I have used this approach and now I perceive mocks as a bad code smell. It's worth noting that long and complicated flows need to be wrapped in sagas (which are

I have used this approach and now I perceive mocks as a bad code smell. It's worth noting that long and complicated flows need to be wrapped in sagas (which are just imperative shells) and things can get not so easy. I would love to hear what are other clean alternatives in such cases. Still, "functional core, imperative shell" is the way to go, code really fits in the head and tests actually make sense.