It is intentionally small, but each surface is dense with durable accessibility targets so a few screens cover a large share of the workflows we care about.

Why this app exists

It gives agent-device a stable React Native target that we control.
It makes skillgym prompts concrete: the agent can inspect real app files instead of answering against an imagined UI.
It keeps the number of screens low while still covering roughly 50 practical interaction and verification cases.

Screens

Home: visible-text checks, dismissible banner, modal open/close, async loading, status badge, switch state
Catalog: search debounce, filter chips, long-list scroll, favorite toggles, cart updates, drill-in navigation
Product detail: back navigation, quantity stepper, multiline notes, save action
Checkout form: required-field validation, fill vs type, checkbox state, choice groups, keyboard dismiss, success summary
Settings: switch rows, accordion content, loading and error states, retry flow, destructive-confirm modal

Navigation uses Expo Router native bottom tabs, so the tab bar itself is also part of the test surface.

Coverage map

These are the main case families this app can support without adding more screens:

app open and close
visible text verification with plain snapshot
interactive discovery with snapshot -i
press on stable buttons, pills, and rows
fill on single-line and multiline fields
type after focus for append flows
get text on headings, badges, summaries, and accordion content
is visible and is exists assertions
wait for async loading and success states
diff snapshot after dismissals and submits
long-list scrolling and scrollintoview
selector-based navigation across repeated cards
modal open, cancel, and confirm flows
switch and checkbox state changes
validation-error and recovery loops
retryable error banners
cart counters and quantity changes
screenshot and recording proof capture

Run locally

From the repo root:

pnpm test-app:install
pnpm test-app:ios

Or on Android:

pnpm test-app:install
pnpm test-app:android

If you prefer to work from inside the app folder:

cd examples/test-app
pnpm install --ignore-workspace
pnpm ios

Or on Android:

cd examples/test-app
pnpm install --ignore-workspace
pnpm android

Once the app is running, use agent-device against Agent Device Tester like any other target app.