Testing Custom Hooks (Preview)
Preview how to test custom hooks: build a tiny harness component, drive state changes, and assert outputs via DOM or logs.
Hook testing preview
Goal: Verify a hook’s behavior via a tiny harness component.
- Drive inputs
- Observe returned values
- Check effects/cleanup
Strategy: harness component
Strategy:
- Build a small component that uses the hook
- Expose buttons/inputs to trigger changes
- Assert via visible text or console logs
All lessons in this course
- Extracting Logic to Hooks: Parameters & Returns
- Naming, Memoization & Effect Hygiene
- Testing Custom Hooks (Preview)