Android Screenshot Testing 📸🛡️

Expert techniques for implementing visual regression testing to ensure UI consistency and catch unintended layout changes automatically.

⚡ When to Use

• UI Consistency: Verifying complex layouts across screen sizes.
• Visual Regression: Catching pixel-level changes in CI/CD.
• Design System Audit: Verifying components against design specs.
• Screenshot Automation: Generating millions of UI variants (Dark mode, RTL, Font scales).
• Test-Driven Design: Testing UI before deploying to devices.

🏗️ Core Tools

1. Paparazzi (Cash App)

• Benefit: Runs entirely on the JVM (Host). NO DEVICE/EMULATOR REQUIRED.
• Use Case: Testing Jetpack Compose components fast and frequently.
• Gradle Task: ./gradlew recordPaparazziDebug / ./gradlew verifyPaparazziDebug