Android Testing Standards

Priority: P0

Implementation Guidelines

Unit Tests

• Scope: ViewModels, Usecases, Repositories, Utils.
• Coroutines: Use runTest (kotlinx-coroutines-test). Use MainDispatcherRule to mock Main dispatcher.
• Mocking: Use MockK.

UI Integration Tests (Instrumentation)

• Scope: Composable Screens, Navigation flows.
• Rules: Use createAndroidComposeRule + Hilt (HiltAndroidRule).
• Isolation: Fake repositories in DI modules (@TestInstallIn).

Anti-Patterns

• Real Network: **No Real APIs**: Always mock network calls.
• Flaky Delays: **No Thread.sleep**: Use IdlingResource or 'waitUntil'.

References

• Test Rules