'If the Failure was created with captureVars, then C{getTracebackObject}
returns an object that looks the same to L{traceback.extract_tb}.'

def test_getTracebackObjectFromCaptureVarsAndClean(self):

    f = getDivisionFailure(captureVars=True)
    expected = traceback.extract_tb(f.getTracebackObject())
    f.cleanFailure()
    observed = traceback.extract_tb(f.getTracebackObject())
    self.assertEqual(expected, observed)
