Test-Driving Redux

Redux is a predictable state container. To the uninitiated, these words mean very little. Thankfully, TDD can help us understand how to think about and implement our Redux application architecture. The tests in the chapter will help you see how Redux can be integrated into any application.

The headline benefit of Redux is the ability to share state between components in a way that provides data consistency when operating in an asynchronous browser environment. The big drawback is that you must introduce a whole bunch of plumbing and complexity into your application.

Here be dragons

For many applications, the complexity of Redux outweighs the benefits. Just because this chapter exists in this book does not mean you should be rushing out to use Redux. In fact, I hope that the code samples contained herein serve as warning enough for the complexity you will be introducing.

In this chapter, we’ll build a reducer and a saga to manage the submission...