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

Daniel Irvine

€18.99 per month

4.6 (12 Ratings)

Paperback May 2019 496 pages 1st Edition

Daniel Irvine

€18.99 per month

4.6 (12 Ratings)

Paperback May 2019 496 pages 1st Edition

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Key benefits

Learn the TDD process using the React framework
Build complex, real-world applications with a pragmatic approach to TDD
Use Cucumber for acceptance and BDD testing, bringing TDD to the wider team

Description

Many 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.

Who is this book for?

The target audience for this book is JavaScript developers who are looking to implement test-driven and behavior-driven approaches for their React applications.

What you will learn

Build 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 WebSocket
Use Cucumber.js and Puppeteer to build BDD-style acceptance tests for your applications
Build and test async Redux code using redux-saga and expect-redux

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

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Product Details

Publication date : May 03, 2019

Length: 496 pages

Edition : 1st

Language : English

ISBN-13 : 9781789133417

Category :

Web Development

Languages :

JavaScript

Concepts :

Test Driven Development

Tools :

GraphQL

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20 Chapters

Section 1: First Principles of TDD

First Steps with Test-Driven Development

Technical requirements

Creating a new React project from scratch

Displaying data with your first test

Refactoring your work

Writing great tests

Rendering lists and detail views

Summary

Exercises

Further learning

Test-driving Data Input with React

Extracting a test helper

Adding a form element

Accepting text input

Selecting from a dropdown

Making a choice from radio buttons

Summary

Exercises

Further learning

Exploring Test Doubles

What is a test double?

Submitting forms using spies

Stubbing the fetch API

Extracting test helpers

Summary

Exercises

Further learning

Creating a User Interface

Fetching data on load with useEffect

Using props within useEffect

Passing customer data through to AppointmentForm

Working with the shallow renderer

Building a new root component

Summary

Further learning

Section 2: Building a Single-Page Application

Humanizing Forms

Performing client-side validation

Handling server errors

Indicating that the form has been submitted

Summary

Exercises

Further learning

Filtering and Searching Data

Displaying tabular data fetched from an endpoint

Paging through a large data set

Filtering data

Adding table row actions

Summary

Exercises

Test-driving React Router

General rules for test-driving React Router

Building a root component

Using the location query string to store component state

Test-driving Redux

Test-driving a Redux saga

Making asynchronous requests with sagas

Switching out component state for Redux state

Shifting workflow to Redux

Test-driving GraphQL

Testing the Relay environment

Building the GraphQL reducer

Building the CustomerHistory component

Summary

Exercises

Further learning

Section 3: Interactivity

Building a Logo Interpreter

Studying the Spec Logo user interface

Undoing and redoing user actions in Redux

Saving to LocalStorage via Redux middleware

Changing keyboard focus

Summary

Further learning

Adding Animation

Isolating components for animation

Animating with requestAnimationFrame

Summary

Exercises

Working with WebSockets

Designing a WebSocket interaction

Test-driving a WebSocket connection

Streaming events with redux-saga

Section 4: Acceptance Testing with BDD

Writing Your First Acceptance Test

Integrating Cucumber and Puppeteer into your code base

Writing your first Cucumber test

Using data tables to perform setup

Summary

Adding Features Guided by Acceptance Tests

Adding acceptance tests for a dialog box

Fixing acceptance tests by test-driving production code

Adding better wait support

Exercises

Summary

Understanding TDD in the Wider Testing Landscape

Test-driven development as a testing technique

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About the author

Daniel Irvine

Daniel Irvine is a UK-based software consultant. He helps businesses simplify their existing codebases and assists dev teams in improving the quality of their software using eXtreme programming (XP) practices. He has been coaching developers for many years and co-founded the Queer Code London meetup.

See other products by Daniel Irvine

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

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