close_test.cpp

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/*
 * 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.
 *
 * Verifies that the close() member functions of filters and devices
 * are called with the correct arguments in the correct order when 
 * used with chains and streams.
 *
 * File:        libs/iostreams/test/close_test.cpp
 * Date:        Sun Dec 09 16:12:23 MST 2007
 * Copyright:   2007 CodeRage
 * Author:      Jonathan Turkanis
 */

#include <boost/iostreams/chain.hpp>
#include <boost/iostreams/filtering_streambuf.hpp>
#include <boost/iostreams/stream.hpp>
#include <boost/test/test_tools.hpp>
#include <boost/test/unit_test.hpp>  
#include "detail/closable.hpp"
#include "detail/operation_sequence.hpp"

using namespace std;
using namespace boost;
using namespace boost::iostreams;
using namespace boost::iostreams::test;
using boost::unit_test::test_suite;
namespace io = boost::iostreams;

void input_chain_test()
{
    // Test input filter and device
    {
        operation_sequence          seq;
        filtering_streambuf<input>  ch;

        // Test chain::pop()
        ch.push(closable_filter<input>(seq.new_operation(2)));
        ch.push(closable_device<input>(seq.new_operation(1)));
        BOOST_CHECK_NO_THROW(ch.pop());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);

        // Test filter reuse and io::close()
        seq.reset();
        ch.push(closable_device<input>(seq.new_operation(1)));
        BOOST_CHECK_NO_THROW(io::close(ch));
        BOOST_CHECK_OPERATION_SEQUENCE(seq);

        // Test filter reuse and chain::reset()
        seq.reset();
        ch.push(closable_device<input>(seq.new_operation(1)));
        BOOST_CHECK_NO_THROW(ch.reset());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);
    }

    // Test bidirectional filter and device
    {
        operation_sequence          seq;
        filtering_streambuf<input>  ch;

        // Test chain::pop()
        ch.push(
            closable_filter<bidirectional>(
                seq.new_operation(2),
                seq.new_operation(3)
            )
        );
        ch.push(
            closable_device<bidirectional>(
                seq.new_operation(1),
                seq.new_operation(4)
            )
        );
        BOOST_CHECK_NO_THROW(ch.pop());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);

        // Test filter reuse and io::close()
        seq.reset();
        ch.push(
            closable_device<bidirectional>(
                seq.new_operation(1),
                seq.new_operation(4)
            )
        );
        BOOST_CHECK_NO_THROW(io::close(ch));
        BOOST_CHECK_OPERATION_SEQUENCE(seq);

        // Test filter reuse and chain::reset()
        seq.reset();
        ch.push(
            closable_device<bidirectional>(
                seq.new_operation(1),
                seq.new_operation(4)
            )
        );
        BOOST_CHECK_NO_THROW(ch.reset());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);
    }

    // Test seekable filter and device
    {
        operation_sequence          seq;
        filtering_streambuf<input>  ch;

        // Test chain::pop()
        ch.push(closable_filter<seekable>(seq.new_operation(1)));
        ch.push(closable_device<seekable>(seq.new_operation(2)));
        BOOST_CHECK_NO_THROW(ch.pop());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);

        // Test filter reuse and io::close()
        seq.reset();
        ch.push(closable_device<seekable>(seq.new_operation(2)));
        BOOST_CHECK_NO_THROW(io::close(ch));
        BOOST_CHECK_OPERATION_SEQUENCE(seq);

        // Test filter reuse and chain::reset()
        seq.reset();
        ch.push(closable_device<seekable>(seq.new_operation(2)));
        BOOST_CHECK_NO_THROW(ch.reset());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);
    }

    // Test dual-user filter
    {
        operation_sequence          seq;
        filtering_streambuf<input>  ch;
        operation                   dummy;

        // Test chain::pop()
        ch.push(
            closable_filter<dual_use>(
                seq.new_operation(2), 
                dummy
            )
        );
        ch.push(closable_device<input>(seq.new_operation(1)));
        BOOST_CHECK_NO_THROW(ch.pop());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);
        
        // Test filter reuse and io::close()
        seq.reset();
        ch.push(closable_device<input>(seq.new_operation(1)));
        BOOST_CHECK_NO_THROW(io::close(ch));
        BOOST_CHECK_OPERATION_SEQUENCE(seq);

        // Test filter reuse and chain::reset()
        seq.reset();
        ch.push(closable_device<input>(seq.new_operation(1)));
        BOOST_CHECK_NO_THROW(ch.reset());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);
    }

    // Test direct source
    {
        operation_sequence          seq;
        filtering_streambuf<input>  ch;

        // Test chain::pop()
        ch.push(closable_filter<input>(seq.new_operation(2)));
        ch.push(closable_device<direct_input>(seq.new_operation(1)));
        BOOST_CHECK_NO_THROW(ch.pop());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);
        
        // Test filter reuse and io::close()
        seq.reset();
        ch.push(closable_device<direct_input>(seq.new_operation(1)));
        BOOST_CHECK_NO_THROW(io::close(ch));
        BOOST_CHECK_OPERATION_SEQUENCE(seq);

        // Test filter reuse and chain::reset()
        seq.reset();
        ch.push(closable_device<direct_input>(seq.new_operation(1)));
        BOOST_CHECK_NO_THROW(ch.reset());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);
    }

    // Test direct bidirectional device
    {
        operation_sequence          seq;
        filtering_streambuf<input>  ch;

        // Test chain::pop()
        ch.push(closable_filter<input>(seq.new_operation(2)));
        ch.push(
            closable_device<direct_bidirectional>(
                seq.new_operation(1),
                seq.new_operation(3)
            )
        );
        BOOST_CHECK_NO_THROW(ch.pop());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);

        // Test filter reuse and io::close()
        seq.reset();
        ch.push(
            closable_device<direct_bidirectional>(
                seq.new_operation(1),
                seq.new_operation(3)
            )
        );
        BOOST_CHECK_NO_THROW(io::close(ch));
        BOOST_CHECK_OPERATION_SEQUENCE(seq);

        // Test filter reuse and chain::reset()
        seq.reset();
        ch.push(
            closable_device<direct_bidirectional>(
                seq.new_operation(1),
                seq.new_operation(3)
            )
        );
        BOOST_CHECK_NO_THROW(ch.reset());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);
    }

    // Test direct seekable device
    {
        operation_sequence          seq;
        filtering_streambuf<input>  ch;

        // Test chain::pop()
        ch.push(closable_filter<input>(seq.new_operation(1)));
        ch.push(closable_device<direct_seekable>(seq.new_operation(2)));
        BOOST_CHECK_NO_THROW(ch.pop());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);

        // Test filter reuse and io::close()
        seq.reset();
        ch.push(closable_device<direct_seekable>(seq.new_operation(2)));
        BOOST_CHECK_NO_THROW(io::close(ch));
        BOOST_CHECK_OPERATION_SEQUENCE(seq);

        // Test filter reuse and chain::reset()
        seq.reset();
        ch.push(closable_device<direct_seekable>(seq.new_operation(2)));
        BOOST_CHECK_NO_THROW(ch.reset());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);
    }
}

void output_chain_test()
{
    // Test output filter and device
    {
        operation_sequence           seq;
        filtering_streambuf<output>  ch;

        // Test chain::pop()
        ch.push(closable_filter<output>(seq.new_operation(1)));
        ch.push(closable_device<output>(seq.new_operation(2)));
        BOOST_CHECK_NO_THROW(ch.pop());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);

        // Test filter reuse and io::close()
        seq.reset();
        ch.push(closable_device<output>(seq.new_operation(2)));
        BOOST_CHECK_NO_THROW(io::close(ch));
        BOOST_CHECK_OPERATION_SEQUENCE(seq);

        // Test filter reuse and chain::reset()
        seq.reset();
        ch.push(closable_device<output>(seq.new_operation(2)));
        BOOST_CHECK_NO_THROW(ch.reset());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);
    }

    // Test bidirectional filter and device
    {
        operation_sequence           seq;
        filtering_streambuf<output>  ch;
        
        // Test chain::pop()
        ch.push(
            closable_filter<bidirectional>(
                seq.new_operation(2),
                seq.new_operation(3)
            )
        );
        ch.push(
            closable_device<bidirectional>(
                seq.new_operation(1),
                seq.new_operation(4)
            )
        );
        BOOST_CHECK_NO_THROW(ch.pop());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);

        // Test filter reuse and io::close()
        seq.reset();
        ch.push(
            closable_device<bidirectional>(
                seq.new_operation(1),
                seq.new_operation(4)
            )
        );
        BOOST_CHECK_NO_THROW(io::close(ch));
        BOOST_CHECK_OPERATION_SEQUENCE(seq);

        // Test filter reuse and chain::reset()
        seq.reset();
        ch.push(
            closable_device<bidirectional>(
                seq.new_operation(1),
                seq.new_operation(4)
            )
        );
        BOOST_CHECK_NO_THROW(ch.reset());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);
    }

    // Test seekable filter and device
    {
        operation_sequence           seq;
        filtering_streambuf<output>  ch;

        // Test chain::pop()
        ch.push(closable_filter<seekable>(seq.new_operation(1)));
        ch.push(closable_device<seekable>(seq.new_operation(2)));
        BOOST_CHECK_NO_THROW(ch.pop());
        BOOST_CHECK_OPERATION_SEQUENCE(seq);

        // Test filter reuse and io::close()
        seq.reset();