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What is Mocha?

Q: What is Mocha?

Short answer: Mocha is a test runner that executes your test files, organizes tests in suites (describe), and allows async testing. It does not provide assertions, so it’s often paired with assertion libraries like Chai. Real-world example (ShopNest) A ShopNest BFF in Node.js aggregates catalog and price APIs for the React storefront. Say this in the interview Define — one clear sentence (the short answer above). Example — relate it to a project like ShopNest or your real work. Trade-off — when you would not use it.

Short answer: Mocha is a test runner that executes your test files, organizes tests in suites (describe), and allows async testing. It does not provide assertions, so it’s often paired with assertion libraries like Chai.

Real-world example (ShopNest)

A ShopNest BFF in Node.js aggregates catalog and price APIs for the React storefront.

Say this in the interview

Define — one clear sentence (the short answer above).
Example — relate it to a project like ShopNest or your real work.
Trade-off — when you would not use it.

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