Do you write tests for React/Redux?

This is a question for developers using React/Redux. Even though I guess I understand the basics of writing automated tests for React and Redux, it seems to me that writing them takes a significant amount of time and it may actually make more sense to just refresh the browser and visually inspect the result of what we're doing, because that is our end product. So I'm wondering if other developers find it worthwhile to write automated tests and what are the reasons for doing so.