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State Management with React Query

State Management with React Query

By : Daniel Afonso
5 (6)
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State Management with React Query

State Management with React Query

5 (6)
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)
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Part 1: Understanding State and Getting to Know React Query
5
Part 2: Managing Server State with React Query

Testing components that use React Query

When the React Testing Library was first introduced, it was under a main guiding principle that changed how we wrote tests going forward. That guiding principle is, “The more your tests resemble the way your software is used, the more confidence they can give you” (https://testing-library.com/docs/guiding-principles/).

From that point on, many things changed in our tests. Focusing on a user-centric approach meant avoiding implementation details in our tests at all costs. This meant no more shallow rendering, no more state and prop references, and a more user-centric way of querying the DOM.

Reading the last paragraph, you might be wondering how to test your components following a user-centric approach. Well, the answer is straightforward – a user doesn’t have to know the page they are using leverages React Query. If you write your tests like you are just using the page, this means that you will find issues that...

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