream<bidirectional>"
            "in chars with no buffer"
        );
    }

    {
        test_file src;
        temp_file dest; // Dummy.
        filtering_stream<bidirectional> first(
            combine(file_source(src.name()), file_sink(dest.name())), 0
        );
        ifstream second(test.name().c_str());
        BOOST_CHECK_MESSAGE(
            compare_streams_in_chunks(first, second),
            "failed reading from filtering_stream<bidirectional>"
            "in chunks with no buffer"
        );
    }

    {
        test_file src;
        temp_file dest; // Dummy.
        filtering_stream<bidirectional> first(
            combine(file_source(src.name()), file_sink(dest.name()))
        );
        ifstream second(test.name().c_str());
        BOOST_CHECK_MESSAGE(
            compare_streams_in_chars(first, second),
            "failed reading from filtering_stream<bidirectional>"
            "in chars with large buffer"
        );
    }

    {
        test_file src;
        temp_file dest; // Dummy.
        filtering_stream<bidirectional> first(
            combine(file_source(src.name()), file_sink(dest.name()))
        );
        ifstream second(test.name().c_str());
        BOOST_CHECK_MESSAGE(
            compare_streams_in_chunks(first, second),
            "failed reading from filtering_stream<bidirectional>"
            "in chunks with large buffer"
        );
    }
}

#endif // #ifndef BOOST_IOSTREAMS_TEST_READ_BIDIRECTIONAL_HPP_INCLUDED