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Testing Interview Questions | FineFrontend

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JavaScript logic, React components, accessibility, API scenarios, and browser user flows.

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01Question 1: What is unit testing?

02Question 2: What is component testing?

03Question 3: What is integration testing?

04Question 4: What is end-to-end testing?

05Question 5: What is the difference between Jest and Vitest?

06Question 6: What is React Testing Library?

07Question 7: What are Playwright and Cypress used for?

08Question 8: Why mock API requests in frontend tests?

09Question 9: Why test accessibility?

10Question 10: Which UI states should a data-fetching component test?

11Question 11: What is Vue Test Utils, and what should a basic Vue component test verify?

12Question 12: What is Angular TestBed used for?