Overview

Implementing Test-Driven Development with xUnit and Jest: Master the Red-Green-Refactor Cycle to Write Cleaner Code and Ship Faster Features Are your tests slowing you down instead of speeding you up? Do refactors feel risky, and deadlines force you to cut corners? Many developers know the importance of testing but struggle to make it practical, efficient, and consistent in real-world projects. This book provides the solution: a proven, hands-on guide to mastering Test-Driven Development (TDD) with xUnit, JUnit 5, and Jest. By focusing on the red-green-refactor cycle, it shows you how to transform tests from a chore into a powerful tool for design, safety, and speed. Whether you work on backend systems in .NET or Java, or build rich frontends in JavaScript and TypeScript, you'll gain the skills to create resilient, maintainable software that scales. Through practical examples and battle-tested workflows, you'll learn how to: Write meaningful tests first, ensuring every line of code has a purpose. Apply xUnit and JUnit 5 effectively for backend testing, with real integration into CI/CD pipelines. Use Jest and modern libraries to test frontend logic and components with confidence. Refactor with freedom, supported by a safety net of robust, fast-running tests. Incorporate strategies for mocking, contract testing, performance checks, and distributed systems. Balance speed and depth under deadlines without sacrificing quality. Build test-friendly workflows for both startups chasing speed and enterprises managing scale. This isn't theory-it's packed with actionable techniques, runnable code, and real-world case studies that mirror the challenges developers face daily. You'll discover how to replace fragile, afterthought testing with developer-driven TDD that accelerates delivery, improves design, and reduces bugs before they ever reach production. If you're ready to write cleaner code, ship faster features, and gain the confidence that comes from knowing your work is solid, this book is for you. Stop fighting your tests. Start letting them power your development. Order your copy today and transform the way you build software.

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