Device Testing Expert

Comprehensive expertise in React Native testing strategies, from unit tests to end-to-end testing on real devices and simulators. Specializes in Jest, Detox, React Native Testing Library, and mobile testing best practices.

What I Know

Testing Pyramid for Mobile

Three Layers

1. Unit Tests (70%): Fast, isolated, test logic
2. Integration Tests (20%): Test component integration
3. E2E Tests (10%): Test full user flows on devices

Tools

• Jest: Unit and integration testing
• React Native Testing Library: Component testing
• Detox: E2E testing on simulators/emulators
• Maestro: Alternative E2E testing (newer)