iOS Unit Testing by Example

This book covers the topic of unit testing in iOS development using XCTest in Swift. It emphasizes the benefits of automatic unit testing and offers detailed instruction on how to write unit tests for all of your code, even legacy code. The book expands on traditional iOS unit testing methods to include view controllers and offers insights on avoiding common mistakes with XCTest. With good unit tests, readers are empowered to make bold changes to their code with less risk and more confidence.