public  void addError(Test theTest,
    Throwable theThrowable) 
{
        TestFailure failure = new TestFailure(theTest, theThrowable);
        StringBuffer xml = new StringBuffer();
        xml.append("< " + ERROR + " " + ATTR_MESSAGE + "=\""
            + xmlEncode(failure.thrownException().getMessage()) + "\" "
            + ATTR_TYPE + "=\""
            + failure.thrownException().getClass().getName() + "\" >");
        xml.append(xmlEncode(StringUtil.exceptionToString(
            failure.thrownException(), DEFAULT_STACK_FILTER_PATTERNS)));
        xml.append("< /" + ERROR + " >");
        this.currentTestFailure = xml.toString();
}

Event called by the base test runner when the test fails with an error.

 public  void addFailure(Test theTest,
    AssertionFailedError theError) 
{
        TestFailure failure = new TestFailure(theTest, theError);
        StringBuffer xml = new StringBuffer();
        xml.append("< " + FAILURE + " " + ATTR_MESSAGE + "=\""
            + xmlEncode(failure.thrownException().getMessage()) + "\" "
            + ATTR_TYPE + "=\""
            + failure.thrownException().getClass().getName() + "\" >");
        xml.append(xmlEncode(StringUtil.exceptionToString(
            failure.thrownException(), DEFAULT_STACK_FILTER_PATTERNS)));
        xml.append("< /" + FAILURE + " >");
        this.currentTestFailure = xml.toString();
}

Event called by the base test runner when the test fails with a failure.

 public  void endTest(Test theTest) 
{
        StringBuffer xml = new StringBuffer();
        String duration = getDurationAsString(System.currentTimeMillis()
            - this.currentTestStartTime);
        xml.append("< " + TESTCASE + " " + ATTR_NAME + "=\""
            + JUnitVersionHelper.getTestCaseName(theTest) + "\" "
            + ATTR_TIME + "=\"" + duration + "\" >");
        if (this.currentTestFailure != null)
        {
            xml.append(this.currentTestFailure);
        }
        xml.append("< /" + TESTCASE + " >");
        this.currentTestCaseResults.append(xml.toString());
}

Event called by the base test runner when the test ends.

 public String getEncoding() 
{
        return this.encoding;
}

 public String getSuiteClassName() 
{
        return this.suiteClassName;
}

 public String getTotalDurationAsString() 
{
        return getDurationAsString(this.totalDuration);
}

 public  void setEncoding(String theEncoding) 
{
        this.encoding = theEncoding;
}

 public  void setSuiteClassName(String theSuiteClassName) 
{
        this.suiteClassName = theSuiteClassName;
}

Sets the suite class name that was executed.

 public  void setTotalDuration(long theDuration) 
{
        this.totalDuration = theDuration;
}

Sets the duration it took to execute all the tests.

 public  void setXslFileName(String theXslFileName) 
{
                                                  
        this.xslFileName = theXslFileName;
}

Sets the XSL stylesheet file name to put in the returned XML string so that the browser will try to apply it (IE at least, I don't know about the others).

 public  void startTest(Test theTest) 
{
        this.currentTestStartTime = System.currentTimeMillis();
        this.currentTestFailure = null;
}

Event called by the base test runner when the test starts.

 public String toXML(TestResult theResult) 
{
        StringBuffer xml = new StringBuffer();
        xml.append("< ?xml version=\"1.0\" encoding=\"" + getEncoding()
            + "\"? >");
        if (this.xslFileName != null)
        {
            xml.append("< ?xml-stylesheet type=\"text/xsl\" " + "href=\""
                + this.xslFileName + "\"? >");
        }
        xml.append("< " + TESTSUITES + " >");
        xml.append("< " + TESTSUITE + " " + ATTR_NAME + "=\""
            + getSuiteClassName() + "\" " + ATTR_TESTS + "=\""
            + theResult.runCount() + "\" " + ATTR_FAILURES + "=\""
            + theResult.failureCount() + "\" " + ATTR_ERRORS + "=\""
            + theResult.errorCount() + "\" " + ATTR_TIME + "=\""
            + getTotalDurationAsString() + "\" >");
        xml.append(this.currentTestCaseResults.toString());
        xml.append("< /" + TESTSUITE + " >");
        xml.append("< /" + TESTSUITES + " >");
        return xml.toString();
}

Formats the test result as an XML string.