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Key benefits

Get to grips with React Testing Library and create tests that don't break with changes in implementation

Learn how to put RTL into practice by implementing it in real-world scenarios

Test apps to be more accessible and ensure your tests will work with actual DOM nodes

Description

React Testing Library (RTL) is a lightweight and easy-to-use tool for testing the document object model (DOM) output of components. This book will show you how to use this modern, user-friendly tool to test React components, reducing the risk that your application will not work as expected in production. The book demonstrates code snippets that will allow you to implement RTL easily, helping you to understand the guiding principles of the DOM Testing Library to write tests from the perspective of the user. You'll explore the advantages of testing components from the perspective of individuals who will actually use your components, and use test-driven development (TDD) to drive the process of writing tests. As you advance, you'll discover how to add RTL to React projects, test components using the Context API, and also learn how to write user interface (UI) end-to-end tests using the popular Cypress library. Throughout this book, you’ll work with practical examples and useful explanations to be able to confidently create tests that don't break when changes are made. By the end of this React book, you will have learned all you need to be able to test React components confidently.

What you will learn

Explore React Testing Library and its use cases

Get to grips with the RTL ecosystem

Apply jest-dom to enhance your tests using RTL

Gain the confidence you need to create tests that don t break with changes using RTL

Integrate Cucumber and Cypress into your test suite

Use TDD to drive the process of writing tests

Apply your existing React knowledge for using RTL

What do you get with a Packt Subscription?

Free for first 7 days. $19.99 p/m after that. Cancel any time!

Unlimited ad-free access to the largest independent learning library in tech. Access this title and thousands more!

50+ new titles added per month, including many first-to-market concepts and exclusive early access to books as they are being written.

Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.

Thousands of reference materials covering every tech concept you need to stay up to date.

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View plans & pricing

Frequently bought together

React 17 Design Patterns and Best Practices

$57.99

Simplify Testing with React Testing Library

$40.99

$50.99

Total $ 149.97

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Amazon verified reviews

Chaim Krause Jun 10, 2021

I have participated in all aspects of software development for decades. I was already aware of the benefits of following best practices like test-driven development. Along with that goes an appreciation for behavior-driven development. Those are essential best practices if you want to make sure that you provide the end-user with the software they wanted instead of delivering something that matches every specification in the requirements document but doesn't help the user get their task done more efficiently.And those ideas provide a solid foundation upon which to produce quality software. But we all know that the Devil is in the details. Or, to put it in software development terms, we have been provided a good interface, but now we are tasked with producing an exemplary implementation.My point is that you, like me a week ago, may have a solid grasp of the concepts of testing your software projects during development, but you may have never done it explicitly using React. And like me, you may be looking for a book to give you the specifics, vice the generic concepts, of using the React Testing Library in the particular project you happen to be involved with presently.Scottie Crump did an outstanding job of meeting my requirements. This book does an excellent job of giving you the blueprints, the guidance to start producing lines of code backed by tests. I already knew that I wanted a framework but wasn't sure which one to use. Before I began reading the book, I already knew that I was going to need a way to do unit testing, but I didn't know the best ways to test complex components. I was concerned as to which third-party libraries I should use. Once I started combining all of the pieces into a functional application, how exactly should I do end-to-end UI testing? Simplify Testing with React Testing Library answered those very questions for me.This book is not a good choice if you are entirely new to software testing in general. On the other side, this book does not go into excruciating detail, like programmers sometimes want as reference books - the so-called Bibles on specific topics. This book sits solidly in the middle.If you have ever worked on a software team of any type, you undoubtedly had the experience of walking over to a fellow coder who is the subject matter expert to get "a few pointers," "a few tips" to help you get started in better understanding the subject at hand. You aren't looking for them to hold your hand through the entire learning process, but you would like a little help getting pointed in the right direction and a quick introduction to the lay of the land before you set off on your own. In this case, Scottie is that coworker, that mentor, that you can rely on to get you started on the right foot.

Amazon Verified review

zoha Jul 09, 2021

The author has done an amazing job in communicating the core concepts of RTL. This book goes from the idea of why testing is important into the deeps of implementing it in real-world scenarios. If you are already using React, and looking to further your knowledge with React testing, this is a great guide to get started.

toberlin May 26, 2021

Scottie has a great way of explaining React development and testing. This book has been a huge help for me as I continue to learn React. It is easy to follow with detailed instructions and great examples. I would highly recommend this book to any developer that wants to improve their React testing skills.

Gianna pena Aug 31, 2021

I am thankful with the person that recommended this book to me, I started learning React just a few months ago and I can say that I am hooked with this framework, but I have to recognize that for me is really difficult to test the codes, find bugs :(, so I was struggling a lot to do it due to the nature of react but after I read the book I found the best way to test really complex components. The book is easy to follow with detailed instructions and great examples, well explained and written but also you gonna learn best practices, if you want to improve your testing skill as a developer don't lose the opportunity and read this book, it is really worthy, packed of knowledge and experience. Believe me you will not regret!

Cinthya Cabanzo Aug 30, 2021

Testing is one of those things that is teaching last. It is rare to find courses that include testing within the curriculum. But in the workplace, testing is a must, and this book will help you do it. I love that this book considers every detail. It considers the challenges that you face when working as a developer. And it teaches you from learn to test the DOM, through testing complex components to refactoring legacy applications and UI End-To-End with Cypress. I really would like to find a book that teaches React and testing at the same time.

Simplify Testing with React Testing Library: Create maintainable tests using RTL that do not break with changes

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