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Vansh Khandelwal

Full Stack Web Devel... • 5m

Unit testing is a critical practice in software development that ensures individual code units work as expected. It helps catch bugs early, simplifies refactoring, and improves code quality and reliability. Unit tests verify the smallest parts of an application, like functions or methods, in isolation from other parts. In JavaScript, popular testing frameworks include Jest, Mocha, and Jasmine. To start, set up a project, install a testing framework like Jest, and write test cases that cover different scenarios for each function. Focus on testing small units, keeping tests isolated, and using descriptive names for clarity. Consider using mocking techniques for external dependencies and writing tests for both synchronous and asynchronous functions. Unit testing offers a safety net during development, ensuring that changes don’t introduce new bugs. Consistent testing practices result in stable, maintainable, and high-quality codebases, making it an essential habit for developers.

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