Use Unit Tests to Gain New Power over iOS Code.
Trying to be agile without the technical agile practices leads to failure. Learn how to build maintainable iOS production code and test code. Then you can “respond to change,” because your code won’t fight you.
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Quality Coding is about technical agile practices for iOS developers. While some practices are language-agnostic, three foundational practices can be elusive until you see them come alive within the Apple ecosystem:
Unit Testing
A robust suite of unit tests acts as a safety harness, giving you courage to make bold changes. But there’s an art to making tests that give you useful information, while keeping the tests themselves readable & maintainable.
TDD
Writing unit tests after production code is hard. And such tests may only confirm your biases. Test-driven development (TDD) shapes production code in response to tests, in an evolutionary process. It’s about working with continuous feedback.
Refactoring
Widely misunderstood among developers, “refactoring” isn’t rewriting. Disciplined refactoring is changing the design of your code in small, verified steps. In this way, design can be discovered. Listen to the code, it’ll guide you.
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About Jon Reid.
Jon Reid is the author of iOS Unit Testing by Example and is a leading expert in unit testing and test-driven development (TDD) for iOS. He has been practicing TDD on Apple platforms for 19 years. His consultancy Quality Coding offers training for iOS teams in technical agile practices including unit testing, TDD, and refactoring. Learn more here.
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They Say
Diego Freniche
Mobile Developer
I have to blame Jon. As I read through code, I start thinking about how can I test something, instead of simply adding another “quick fix.” It's paying off, as more and more of the team catch their first bug using tests, or sleep better at night. Even customers are asking for tests now!
Ron Lichty
VP Engineering
I saw Jon speak at Code Camp. Between the content and the presentation style, I realized I'd discovered my second TDD thought leader — that the content was perfect for engineering leaders.
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