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JID3 is a class library, written in Java and licensed under the LGPL, which provides the required functionality for editing ID3 tags commonly used in MP3 media files.
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/*
* ID3V1Test.java
*
* Created on 29-Dec-2003
*
* Copyright (C)2003-2005 Paul Grebenc
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id: ID3V1Test.java,v 1.7 2005/04/26 16:56:39 paul Exp $
*/
package org.blinkenlights.jid3.test;
import java.io.*;
import junit.framework.TestCase;
import org.blinkenlights.jid3.*;
import org.blinkenlights.jid3.util.*;
import org.blinkenlights.jid3.v1.*;
/**
* @author paul
*
* To change the template for this generated type comment go to
* Window>Preferences>Java>Code Generation>Code and Comments
*/
public class ID3V1Test extends TestCase
{
/**
* Constructor for ID3V1Test.
* @param arg0
*/
public ID3V1Test(String arg0)
{
super(arg0);
}
public static void main(String[] args)
{
junit.swingui.TestRunner.run(ID3V1Test.class);
}
/*
* @see TestCase#setUp()
*/
protected void setUp() throws Exception
{
super.setUp();
}
/*
* @see TestCase#tearDown()
*/
protected void tearDown() throws Exception
{
super.tearDown();
}
/** Test reading v1.0 tag from known file. */
public void testReadV1_0Tag()
{
try
{
File oSourceFile = new File(AllTests.s_RootPath + "v1_0tags.mp3");
MediaFile oMediaFile = new MP3File(oSourceFile);
ID3Tag[] aoID3Tag = oMediaFile.getTags();
System.out.println("\n*** v1_0tags.mp3 tags:");
ID3Util.printTags(aoID3Tag);
if (aoID3Tag.length != 1)
{
fail("There should be exactly one set of tags in this file.");
}
if ( ! (aoID3Tag[0] instanceof ID3V1_0Tag) )
{
fail("Expected ID3V1_0Tag.");
}
ID3V1_0Tag oID3V1_0Tag = (ID3V1_0Tag)aoID3Tag[0];
if ((!oID3V1_0Tag.getTitle().equals("Title")) ||
(!oID3V1_0Tag.getArtist().equals("Artist")) ||
(!oID3V1_0Tag.getAlbum().equals("Album")) ||
(!oID3V1_0Tag.getYear().equals("1999")) ||
(!oID3V1_0Tag.getComment().equals("Comment")) ||
(!oID3V1_0Tag.getGenre().equals(ID3V1Tag.Genre.Nullsoft_BlackMetal)))
{
fail("Unexpected tag value found.");
}
}
catch (Exception e)
{
fail(e.toString());
}
}
/** Test writing v1.0 tag to bare file, then compare against expected result. */
public void testWriteV1_0Tag()
{
try
{
// get a copy of an unmodified file to edit
copy(AllTests.s_RootPath + "notags.mp3", AllTests.s_RootPath + "id3_v1_0_testresult.mp3");
File oSourceFile = new File(AllTests.s_RootPath + "id3_v1_0_testresult.mp3");
MediaFile oMediaFile = new MP3File(oSourceFile);
// write v1.0 tag to file
ID3V1_0Tag oID3V1_0Tag = new ID3V1_0Tag();
oID3V1_0Tag.setAlbum("Album");
oID3V1_0Tag.setArtist("Artist");
oID3V1_0Tag.setComment("Comment");
oID3V1_0Tag.setGenre(ID3V1Tag.Genre.Nullsoft_BlackMetal);
oID3V1_0Tag.setTitle("Title");
oID3V1_0Tag.setYear("1999");
System.out.println(oID3V1_0Tag.toString());
oMediaFile.setID3Tag(oID3V1_0Tag);
oMediaFile.sync();
// check against expected result
compare(AllTests.s_RootPath + "v1_0tags.mp3", AllTests.s_RootPath + "id3_v1_0_testresult.mp3");
}
catch (Exception e)
{
fail(e.toString());
}
}
/** Test reading v1.1 tag from known file. */
public void testReadV1_1Tag()
{
try
{
File oSourceFile = new File(AllTests.s_RootPath + "v1_1tags.mp3");
MediaFile oMediaFile = new MP3File(oSourceFile);
ID3Tag[] aoID3Tag = oMediaFile.getTags();
System.out.println("\n*** v1_1tags.mp3 tags:");
ID3Util.printTags(aoID3Tag);
if (aoID3Tag.length != 1)
{
fail("There should be exactly one set of tags in this file.");
}
if ( ! (aoID3Tag[0] instanceof ID3V1_1Tag) )
{
fail("Expected ID3V1_1Tag.");
}
ID3V1_1Tag oID3V1_1Tag = (ID3V1_1Tag)aoID3Tag[0];
if ((!oID3V1_1Tag.getTitle().equals("Title")) ||
(!oID3V1_1Tag.getArtist().equals("Artist")) ||
(!oID3V1_1Tag.getAlbum().equals("Album")) ||
(!oID3V1_1Tag.getYear().equals("1999")) ||
(!oID3V1_1Tag.getComment().equals("Comment")) ||
(!oID3V1_1Tag.getGenre().equals(ID3V1Tag.Genre.Nullsoft_BlackMetal)) ||
(oID3V1_1Tag.getAlbumTrack() != 7) ||
(oID3V1_1Tag.getGenre().getByteValue() != 138))
{
fail("Unexpected tag value found.");
}
}
catch (Exception e)
{
fail(e.toString());
}
}
/** Test writing v1.0 tag to bare file, then compare against expected result. */
public void testWriteV1_1Tag()
{
try
{
// get a copy of an unmodified file to edit
copy(AllTests.s_RootPath + "notags.mp3", AllTests.s_RootPath + "id3_v1_1_testresult.mp3");
File oSourceFile = new File(AllTests.s_RootPath + "id3_v1_1_testresult.mp3");
MediaFile oMediaFile = new MP3File(oSourceFile);
// write v1.1 tag to file
ID3V1_1Tag oID3V1_1Tag = new ID3V1_1Tag();
oID3V1_1Tag.setAlbum("Album");
oID3V1_1Tag.setArtist("Artist");
oID3V1_1Tag.setComment("Comment");
oID3V1_1Tag.setGenre(ID3V1Tag.Genre.Nullsoft_BlackMetal);
oID3V1_1Tag.setTitle("Title");
oID3V1_1Tag.setYear("1999");
oID3V1_1Tag.setAlbumTrack(7);
System.out.println(oID3V1_1Tag.toString());
oMediaFile.setID3Tag(oID3V1_1Tag);
oMediaFile.sync();
// check against expected result
compare(AllTests.s_RootPath + "v1_1tags.mp3", AllTests.s_RootPath + "id3_v1_1_testresult.mp3");
}
catch (Exception e)
{
fail(e.toString());
}
}
/** Copy a file.
*
* @param sSource source filename
* @param sDestination destination filename
* @throws Exception
*/
private static void copy(String sSource, String sDestination)
throws Exception
{
File oInputFile = new File(sSource);
File oOutputFile = new File(sDestination);
FileInputStream oFIS = new FileInputStream(oInputFile);
FileOutputStream oFOS = new FileOutputStream(oOutputFile);
int c;
while ((c = oFIS.read()) != -1)
oFOS.write(c);
oFIS.close();
oFOS.close();
}
/** Compare two files.
*
* @param sFileOne filename
* @param sFileTwo filename
* @return true if identical, false otherwise
* @throws Exception
*/
private static void compare(String sFileOne, String sFileTwo)
throws Exception
{
File oOneFile = new File(sFileOne);
File oTwoFile = new File(sFileTwo);
// check that lengths are the same
if (oOneFile.length() != oTwoFile.length())
{
throw new Exception("File lengths differ.");
}
FileInputStream oFIS1 = new FileInputStream(oOneFile);
FileInputStream oFIS2 = new FileInputStream(oTwoFile);
int c;
// lengths are equal, so check that contents are the same
int i=0;
while ((c = oFIS1.read()) != -1)
{
if (oFIS2.read() != c)
{
throw new Exception("File contents differ at position " + i + ".");
}
i++;
}
oFIS1.close();
oFIS2.close();
}
}
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