Book Image

State Management with React Query

By : Daniel Afonso
Book Image

State Management with React Query

By: Daniel Afonso

Overview of this book

State management, a crucial aspect of the React ecosystem, has gained significant attention in recent times. While React offers various libraries and tools to handle state, each with different approaches and perspectives, one thing is clear: state management solutions for handling client state are not optimized for dealing with server state. React Query was created to address this issue of managing your server state, and this guide will equip you with the knowledge and skills needed to effectively use React Query for state management. Starting with a brief history of state management in the React ecosystem, you’ll find out what prompted the split from a global state to client and server state and thus understand the need for React Query. As you progress through the chapters, you'll see how React Query enables you to perform server state tasks such as fetching, caching, updating, and synchronizing your data with the server. But that’s not all; once you’ve mastered React Query, you’ll be able to apply this knowledge to handle server state with server-side rendering frameworks as well. You’ll also work with patterns to test your code by leveraging the testing library and Mock Service Worker. By the end of this book, you'll have gained a new perspective of state and be able to leverage React Query to overcome the obstacles associated with server state.
Table of Contents (14 chapters)
Part 1: Understanding State and Getting to Know React Query
Part 2: Managing Server State with React Query

Testing custom hooks that use React Query

During development, there will be times when your custom hooks are too complex to test alongside the component that leverages them. This can be due to the size of the hook, complex logic, or just too many scenarios that would increase your test complexity if you focused on a user-centric approach. To fix this issue, the React Hooks Testing Library was created.

Now, it might be very tempting to go ahead and use this everywhere, but don’t forget that a user-centric approach will ultimately help you to find issues faster and save time if you decide to refactor the way your hooks work. Either way, if your hook is not used alongside a component or is too complex, the React Hooks Testing Library is definitely something to consider.

Here is how to add the React Hooks Testing Library to your project:

  • If you are running npm in your project, run the following command:
    npm install @testing-library/react-hooks react-test-renderer -...