src/testcases/org/apache/poi/poifs/eventfilesystem/TestPOIFSReaderRegistry.java

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   this work for additional information regarding copyright ownership.
   The ASF licenses this file to You under the Apache License, Version 2.0
   (the "License"); you may not use this file except in compliance with
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       http://www.apache.org/licenses/LICENSE-2.0

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   distributed under the License is distributed on an "AS IS" BASIS,
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   See the License for the specific language governing permissions and
   limitations under the License.
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package org.apache.poi.poifs.eventfilesystem;

import junit.framework.*;

import java.util.*;

import org.apache.poi.poifs.filesystem.POIFSDocumentPath;

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

public class TestPOIFSReaderRegistry
    extends TestCase
{
    private POIFSReaderListener[] listeners =
    {
        new Listener(), new Listener(), new Listener(), new Listener()
    };
    private POIFSDocumentPath[]   paths     =
    {
        new POIFSDocumentPath(), new POIFSDocumentPath(new String[]
        {
            "a"
        }), new POIFSDocumentPath(new String[]
        {
            "b"
        }), new POIFSDocumentPath(new String[]
        {
            "c"
        })
    };
    private String[]              names     =
    {
        "a0", "a1", "a2", "a3"
    };

    /**
     * Constructor TestPOIFSReaderRegistry
     *
     * @param name
     */

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

    /**
     * Test empty registry
     */

    public void testEmptyRegistry()
    {
        POIFSReaderRegistry registry = new POIFSReaderRegistry();

        for (int j = 0; j < paths.length; j++)
        {
            for (int k = 0; k < names.length; k++)
            {
                Iterator listeners = registry.getListeners(paths[ j ],
                                                           names[ k ]);

                assertTrue(!listeners.hasNext());
            }
        }
    }

    /**
     * Test mixed registration operations
     */

    public void testMixedRegistrationOperations()
    {
        POIFSReaderRegistry registry = new POIFSReaderRegistry();

        for (int j = 0; j < listeners.length; j++)
        {
            for (int k = 0; k < paths.length; k++)
            {
                for (int n = 0; n < names.length; n++)
                {
                    if ((j != k) && (k != n))
                    {
                        registry.registerListener(listeners[ j ], paths[ k ],
                                                  names[ n ]);
                    }
                }
            }
        }
        for (int k = 0; k < paths.length; k++)
        {
            for (int n = 0; n < names.length; n++)
            {
                Iterator listeners = registry.getListeners(paths[ k ],
                                                           names[ n ]);

                if (k == n)
                {
                    assertTrue(!listeners.hasNext());
                }
                else
                {
                    Set registeredListeners = new HashSet();

                    while (listeners.hasNext())
                    {
                        registeredListeners.add(listeners.next());
                    }
                    assertEquals(this.listeners.length - 1,
                                 registeredListeners.size());
                    for (int j = 0; j < this.listeners.length; j++)
                    {
                        if (j == k)
                        {
                            assertTrue(!registeredListeners
                                .contains(this.listeners[ j ]));
                        }
                        else
                        {
                            assertTrue(registeredListeners
                                .contains(this.listeners[ j ]));
                        }
                    }
                }
            }
        }
        for (int j = 0; j < listeners.length; j++)
        {
            registry.registerListener(listeners[ j ]);
        }
        for (int k = 0; k < paths.length; k++)
        {
            for (int n = 0; n < names.length; n++)
            {
                Iterator listeners           =
                    registry.getListeners(paths[ k ], names[ n ]);
                Set      registeredListeners = new HashSet();

                while (listeners.hasNext())
                {
                    registeredListeners.add(listeners.next());
                }
                assertEquals(this.listeners.length,
                             registeredListeners.size());
                for (int j = 0; j < this.listeners.length; j++)
                {
                    assertTrue(registeredListeners
                        .contains(this.listeners[ j ]));
                }
            }
        }
    }

    /**
     * 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.eventfilesystem.POIFSReaderRegistry");
        junit.textui.TestRunner.run(TestPOIFSReaderRegistry.class);
    }
}