The subtitle of this book is Rapid, Confident, Maintainable Code, and author Dr. Venkat Subramaniam shows that whether you use Node.js, Express, MongoDB, jQuery, AngularJS, or directly manipulate the DOM, you can test-drive JavaScript, repaying your investment in writing tests with code that's predictable and cost-effective to change.

The author shows how to write meaningful, deterministic automated tests with Karma, Mocha, and Chai. You're shown how to test asynchronous JavaScript, how to deal with dependencies, measure code coverage, and create lightweight modular designs of both server-side and client-side code.

Author: Dr. Venkat Subramaniam
Publisher: Pragmatic Bookshelf
Date: October 2016
Pages: 200
ISBN: 978-1680501742
Print: 1680501747
Kindle: B01MQGX4CA
Audience: JavaScript programmers
Level: advanced
Category: JavaScript 

• Write tests that focus on the important things, like the pre-conditions, the invariants, complex logic, and gnarly edge cases. 
• Design asynchronous functions using automated tests.
• Decouple and mock out intricate dependencies such as the DOM, geolocation API, file and database access, and Ajax calls to remote servers.
• Test code that uses Node.js, Express, MongoDB, jQuery, and AngularJS.
• Know when and how to use tools such as Chai, Istanbul, Karma, Mocha, Protractor, and Sinon.
• Create tests with minimum effort and run them fast without having to spin up web servers or manually edit HTML pages to run in browsers.
• Explore end-to-end testing to ensure all parts are wired and working well together.

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