In this chapter, we’re going to learn some concepts and features about jest – a JavaScript testing framework – such as different types of matchers, the powerful and flexible expect, the extremely useful mock for unit testing, and so on. Additionally, we will learn how to arrange our test suite in an easy-to-maintain manner and leverage the best practices from real-world projects.
Firstly, you will see how to set up your environment to write our first test. We will be using ES6 as the primary programming ...
