Test-driven development has been around for a while and many people have still not adopted it. The reason behind this is that TDD is difficult to master. Even though the theory is very easy to grasp, it takes a lot of practice to become really proficient with it. The authors of this book have been practicing TDD for years and will try to pass on their experience to you. They are developers and believe that the best way to learn some coding practice is through code and constant practice. This book follows the same philosophy. We'll explain all the TDD concepts through exercises. This will be a journey through TDD best practices applied to Java development. At the end of it, you will earn a TDD black belt and have one more tool in your software craftsmanship tool belt.
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Test-Driven Java Development, Second Edition
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Test-Driven Java Development, Second Edition
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Overview of this book
Test-driven development (TDD) is a development approach that relies on a test-first procedure that emphasizes writing a test before writing the necessary code, and then refactoring the code to optimize it.The value of performing TDD with Java, one of the longest established programming languages, is to improve the productivity of programmers and the maintainability and performance of code, and develop a deeper understanding of the language and how to employ it effectively.
Starting with the basics of TDD and understanding why its adoption is beneficial, this book will take you from the first steps of TDD with Java until you are confident enough to embrace the practice in your day-to-day routine.You'll be guided through setting up tools, frameworks, and the environment you need, and we will dive right into hands-on exercises with the goal of mastering one practice, tool, or framework at a time. You'll learn about the Red-Green-Refactor procedure, how to write unit tests, and how to use them as executable documentation.With this book, you'll also discover how to design simple and easily maintainable code, work with mocks, utilize behavior-driven development, refactor old legacy code, and release a half-finished feature to production with feature toggles.You will finish this book with a deep understanding of the test-driven development methodology and the confidence to apply it to application programming with Java.
Table of Contents (14 chapters)
Preface
Free Chapter
Why Should I Care for Test-Driven Development?
Tools, Frameworks, and Environments
Red-Green-Refactor – From Failure Through Success until Perfection
Unit Testing – Focusing on What You Do and Not on What Has Been Done
Design – If It's Not Testable, It's Not Designed Well
Mocking – Removing External Dependencies
TDD and Functional Programming – A Perfect Match
BDD – Working Together with the Whole Team
Refactoring Legacy Code – Making It Young Again
Feature Toggles – Deploying Partially Done Features to Production
Putting It All Together
Leverage TDD by Implementing Continuous Delivery
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