In
Developer Testing, leading test expert and mentor Alexander Tarlinder presents concise, focused guidance for making new and legacy code far more testable. Tarlinder helps you answer questions like: When have I tested this enough? How many tests do I need to write? What should my tests verify? You’ll learn how to design for testability and utilise techniques like refactoring, dependency breaking, unit testing, data-driven testing, and test-driven development to achieve the highest possible confidence in your software. Through practical examples in Java, C#, Groovy, and Ruby, you’ll discover what works—and what doesn’t.
You can quickly begin using Tarlinder’s technology-agnostic insights with most languages and toolsets while not getting buried in specialist details. The author helps you adapt your current programming style for testability, make a testing mindset “second nature,” improve your code, and enrich your day-to-day experience as a software professional. With this guide, you will
- Understand the discipline and vocabulary of testing from the developer’s standpoint
- Base developer tests on well-established testing techniques and best practices
- Recognise code constructs that impact testability
- Effectively name, organise, and execute unit tests
- Master the essentials of classic and “mockist-style” TDD
- Leverage test doubles with or without mocking frameworks
- Capture the benefits of programming by contract, even without runtime support for contracts
- Take control of dependencies between classes, components, layers, and tiers
- Handle combinatorial explosions of test cases, or scenarios requiring many similar tests
- Manage code duplication when it can’t be eliminated
- Actively maintain and improve your test suites
- Perform more advanced tests at the integration, system, and end-to-end levels
- Develop an understanding for how the organisational context influences quality assurance
- Establish well-balanced and effective testing strategies suitable for agile teams
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