Comprehensive Testing Strategy (Unit, Integration, UI, E2E) Questions
Comprehensive testing strategy for production mobile apps. Unit testing: testing business logic in isolation, mocking dependencies. Integration testing: testing interactions between layers and components. UI testing: testing user-facing features with appropriate frameworks. E2E testing: full user flow testing. Tools: XCTest (iOS), JUnit/Espresso (Android), Detox for cross-platform. Test coverage goals and test pyramid principles. Avoiding flaky tests, managing test data, CI/CD integration. Different testing strategies for different components.
EasyTechnical
40 practiced
Describe a practical strategy for managing test data for mobile E2E tests that run in CI and on device farms. Cover seeding test accounts, resetting app state, handling backend data dependencies, isolating parallel runs, and strategies to avoid test interference between runs.
HardTechnical
34 practiced
Design an automated and manual security testing plan for mobile apps focused on encryption, secure storage (Keychain and Keystore), certificate pinning, local data leakage, and API authentication. Specify which checks can be automated in CI, which require manual penetration testing, and how to integrate security checks into the release workflow.
HardTechnical
58 practiced
For a cross-platform codebase (for example Flutter or React Native) with some native modules, propose how to allocate testing responsibilities: which logic to cover with unit tests in shared code, which native features require per-platform tests, and how to combine native UI tests with cross-platform E2E tests to minimize duplication and maximize coverage.
EasyTechnical
35 practiced
List the core goals and best practices for unit testing mobile application code. Include guidance on what to unit test (examples of business logic vs UI), how to handle external dependencies via mocking or stubbing, naming and structure conventions, and a brief checklist to judge if a function is suitable for a unit test.
HardBehavioral
40 practiced
Tell me about a time you advocated for improving testing practices on a mobile engineering team. Describe the problems you observed, the changes you proposed (tools, process, or refactor), how you prioritized and implemented them, metrics you used to measure success, and how you handled resistance from teammates or product managers.
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