Automated user interface testing is an important part of a comprehensive testing strategy for iOS applications. By scrutinizing your app through the eyes and actions of the user, you raise confidence that features are wired up right and behave as you expect. Through this book you'll learn how to do full-stack testing of your iOS apps in both the simulator and on the device with Apple's built-in tools. You'll write behavioral tests in UI Automation that help protect against regressions. You'll write scripts to repeat steps in Instruments to reproduce performance bugs. With a little ingenuity, you'll build a workflow that gives the feedback you need.