testdirectoryproperty.java

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/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2003 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" and
 *    "Apache POI" must not be used to endorse or promote products
 *    derived from this software without prior written permission. For
 *    written permission, please contact [e-mail].
 *
 * 5. Products derived from this software may not be called "Apache",
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 *    prior written permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package org.apache.poi.poifs.property;

import java.io.*;

import java.util.*;

import junit.framework.*;

import org.apache.poi.poifs.common.POIFSConstants;

/**
 * Class to test DirectoryProperty functionality
 *
 * @author Marc Johnson
 */

public class TestDirectoryProperty
    extends TestCase
{
    private DirectoryProperty _property;
    private byte[]            _testblock;

    /**
     * Constructor TestDirectoryProperty
     *
     * @param name
     */

    public TestDirectoryProperty(String name)
    {
        super(name);
    }

    /**
     * Test constructing DirectoryProperty
     *
     * @exception IOException
     */

    public void testConstructor()
        throws IOException
    {
        createBasicDirectoryProperty();
        verifyProperty();
    }

    /**
     * Test pre-write functionality
     *
     * @exception IOException
     */

    public void testPreWrite()
        throws IOException
    {
        createBasicDirectoryProperty();
        _property.preWrite();

        // shouldn't change anything at all
        verifyProperty();
        verifyChildren(0);

        // now try adding 1 property
        createBasicDirectoryProperty();
        _property.addChild(new LocalProperty(1));
        _property.preWrite();

        // update children index
        _testblock[ 0x4C ] = 1;
        _testblock[ 0x4D ] = 0;
        _testblock[ 0x4E ] = 0;
        _testblock[ 0x4F ] = 0;
        verifyProperty();
        verifyChildren(1);

        // now try adding 2 properties
        createBasicDirectoryProperty();
        _property.addChild(new LocalProperty(1));
        _property.addChild(new LocalProperty(2));
        _property.preWrite();

        // update children index
        _testblock[ 0x4C ] = 2;
        _testblock[ 0x4D ] = 0;
        _testblock[ 0x4E ] = 0;
        _testblock[ 0x4F ] = 0;
        verifyProperty();
        verifyChildren(2);

        // beat on the children allocation code
        for (int count = 1; count < 100; count++)
        {
            createBasicDirectoryProperty();
            for (int j = 1; j < (count + 1); j++)
            {
                _property.addChild(new LocalProperty(j));
            }
            _property.preWrite();
            verifyChildren(count);
        }
    }

    private void verifyChildren(int count)
        throws IOException
    {
        Iterator iter     = _property.getChildren();
        List     children = new ArrayList();

        while (iter.hasNext())
        {
            children.add(iter.next());
        }
        assertEquals(count, children.size());
        if (count != 0)
        {
            boolean[] found = new boolean[ count ];

            found[ _property.getChildIndex() - 1 ] = true;
            int total_found = 1;

            Arrays.fill(found, false);
            iter = children.iterator();
            while (iter.hasNext())
            {
                Property child = ( Property ) iter.next();
                Child    next  = child.getNextChild();

                if (next != null)
                {
                    int index = (( Property ) next).getIndex();

                    if (index != -1)
                    {
                        assertTrue("found index " + index + " twice",
                                   !found[ index - 1 ]);
                        found[ index - 1 ] = true;
                        total_found++;
                    }
                }
                Child previous = child.getPreviousChild();

                if (previous != null)
                {
                    int index = (( Property ) previous).getIndex();

                    if (index != -1)
                    {
                        assertTrue("found index " + index + " twice",
                                   !found[ index - 1 ]);
                        found[ index - 1 ] = true;
                        total_found++;
                    }
                }
            }
            assertEquals(count, total_found);
        }
    }

    private void createBasicDirectoryProperty()
    {
        String name = "MyDirectory";

        _property  = new DirectoryProperty(name);
        _testblock = new byte[ 128 ];
        int index = 0;

        for (; index < 0x40; index++)
        {
            _testblock[ index ] = ( byte ) 0;
        }
        int limit = Math.min(31, name.length());

        _testblock[ index++ ] = ( byte ) (2 * (limit + 1));
        _testblock[ index++ ] = ( byte ) 0;
        _testblock[ index++ ] = ( byte ) 1;
        _testblock[ index++ ] = ( byte ) 1;
        for (; index < 0x50; index++)
        {
            _testblock[ index ] = ( byte ) 0xff;
        }
        for (; index < 0x80; index++)
        {
            _testblock[ index ] = ( byte ) 0;
        }
        byte[] name_bytes = name.getBytes();

        for (index = 0; index < limit; index++)
        {
            _testblock[ index * 2 ] = name_bytes[ index ];
        }
    }

    private void verifyProperty()
        throws IOException
    {
        ByteArrayOutputStream stream = new ByteArrayOutputStream(512);

        _property.writeData(stream);
        byte[] output = stream.toByteArray();

        assertEquals(_testblock.length, output.length);
        for (int j = 0; j < _testblock.length; j++)
        {
            assertEquals("mismatch at offset " + j, _testblock[ j ],
                         output[ j ]);
        }
    }

    /**
     * Test addChild
     *
     * @exception IOException
     */

    public void testAddChild()
        throws IOException
    {
        createBasicDirectoryProperty();
        _property.addChild(new LocalProperty(1));
        _property.addChild(new LocalProperty(2));
        try
        {
            _property.addChild(new LocalProperty(1));
            fail("should have caught IOException");
        }
        catch (IOException ignored)
        {

            // as expected
        }
        try
        {
            _property.addChild(new LocalProperty(2));
            fail("should have caught IOException");
        }
        catch (IOException ignored)
        {

            // as expected
        }
        _property.addChild(new LocalProperty(3));
    }

    /**
     * Test deleteChild
     *
     * @exception IOException
     */

    public void testDeleteChild()
        throws IOException
    {
        createBasicDirectoryProperty();
        Property p1 = new LocalProperty(1);

        _property.addChild(p1);
        try
        {
            _property.addChild(new LocalProperty(1));
            fail("should have caught IOException");
        }
        catch (IOException ignored)
        {

            // as expected
        }
        assertTrue(_property.deleteChild(p1));
        assertTrue(!_property.deleteChild(p1));
        _property.addChild(new LocalProperty(1));
    }

    /**
     * Test changeName
     *
     * @exception IOException
     */

    public void testChangeName()
        throws IOException
    {
        createBasicDirectoryProperty();
        Property p1           = new LocalProperty(1);
        String   originalName = p1.getName();

        _property.addChild(p1);
        assertTrue(_property.changeName(p1, "foobar"));
        assertEquals("foobar", p1.getName());
        assertTrue(!_property.changeName(p1, "foobar"));
        assertEquals("foobar", p1.getName());
        Property p2 = new LocalProperty(1);

        _property.addChild(p2);
        assertTrue(!_property.changeName(p1, originalName));
        assertTrue(_property.changeName(p2, "foo"));
        assertTrue(_property.changeName(p1, originalName));
    }

    /**
     * Test reading constructor
     *
     * @exception IOException
     */

    public void testReadingConstructor()
        throws IOException
    {
        byte[] input =
        {
            ( byte ) 0x42, ( byte ) 0x00, ( byte ) 0x6F, ( byte ) 0x00,
            ( byte ) 0x6F, ( byte ) 0x00, ( byte ) 0x74, ( byte ) 0x00,
            ( byte ) 0x20, ( byte ) 0x00, ( byte ) 0x45, ( byte ) 0x00,
            ( byte ) 0x6E, ( byte ) 0x00, ( byte ) 0x74, ( byte ) 0x00,
            ( byte ) 0x72, ( byte ) 0x00, ( byte ) 0x79, ( byte ) 0x00,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0x16, ( byte ) 0x00, ( byte ) 0x01, ( byte ) 0x01,
            ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF,
            ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF,
            ( byte ) 0x02, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0x20, ( byte ) 0x08, ( byte ) 0x02, ( byte ) 0x00,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0xC0, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x46,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0xC0, ( byte ) 0x5C, ( byte ) 0xE8, ( byte ) 0x23,
            ( byte ) 0x9E, ( byte ) 0x6B, ( byte ) 0xC1, ( byte ) 0x01,
            ( byte ) 0xFE, ( byte ) 0xFF, ( byte ) 0xFF, ( byte ) 0xFF,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00,
            ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00, ( byte ) 0x00
        };

        verifyReadingProperty(0, input, 0, "Boot Entry");
    }

    private void verifyReadingProperty(int index, byte [] input, int offset,
                                       String name)
        throws IOException
    {
        DirectoryProperty     property = new DirectoryProperty(index, input,
                                             offset);
        ByteArrayOutputStream stream   = new ByteArrayOutputStream(128);
        byte[]                expected = new byte[ 128 ];

        System.arraycopy(input, offset, expected, 0, 128);
        property.writeData(stream);
        byte[] output = stream.toByteArray();

        assertEquals(128, output.length);
        for (int j = 0; j < 128; j++)
        {
            assertEquals("mismatch at offset " + j, expected[ j ],
                         output[ j ]);
        }
        assertEquals(index, property.getIndex());
        assertEquals(name, property.getName());
        assertTrue(!property.getChildren().hasNext());
    }

    /**
     * main method to run the unit tests
     *
     * @param ignored_args
     */

    public static void main(String [] ignored_args)
    {
        System.out.println(
            "Testing org.apache.poi.poifs.property.DirectoryProperty");
        junit.textui.TestRunner.run(TestDirectoryProperty.class);
    }
}