Book Image

Mastering React Test-Driven Development - Second Edition

By : Daniel Irvine
Book Image

Mastering React Test-Driven Development - Second Edition

By: Daniel Irvine

Overview of this book

Test-driven development (TDD) is a programming workflow that helps you build your apps by specifying behavior as automated tests. The TDD workflow future-proofs apps so that they can be modified without fear of breaking existing functionality. Another benefit of TDD is that it helps software development teams communicate their intentions more clearly, by way of test specifications. This book teaches you how to apply TDD when building React apps. You’ll create a sample app using the same React libraries and tools that professional React developers use, such as Jest, React Router, Redux, Relay (GraphQL), Cucumber, and Puppeteer. The TDD workflow is supported by various testing techniques and patterns, which are useful even if you’re not following the TDD process. This book covers these techniques by walking you through the creation of a component test framework. You’ll learn automated testing theory which will help you work with any of the test libraries that are in standard usage today, such as React Testing Library. This second edition has been revised with a stronger focus on concise code examples and has been fully updated for React 18. By the end of this TDD book, you’ll be able to use React, Redux, and GraphQL to develop robust web apps.
Table of Contents (26 chapters)
Part 1 – Exploring the TDD Workflow
Part 2 – Building Application Features
Part 3 – Interactivity
Part 4 – Behavior-Driven Development with Cucumber

Part 4 – Behavior-Driven Development with Cucumber

This part is about behavior-driven development (BDD) using Cucumber tests. Whereas the first three parts were focused on building Jest unit tests at the component level, this part looks at writing tests at the system level—you might also think of these as end-to-end tests. The goal is to show how the TDD workflow applies beyond unit testing and can be used by the whole team, not just developers.

Finally, we end the book with a discussion of how TDD fits within the wider testing landscape and suggestions for how you can continue your TDD journey.

This part includes the following chapters:

  • Chapter 17, Writing Your First Cucumber Test
  • Chapter 18, Adding Features Guided by Cucumber Tests
  • Chapter 19, Understanding TDD in the Wider Testing Landscape