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Here `expect(false).toBe(true)` fails, so the test fails overall.",{"id":214,"topic":9,"difficulty":171,"body":215,"options":216,"correct_key":181,"explanation":225},"019f71b0-dbb7-7059-9f4a-775c7f252ed1","What is `beforeEach()` used for in a test suite?",[217,219,221,223],{"key":175,"text":218},"Running setup code once before all tests in a file",{"key":178,"text":220},"Skipping a test conditionally",{"key":181,"text":222},"Running setup code before every individual test in scope",{"key":184,"text":224},"Restoring mocked modules after the test file completes","`beforeEach()` registers a callback that runs before every individual test within its scope, useful for resetting fresh state for each test.",{"id":227,"topic":9,"difficulty":171,"body":228,"options":229,"correct_key":178,"explanation":238},"019f71b0-dbb7-7668-8af9-43ada7a1495d","```json\n{\n  \"name\": \"sample-app\",\n  \"scripts\": {\n    \"test\": \"jest\",\n    \"start\": \"node index.js\"\n  }\n}\n```\nRunning `npm test` in this project executes which command?",[230,232,234,236],{"key":175,"text":231},"`node index.js`",{"key":178,"text":233},"`jest`",{"key":181,"text":235},"`npm install`",{"key":184,"text":237},"Nothing, because `npm test` requires a `pretest` script","`npm test` runs whatever command is defined under `scripts.test` in `package.json`, which here is `jest`.",{"id":240,"topic":9,"difficulty":171,"body":241,"options":242,"correct_key":175,"explanation":251},"019f71b0-dbb7-7d08-b273-1a8071798dac","Why are testing libraries like Jest or Mocha typically listed under `devDependencies` instead of `dependencies` in `package.json`?",[243,245,247,249],{"key":175,"text":244},"Because they are only needed during development\u002Ftesting, not in the running production app",{"key":178,"text":246},"Because devDependencies are installed faster than dependencies",{"key":181,"text":248},"Because npm forbids test tools from being regular dependencies",{"key":184,"text":250},"Because devDependencies are automatically excluded from `package-lock.json`","`devDependencies` lists packages needed only for development and testing workflows; 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