Test-Driven Development in JavaScript with Jest

Writing reliable JavaScript code requires more than just luck; it demands a structured approach to testing. This text-based course guides you through the principles of Test-Driven Development (TDD) to help you build bug-free applications with confidence. By adopting a test-first mindset, you will learn to use Jest to structure, mock, and validate your JavaScript logic step by step. What you will learn: - Understand the core Red-Green-Refactor cycle of Test-Driven Development. - Configure Jest for modern JavaScript environments, including ES modules. - Write unit tests for synchronous and asynchronous JavaScript code. - Implement robust mocking strategies for external APIs and modules. - Apply TDD practices to refactor legacy code safely without breaking functionality. - Structure test suites that serve as clear, living documentation. The course begins with key terminology and testing fundamentals before moving into practical TDD cycles and mocking techniques. Designed for beginner to intermediate JavaScript developers, this course requires no prior testing experience. Start reading today to elevate your code quality with Test-Driven Development.