Utils

untestutils/utils — helpers for real-runtime checks (optional peer: playwright-core).

import {
  setLocaleCookie,
  parseSeoHead,
  emulateDomain,
  trackResponses,
  pollUntil,
  acceptLanguageHeaders,
} from 'untestutils/utils'

Cookies / headers

await setLocaleCookie(page, baseURL!, 'de')
await clearCookies(page)
await page.setExtraHTTPHeaders(acceptLanguageHeaders('de-DE,de;q=0.9'))
await setAcceptLanguage(page, 'de')

SEO

const head = parseSeoHead(await (await request.get('/en')).text())
// head.canonical, head.ogUrl, head.hreflangs
await readSeoHead(page)
extractSitemapLocs(xml)
extractJsonLd(html)

Browser / redirects

await emulateDomain(page, 'https://en.example.com', baseURL!)
const { findByPath, stop } = trackResponses(page)
await goto('/')
expect(findByPath('/')?.status).toBe(302)
stop()

Poll

await pollUntil(async () => (await fetch(url)).ok)
await waitForUrlOk(url)

Next

• Vitest
• Why — utils are not a second philosophy