Testing JavaScript Applications, Lucas da Costa

Testing JavaScript Applications

teaches you how to implement an automated testing plan for JavaScript-based web applications.

Summary

Automated testing will help you write high-quality software in less time, with more confidence, fewer bugs, and without constant manual oversight.

Testing JavaScript Applications

is a guide to building a comprehensive and reliable JS application testing suite, covering both how to write tests and how JS testing tools work under the hood. You’ll learn from Lucas de Costa, a core contributor to popular JS testing libraries, as he shares a quality mindset for making testing decisions that deliver a real contribution to your business. You’ll benefit from informative explanations and diagrams, easily-transferable code samples, and useful tips on using the latest and most consolidated libraries and frameworks of the JavaScript ecosystem.

About the technology

Automated testing is essential to delivering good JavaScript applications every time. A complete testing strategy needs to cover functions in isolation, integration between different parts of your code, and correctness from the end user’s perspective. This book will teach you how to deliver reliable software quickly and confidently.

About the book

Testing JavaScript Applications

teaches you how to implement an automated testing plan for JavaScript-based web applications. It describes practical testing strategies, covers useful tools and libraries, and explains how to foster a culture of quality. In this clearly-written, example-rich book, you’ll explore approaches for both backend and frontend applications and learn how to validate your software much more quickly and reliably.

What's inside

Unit, end-to-end, and integration testing

Managing test cost and complexity

Practicing test-driven development

Dealing with external dependencies

Tools like like Jest and Cypress

About the reader

For junior JavaScript developers.

About the author

Lucas da Costa

is a core maintainer of Chai and Sinon.JS, two of the most popular testing tools in the JavaScript ecosystem, and contributed to numerous other open-source projects, including Jest.

Table of Contents

PART 1 - TESTING JAVASCRIPT APPLICATIONS

1 An introduction to automated testing

2 What to test and when?

Part 2 - WRITING TESTS

3 Testing techniques

4 Testing backend applications

5 Advanced backend testing techniques

6 Testing frontend applications

7 The React testing ecosystem

8 Testing React applications

9 Test-driven development

10 UI-based end-to-end testing

11 Writing UI-based end-to-end tests

PART 3 - BUSINESS IMPACT

12 Continuous integration and continuous delivery

13 A culture of quality

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