Course Content
Expert React
Expert React
4. Formik
6. Next Steps
Get Started with Jest
Jest is a testing framework widely used in React projects. It provides a bunch of useful utilities. Jest is easy to configure, supports code coverage, and is a powerful tool for testing React components and applications.
Setting up a new React project with Jest
Step 1: Create a new React project
Let's create a new React project using create-react-app
in the terminal:
Step 2: Install Jest library
Since Jest is not pre-installed with create-react-app
, we must install it separately to enable testing for the React project. To install Jest, open the terminal and run the following command:
This will download and install Jest. Additionally, it will update the package.json
file to include Jest in the dependencies
section.
The package.json
should now include Jest similar to the following:
Project overview
The Jest learning will consist of theoretical and practical parts. In the following chapters, we will learn how to write tests for the Counter App. This approach will help us understand the theory better and apply our knowledge immediately through practical examples.
Note
The app has been entirely built but still lacks tests. Please take the time to inspect the app and ensure that everything is clear. As in the following chapters, we will dive into testing.
Everything was clear?