dorfteich/apps/web/e2e/a11y.spec.ts
Claude Opus 5 9c87a14f51
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#301: dump raw box metrics from the reflow guard
Two rounds now reported no element past the viewport edge while the
document still claimed 417px of overflow — a combination that rules out
every hypothesis I had, including my own filter.

So stop inferring. The guard now prints the html/body metrics, every
element whose own content is wider than its box (with its overflow-x, so
the intentional scrollers are distinguishable), and every box reaching
past the edge with no filtering at all. Diagnostics ride in the assertion
message, not the compared value, so they show up even when they match.
2026-08-01 08:10:31 +02:00

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import AxeBuilder from '@axe-core/playwright';
import { expect, test, type Page } from '@playwright/test';
import { contextForUser } from './helpers';
/**
* A11y-Smoke-Pack (issue #171): axe-core-Scan der Kern-Oberflächen gegen
* WCAG 2.1 A/AA. Regressionsschutz für das Audit vom 21.07.2026 (Bericht im
* Workspace, Befunde A11Y-001…024) — die Screens hier waren nach den Fixes
* der Issues #162#170 verletzungsfrei; jede neue Verletzung bricht den
* Build. Best-Practice-Regeln (axe-Tag best-practice) prüfen wir hier
* bewusst NICHT, nur normative WCAG-Kriterien.
*
* Seit issue #180 läuft jeder Scan in BEIDEN Farbschemata: emulateMedia
* setzt prefers-color-scheme, theme-init.js löst den Default „System“ zum
* konkreten data-theme auf, axe misst dann die echten Dark-Token-Farben.
*/
const BASE = process.env.E2E_BASE_URL ?? 'http://localhost:5173';
const TAGS = ['wcag2a', 'wcag21a', 'wcag2aa', 'wcag21aa'];
const SCHEMES = ['light', 'dark'] as const;
/** Bewusst tolerierte Regel-IDs — nur mit Begründung ergänzen. */
const ALLOWED_RULES: string[] = [];
async function expectClean(page: Page, label: string): Promise<void> {
const results = await new AxeBuilder({ page }).withTags(TAGS).analyze();
const violations = results.violations.filter((v) => !ALLOWED_RULES.includes(v.id));
expect(
violations.map((v) => ({
rule: v.id,
impact: v.impact,
help: v.help,
nodes: v.nodes.slice(0, 5).map((n) => n.target),
})),
`axe-Verletzungen auf ${label}`,
).toEqual([]);
}
for (const scheme of SCHEMES) {
test.describe(`${scheme} scheme`, () => {
test(`login page passes the axe WCAG A/AA scan (${scheme})`, async ({ page }) => {
await page.emulateMedia({ colorScheme: scheme });
await page.goto('/login');
await page.waitForLoadState('networkidle');
await expectClean(page, `/login (${scheme})`);
});
test(`reading and editing a page passes the axe WCAG A/AA scan (${scheme})`, async ({
browser,
}) => {
const context = await contextForUser(browser, BASE, 'fixture-user');
const page = await context.newPage();
await page.emulateMedia({ colorScheme: scheme });
await page.goto('/p/content-fixtures/every-element');
await page.waitForLoadState('networkidle');
await expectClean(page, `Lesemodus every-element (${scheme})`);
await page.locator('.editor-page__mode-toggle').click();
await page.locator('.ProseMirror[contenteditable="true"]').waitFor({ timeout: 10_000 });
await page.waitForTimeout(500);
await expectClean(page, `Editor every-element (${scheme})`);
await context.close();
});
test(`a classified page shows the marking top+bottom and passes axe (${scheme})`, async ({
browser,
}) => {
const context = await contextForUser(browser, BASE, 'fixture-user');
const page = await context.newPage();
await page.emulateMedia({ colorScheme: scheme });
await page.goto('/p/content-fixtures/classified-note');
await page.waitForLoadState('networkidle');
// Kennzeichnung oben UND unten (issue #206, ADR 0022) — fester
// Wortlaut, nicht lokalisiert.
const banners = page.locator('.classification-banner');
await expect(banners).toHaveCount(2);
await expect(banners.first()).toContainText('VS NUR FÜR DEN DIENSTGEBRAUCH');
await expect(banners.last()).toContainText('VS NUR FÜR DEN DIENSTGEBRAUCH');
await expectClean(page, `Eingestufte Seite classified-note (${scheme})`);
await context.close();
});
test(`user settings pass the axe WCAG A/AA scan (${scheme})`, async ({ browser }) => {
const context = await contextForUser(browser, BASE, 'fixture-user');
const page = await context.newPage();
await page.emulateMedia({ colorScheme: scheme });
await page.goto('/settings');
await page.waitForLoadState('networkidle');
await expectClean(page, `/settings (${scheme})`);
await context.close();
});
test(`admin area passes the axe WCAG A/AA scan (${scheme})`, async ({ browser }) => {
const context = await contextForUser(browser, BASE, 'fixture-admin');
const page = await context.newPage();
await page.emulateMedia({ colorScheme: scheme });
await page.goto('/admin');
await page.waitForLoadState('networkidle');
// Personenliste sichtbar, inkl. der Icon-Aktionen (issue #175).
await page.locator('.user-manager__table .user-row').first().waitFor();
await expectClean(page, `/admin (${scheme})`);
await context.close();
});
});
}
/**
* Reflow (WCAG 2.1 SC 1.4.10, issue #301): bei 320 px CSS-Breite — was 400 %
* Zoom auf 1280 px entspricht — darf die Seite nicht seitenweit horizontal
* scrollen. axe prüft das NICHT, das Kriterium ist nicht maschinell aus dem
* DOM ableitbar; deshalb ein eigener Zaun.
*
* Schlägt er an, nennt er die überstehenden Elemente. Ohne diese Diagnose
* weiß man nur DASS es überläuft und muss im Browser bisektieren.
*/
const NARROW = { width: 320, height: 800 };
async function expectNoHorizontalScroll(page: Page, label: string): Promise<void> {
const report = await page.evaluate(() => {
const doc = document.documentElement;
const limit = doc.clientWidth;
const describe = (el: Element): string => {
const cls =
el.className && typeof el.className === 'string'
? `.${el.className.trim().split(/\s+/).join('.')}`
: '';
return `${el.tagName.toLowerCase()}${cls}`;
};
// Every element whose own content is wider than its box. One of these is
// the source; the ones that scroll it away on purpose are marked.
const overflowing: string[] = [];
for (const el of Array.from(document.querySelectorAll('*'))) {
if (el.scrollWidth > el.clientWidth + 1 && el.clientWidth > 0) {
const overflowX = getComputedStyle(el).overflowX;
overflowing.push(
`${describe(el)} client=${el.clientWidth} scroll=${el.scrollWidth} overflow-x=${overflowX}`,
);
}
}
// Raw: every box reaching past the viewport, no filtering at all.
const past: string[] = [];
for (const el of Array.from(document.querySelectorAll('body *'))) {
const rect = el.getBoundingClientRect();
if (rect.width > 0 && rect.right > limit + 1) {
past.push(`${describe(el)} right=${Math.round(rect.right)} w=${Math.round(rect.width)}`);
}
}
return {
overflowBy: doc.scrollWidth - limit,
viewport: `html client=${limit} scroll=${doc.scrollWidth} | body client=${document.body.clientWidth} scroll=${document.body.scrollWidth} rect=${Math.round(document.body.getBoundingClientRect().width)}`,
overflowing: overflowing.slice(0, 15),
past: past.slice(0, 15),
};
});
const diagnosis = [
`${label}: horizontaler Überlauf bei 320 px`,
report.viewport,
`eigener Inhaltsüberlauf: ${JSON.stringify(report.overflowing, null, 1)}`,
`Boxen über dem Rand: ${JSON.stringify(report.past, null, 1)}`,
].join('\n');
expect({ overflowBy: report.overflowBy }, diagnosis).toEqual({ overflowBy: 0 });
}
test.describe('reflow at 320px', () => {
test('user settings do not scroll horizontally at 320px', async ({ browser }) => {
const context = await contextForUser(browser, BASE, 'fixture-user');
const page = await context.newPage();
await page.setViewportSize(NARROW);
await page.goto('/settings');
await page.waitForLoadState('networkidle');
// Die Sitzungstabelle rendert asynchron und ist der breiteste Inhalt —
// ohne sie misst der Zaun eine halb aufgebaute Seite.
await page.locator('.table tbody tr').first().waitFor();
await expectNoHorizontalScroll(page, '/settings');
await context.close();
});
});