'Within an exception handler, it should be possible to find the
original Failure that caused the current exception (if it was
caused by raiseException).'

def test_findFailure(self):

    f = getDivisionFailure()
    f.cleanFailure()
    try:
        f.raiseException()
    except:
        self.assertEqual(failure.Failure._findFailure(), f)
    else:
        self.fail('No    exception    raised    from    raiseException!?')
