Simple JavaScript Automation Unit Testing Using Jest

Objective Learn to implement automated unit testing using Jest in a Node.js application. By the end of this lab, you will: Set up a Node.js project with Jest for unit testing Write unit tests for functions with validation and error handling Understand the difference between statement and branch coverage Run tests and generate coverage reports to evaluate code quality Prerequisites Node.js (version 14 or higher) installed Basic knowledge of JavaScript and Node.js A code editor (e.g., VS Code) Ter