def test_original_failure_no_result(self):
        dr = EventualResult(Deferred(), None)
        self.assertIdentical(dr.original_failure(), None)
If there is no result yet, original_failure() returns None.
dataset/ETHPy150Open itamarst/crochet/crochet/tests/test_api.py/EventualResultTests.test_original_failure_no_result