def METHOD_NAME(self):
    """
    _testAddOutput_
    Test the JobGroup's addOutput() method.  Verify that files are committed
    to the output fileset immediately and are available from the getOutput()
    method.
    """
    testFile = File()
    testJobGroup = JobGroup()
    assert len(testJobGroup.getOutput()) == 0, \
        "ERROR: Files in the output fileset before anything has been added."
    testJobGroup.addOutput(testFile)
    assert len(testJobGroup.getOutput()) == 1, \
        "ERROR: Unknown number of files in JobGroup output fileset."
    assert testFile in testJobGroup.getOutput(), \
        "ERROR: Unknown file in the JobGroup output fileset."
    return