def test_singleAsynchronousSuccess(self):
        d = util._runSequentially([lambda: defer.succeed(None)])
        d.addCallback(self.assertEqual, [(defer.SUCCESS, None)])
        return d
When given a callable that returns a successful Deferred, include the
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/trial/test/test_util.py/TestRunSequentially.test_singleAsynchronousSuccess