A11y Testing for Dynamic Interfaces
Test keyboard and screen reader behavior in live-updating UIs.
Pattern level: meso
TL;DR
Treat a11y behavior as a first-class contract: focus order, announcements, and keyboard loops.
Checklist
- Primary task is fully keyboard-operable.
- Dynamic updates do not steal focus.
- Live region announcements are concise and meaningful.
Testing + Accessibility Rubric
| Category | Level | Requirement | Done When |
|---|---|---|---|
| functional | unit | State transitions handle loading, success, empty, and error. | Reducer/state machine tests cover all transitions. |
| functional | integration | Client correctly maps API contracts into UI-ready view models. | Contract fixtures pass with no runtime shape mismatch. |
| a11y | integration | Full keyboard flow works for primary interaction loop. | Tab/Shift+Tab/Enter/Escape scenarios pass for critical controls. |
| a11y | e2e | Dynamic updates expose meaningful live region announcements. | Manual SR checks validate announcement timing and text quality. |