Getting ROI on Test Coverage in a React/Redux App
Justin Tulk

Currently using React, Redux, React Router V4, React-Router-Redux, Connected-React-R0uter, Thunk, Redux-Form, Semantic-UI React, Enzyme, Chai, Sinon, and Redux Dev Tools on a project.

I have found all five of your points to be true.

Redux Dev Tools will even print out code that tests your reducers, which is great. I think testing the behavior and side effects of actions is a good use of time if they make HTTP calls and dispatch other actions.