Mobile App Testing

This covers the full testing stack for mobile apps: unit tests with Jest, UI automation with Detox for React Native, XCTest for iOS, Espresso for Android, plus performance and integration testing. You get practical examples of testing components, business logic, and critical user flows. The best practices are sensible: mock your APIs, test on real devices, keep tests isolated, aim for 80% coverage. What I appreciate here is the emphasis on both success and failure paths, which too many teams skip. The reference guides break out platform-specific approaches, so you're not stuck translating iOS patterns to Android or vice versa. Solid foundation if you're setting up CI or finally tackling that untested legacy app.