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Tdd

Guide test-driven development using red-green-refactor. Use when building a new hook, fixing a bug test-first, or following TDD workflow in this React hooks library.

helderberto Updated
Web & Frontend

File contents

This is a React hooks library — all behavior is testable via renderHook.

Cycle

Red

Write a failing test in src/__tests__/<hook-name>.test.ts:

  • Cover: hook is defined, mounted state, unmounted state, any side effects
  • Use renderHook from @testing-library/react
  • Run npm test and confirm it fails for the right reason

Green

Implement the minimum hook code in src/<hook-name>.ts to pass:

  • Run npm test and confirm all tests pass

Refactor

Clean up without breaking tests:

  • Run npm run lint and npm run test:tsc to verify

Reference patterns

  • Mount/unmount: src/__tests__/use-is-mounted-ref.test.ts
  • Side effects/cleanup: src/__tests__/use-abort-controller.test.ts

helderberto/use-is-mounted-ref/tree/main/.claude/skills/tdd commit ce8d381e9b

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Frequently asked questions

npx skillmds@latest add helderberto/tdd-3