When any Exception is wrapped into an XMLStreamException, message of the original exception is not forwarded up to the stack. This results into a null message where developer doesn't have a clue about what has gone wrong.
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import javax.xml.stream.*;
import java.io.*;

import junit.framework.TestCase;
import junit.textui.TestRunner;


public class ExceptionTest extends TestCase{
    
    public ExceptionTest(String name) {
        super(name);
    }
    
    public static void main(String [] args) {
        TestRunner.run(ExceptionTest.class);
    }
    
    public void testException(){
        
        final String EXPECTED_OUTPUT = "Test XMLStreamException";
        try{
            Exception ex = new IOException("Test XMLStreamException");
            throw new XMLStreamException(ex);
        } catch(XMLStreamException e){
            assertTrue("XMLStreamException does not contain the message " +
                    "of the wrapped exception",
                    e.getMessage().contains(EXPECTED_OUTPUT));
        }
    }
}
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