I',m actually working with tests in React and JS, using Jest, however I need to be using some other extra tools like Enzyme. What is the principal tool used in your book?, do you speak about another testing tools?
Given your situation, I think you will find chapter 6 amazingly useful. It compares multiple different tools to help you test React applications within Jest and explains how they work.
The main tool I use to test React applications in the book is react-testing-library (combined with Jest). It will allow you to render and test components.
Throughout the book, I also cover multiple other tools like Cypress, Sinon's fake timers, and Nock, for example. As you go through the pages you will find many different tools and advice on how to use them in different situations.
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Building a Better World in your Backyard by Paul Wheaton and Shawn Klassen-Koop