Preface
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 utilize this modern, user-friendly tool to test React components, explaining its benefits to reduce risk in React applications.
The book demonstrates code snippets that will allow you to implement RTL with ease, helping you understand the guiding principles of the DOM Testing Library to write tests from the user's perspective. You'll explore the advantages of testing components from the perspective of individuals who will actually use your components, and you'll 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 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 with ease.
