# E2E — Playwright

Track Q (`docs/PRODUCT-PLAN-v3.1-DELIVERY-PLAN.md`, Q1). None of this existed before 2026-08-18.

## Run

```bash
npm run e2e          # headless, boots the dev server automatically
npm run e2e:ui        # interactive runner
npm run e2e:report    # last HTML report
```

Against a different server (staging, a locally-started backend):

```bash
BASE_URL=https://staging.example.com npm run e2e
```

## What this suite currently covers, and what it doesn't

`environment.ts` ships `useMockData: false` — the dev server this suite boots hits real `/api/` endpoints, which 404 (`../docs/backend/BACKEND-INTEGRATION.md` — no backend is running anywhere this session can reach). The product catalog itself renders from a separate mocked bootstrap/catalog path (`useMockBootstrapOnLocal: true`), so real prices and real currency conversion ARE exercised — `smoke.spec.ts` explicitly ignores the expected 404 console noise rather than pretending it isn't there.

**This is not the same guarantee as running against a live backend.** Checkout, payment, and anything behind a real endpoint are not covered until `BASE_URL` points at a live environment. Confirmed once, concretely: on the first run, this suite caught a real bug (`@marketplaces/auth` shipping without Angular Ivy metadata, breaking app bootstrap) and a real test defect (a duplicate hidden dropdown made the first currency-switch attempt click a no-op element) — both fixed as part of standing this suite up. See the commit history in `src/main.ts` and this directory for what each was.

## Files

| File | Covers |
|---|---|
| `currency-switch.spec.ts` | `160 RUB` must not silently become `160 USD` on a currency switch — Track Q Q4, and the regression guard `../docs/backend/BACKEND-INTEGRATION.md` §5 exists to close. Written **before** the checkout money-truth rewrite (F10–F16 in the frontend backlog), specifically so that rewrite has a net under it. |
| `smoke.spec.ts` | App boots, storefront renders, no console errors on first paint. |
| `admin-dev-bypass.spec.ts` | `?devBypassAdmin=true` actually reaches the admin shell without a Telegram login (Track Q F59). |
| `checkout-request-shape.spec.ts` | The amount actually charged must be computed server-side, never sent by the client (`PHASE-1-MONEY-FX-PAYMENTS-CONTRACT.md` §5.2). Was red for a real bug, not a harness issue — root-caused 2026-08-21, see the `fakeCustomerSession` comment and `api-headers.interceptor.ts`. |
| `checkout-idempotent-click.spec.ts` | Double-clicking checkout sends exactly one checkout-session request (Track Q F62). Same root cause and fix as above. |

## Adding a test

- Prefer existing CSS classes / ARIA roles already in the templates (`.currency-button`, `role="option"`, etc.) over inventing new selectors — there are no `data-testid` attributes in this codebase yet, and adding them project-wide is out of scope for this suite.
- One behavior per test. Name the file after the behavior, not the page.
- If a test needs backend state that mock data can't produce, mark it `test.skip(!process.env.BASE_URL, 'needs a live backend')` rather than deleting it — it documents the gap.
