atomic-design-poc/docs/backlog/WP-19-e2e-smoke.md

WP-19 — Playwright e2e smoke

Status: todo Phase: 5 — productie-volwassenheid

Why

There is no end-to-end test anywhere in the repo — no Playwright/Cypress config, no e2e/ directory. axe-playwright is already a dependency (used by test-storybook:ci to run axe against Storybook, .storybook/test-runner.ts), but nothing drives the actual running app through a real browser. The GREEN gate proves every unit and component-in-isolation, never a real user flow through the FE+backend wired together — the thing a demo/reference app should be able to prove first.

Read first

• README.md "Run it" + "See every data state (scenario toggle)" — the flows to cover
• docker-compose.yml (the two-service dev topology e2e can run against)
• .storybook/test-runner.ts (existing Playwright-adjacent config in the repo, for browser-launch precedent, though it drives Storybook not the app)
• src/app/shared/infrastructure/scenario.interceptor.ts (the ?scenario= toggle — reuse it for the error-path test instead of mocking the network)
• .github/workflows/ci.yml (the storybook-a11y job's playwright install --with-deps chromium step — same install pattern for a new e2e job)

Decisions (pre-made, don't relitigate)

• Playwright, not Cypress. axe-playwright is already a dependency and the repo already has one Playwright-based CI job (storybook-a11y); adding Cypress would be a second, redundant browser-automation toolchain.
• Smoke-level coverage only: one happy-path flow end to end, one degraded-path flow via ?scenario=. This is not a full e2e suite — it proves the seam works, it doesn't replace component/unit tests.
• Run against the real backend, not a mock server — the point is proving FE+BE integration, which is exactly what unit tests (mocked adapters) don't cover.
• Faked auth (digid.adapter.ts) is used as-is: e2e logs in with any 9-digit BSN, no special e2e auth bypass.

Files

• New playwright.config.ts at repo root — baseURL from an env var (default http://localhost:4200), webServer config that can optionally boot ng serve (skip if CI already starts the app in a prior step — see Steps).
• New e2e/smoke.spec.ts — the happy path.
• New e2e/error-state.spec.ts — the ?scenario=error path.
• package.json — add "e2e": "playwright test" script; @playwright/test devDependency.
• .github/workflows/ci.yml — new job e2e, steps: checkout, setup-node, setup-dotnet, npm ci, npx playwright install --with-deps chromium, start backend (dotnet run --project backend/src/BigRegister.Api &), npm start & (or ng serve backgrounded), wait-on both ports, npm run e2e. timeout-minutes: 15 per the hardened workflow convention already in ci.yml.

Steps

1. Install @playwright/test; scaffold playwright.config.ts with a single chromium project (match test-storybook:ci's browser choice).
2. e2e/smoke.spec.ts: navigate to /login, submit a BSN, land on /dashboard, assert real dashboard content renders (not a loading/error state), navigate into one wizard (herregistratie or registratie change-request), fill the minimum required fields, submit, assert a success state.
3. e2e/error-state.spec.ts: navigate to /dashboard?scenario=error, assert the error alert + "Opnieuw proberen" button render (<app-async>'s error slot), click retry, assert it re-fetches (scenario is per-request so a retry without the query param would succeed — confirm the interceptor's actual behavior first and assert accordingly).
4. Wire the CI job; verify it's independent of (doesn't block or get blocked by) the existing jobs — add to concurrency/timeout-minutes conventions already in ci.yml.
5. Document npm run e2e in README.md's command list.

Acceptance criteria

• npm run e2e passes locally against docker compose up or npm start + dotnet run run manually.
• CI job e2e is green and runs on every PR alongside the existing jobs.
• The happy-path spec exercises a real wizard submit against the real backend (not mocked) and asserts on the resulting UI state.
• The error-path spec exercises <app-async>'s error slot + retry via the real ?scenario=error toggle, not a mocked HTTP response.

Verification

npm run e2e locally; then push a branch and confirm the new e2e CI job appears and passes. Cross-check that a deliberately broken flow (e.g. temporarily rename a required form field) fails the e2e spec, proving it isn't a no-op.

Out of scope

Full e2e coverage of every wizard/flow; visual regression testing; cross-browser matrix (chromium only, matching the existing a11y job); load/performance testing.

Risks

The ?scenario= interceptor is dev-only (isDevMode() gated, per app.config.ts) — confirm the e2e target build runs in dev mode (it does via ng serve/npm start; a production ng build would need the toggle unavailable, which is correct and should be asserted, not worked around). Backend in-memory stores mean e2e runs against a fresh seed each restart — don't assert on data that a previous test run could have mutated; restart the backend per CI run.