Testing

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1. 01 Explain what makes a good unit test for a React component versus testing implementation details. Medium
2. 02 Design a unit testing strategy for a custom hook with complex async logic. Hard
3. 03 Explain the difference between integration and unit tests in a frontend context. Medium
4. 04 Design an integration test suite for a multi-step checkout flow. Hard
5. 05 Explain the tradeoffs of E2E tests: coverage vs speed vs flakiness. Medium
6. 06 Design an E2E testing strategy for a CI pipeline to minimize flaky test failures. Hard
7. 07 Explain RTL's philosophy of testing behavior over implementation. Medium
8. 08 Debug a flaky RTL test involving async data fetching and act() warnings. Hard
9. 09 Explain how Playwright's auto-waiting reduces flakiness compared to older tools. Medium
10. 10 Design a Playwright test suite covering cross-browser regression for a critical checkout flow. Hard
11. 11 Explain Cypress's architecture and its historical limitations with multi-tab/multi-origin testing. Medium
12. 12 Compare Cypress and Playwright for a large frontend team choosing an E2E framework. Hard
13. 13 Explain how Jest's module mocking and snapshot testing work. Medium
14. 14 Design a testing strategy using Jest for a utility library with 200+ pure functions. Hard