def test_deferred_success_result(self):
        passthrough = self.make_wrapped_function()
        result = passthrough(succeed(123))
        self.assertEqual(result, 123)
If the underlying function returns a Deferred, the wrapper returns a
dataset/ETHPy150Open itamarst/crochet/crochet/tests/test_api.py/WaitTestsMixin.test_deferred_success_result