Mastering React Test-Driven Development: Build rock-solid, well-tested web apps with React, Redux and GraphQL (English Edition)

Implement TDD for your React applications using Jest, React Router, Redux, and GraphQL/Relay, and learn BDD and end-to-end acceptance testing with CucumberJS and Puppeteer

Key Features

Learn the TDD process using the React framework

Build complex, real-world applications with a pragmatic approach to TDD

Use Cucumber for acceptance and behavior-driven development (BDD) testing, incorporating TDD in the wider team

Book Description

Many programmers are aware of test-driven development (TDD), but struggle to apply it beyond basic examples. This React book teaches you how to build complex, real-world applications using 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).

You will practice systematic refactoring while developing your own test framework, and will gain a deep understanding of TDD tools and techniques. You'll also 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.

Fully updated to React 16.9, this book will take you through refactoring codebases needed to use the React Router and Redux libraries via TDD. You'll learn about Redux in depth, with reducers, middleware, sagas, and connected React components. This book will also cover acceptance testing using Cucumber and Puppeteer.

By the end of this book, you'll have got to grips with best practices for TDD and be able to perform acceptance testing for your applications effectively.

What you will learn

Build test-driven applications using React 16.9+ and Jest

Design 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)

Get to know when to be pragmatic and how to apply TDD shortcuts

Trial interaction with browser APIs including fetch and WebSockets

Use Cucumber.js and Puppeteer to build BDD-style acceptance tests for your applications

Develop and test async Redux code using redux-saga and expect-redux

Who this book is for

This book is for JavaScript developers and React programmers who are looking to implement test-driven and behavior-driven approaches for their React applications. A basic understanding of the Git commands will be helpful.

Table of Contents

First Steps with Test-Driven Development

Test-driving Data Input with React

Exploring Test Doubles

Creating a User Interface

Humanizing Forms

Filtering and Searching Data

Test-driving React Router

Test-driving Redux

Test-driving GraphQL

Building a Logo Interpreter

Adding Animation

Working with WebSockets

Writing Your First Acceptance Test

Adding Features Guided by Acceptance Tests

Understanding TDD in the Wider Testing Landscape

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