1-Mocha is one of the most widely used testing frameworks in the Node.js community. It offers great flexibility and supports various assertion libraries, making it suitable for both unit and integration testing.

Install as a development dependency

npm install --save-dev mocha

2-Jest has gained significant popularity due to its user-friendly interface and out-of-the-box features. Developed by Facebook, Jest is designed to provide a zero-config experience for testing JavaScript and Node.js applications.

Install Jest

npm install --save-dev jest

3-Jasmine is an influential testing framework that focuses on behavior-driven development (BDD) principles. With its expressive syntax, Jasmine enables developers to write tests.

Install Jasmine

npm install --save-dev jasmine

Initialise Jasmine in your project

npx jasmine init