Implementing React tests with Jest

In this section, we are going to turn our attention to creating automated tests for the frontend with Jest. We are going to start by testing a simple function so that we can get familiar with Jest before moving on to testing a React component.

Getting started with Jest

Jest is the de-facto testing tool in the React community and is maintained by Facebook. Jest is included in Create React App (CRA) projects, which means that it is already installed and configured in our project. We'll start to get familiar with Jest by adding some unit tests on the required function in the Form component. So, let's open our frontend project in Visual Studio Code and carry out the following steps...