How do I set up test coverage for my Node.js application?

How do I set up test coverage for my Node.js application?

To set up test coverage in your Node.js application, you can use tools like Istanbul or Jest. Would you like a step-by-step guide?

Yes, please provide the steps for using Jest.

First, install Jest and the necessary coverage tool by running npm install --save-dev jest and npm install --save-dev babel-jest. Then, add a test script in your package.json.

What should I include in the test script?

You can include something like this: "test": "jest --coverage". This will run your tests and generate a coverage report.

How can I view the coverage report?

After running your tests, Jest will generate a coverage folder. You can open the index.html file in that folder to view the report.