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)
1
Part 1: Understanding State and Getting to Know React Query
5
Part 2: Managing Server State with React Query

Testing React Query Hooks and Components

You have almost mastered React Query! By now, you are well aware of how queries and mutations work and are ready to leverage React Query in a server-side, rendered project as well. Now, we’ll look at the last skill you need to be a full-on React Query hero – testing React Query using code.

This chapter will teach you how to test your useQuery and useMutation using components and hooks. But before that, you will get to know a super useful library to help you test your React Query code called Mock Service Worker.

You will then learn some restructuring tips and tricks you can leverage to make your React Query code more readable and reusable.

With this knowledge, you can start testing your code. You will start with testing your components that leverage React Query and see what testing from a user-centric approach looks like for queries and mutations.

Finally, we will dive into implementation details and see when and how...