Playwright · Middle · Question 26 of 75

When is `expect.poll` useful?

await expect.poll(async () => {
  const res = await request.get("/api/jobs/42");
  return (await res.json()).status;
}).toBe("done");

1To wait for a fixed delay before asserting
2To retry a non-locator value until it matches
3To check every value in an array of locators

Show the answer

Correct answer: To retry a non-locator value until it matches

Explanation

Web-first assertions retry locator checks. expect.poll retries any async function, e.g. waiting for a background job.

Further reading

Playwright: Assertions ↗

Test yourself

Take the Playwright · Middle quiz: questions and options are shuffled, and you get a review of your mistakes at the end.