Mastering React Test-Driven Development

Implement TDD for your React applications using Jest React Router Redux and GraphQL/Relay. Learn BDD and end-to-end acceptance testing with CucumberJS and Puppeteer.Key FeaturesLearn the TDD process using the React frameworkBuild complex real-world applications with a pragmatic approach to TDDUse Cucumber for acceptance and BDD testing bringing TDD to the wider team Book DescriptionMany programmers are aware of TDD but struggle to apply it beyond basic examples. This book teaches how to build complex real-world applications using Test-Driven Development (TDD). It takes a first principles approach to the TDD process using plain Jest and includes test-driving the integration of libraries including React Router Redux and Relay (GraphQL).Readers will practice systematic refactoring while building out their own test framework gaining a deep understanding of TDD tools and techniques. They will learn how to test-drive features such as client- and server-side form validation data filtering and searching navigation and user workflow undo/redo animation LocalStorage access WebSocket communication and querying GraphQL endpoints.The book covers refactoring codebases to use the React Router and Redux libraries. via TDD. Redux is explored in depth with reducers middleware sagas and connected React components. The book also covers acceptance testing using Cucumber and Puppeteer.The book is fully up to date with React 16.9 and has in-depth coverage of hooks and the ‘act’ test helper.What you will learnBuild test-driven applications using React 16.9+ and Jest Build complete web applications using a variety of HTML input elements Understand the different types of test double and when to apply them Test-drive the Integration of libraries such as React Router Redux and Relay (GraphQL) Learn when to be pragmatic and how to apply TDD shortcuts Test-drive interaction with browser APIs including fetch and WebSocketsUse Cucumber.js and Puppeteer to build BDD-style acceptance tests for your applications Build and test async Redux code using redux-saga and expect-reduxWho this book is forThe target audience for this book is JavaScript developers who are looking to implement test-driven and behavior-driven approaches for their React applications. About the Author Daniel Irvine is a software consultant based in London. He is a member of the European software craft community and works with a variety of languages including C# Clojure JavaScript and Ruby. He’s a mentor and coach for junior developers and runs TDD and XP workshops and courses. When he’s not working he spends time cooking and practicing yoga.