Chai

A user-friendly BDD/TDD assertion library for JavaScript testing frameworks, designed to enhance your test automation experience.

Chai is a versatile assertion library tailored for both Node.js and browser environments, seamlessly integrating with popular testing frameworks like Mocha. Its syntax is clean and intuitive, resembling natural language, which makes it easy for developers to write tests that evaluate applications from both behavioral and functional perspectives. Chai empowers developers to extend its built-in assertions through a rich ecosystem of plugins and interfaces, ensuring that all testing needs are met. Whether you're working in Node.js or a browser, Chai is chain-agnostic, providing flexibility and ease of use in your testing workflow.