Assertion

What is Assertion?

An assertion is the point in a test where you declare what should be true—an element is visible, a URL matches, a value equals what you expect—and let the test fail loudly if reality disagrees. Assertions turn a script that merely clicks through a flow into a test that actually validates behavior. In Playwright, web-first assertions automatically wait and retry until the condition is met or a timeout expires, which removes a common source of flakiness. QI generates meaningful assertions from your recorded flow so exported specs verify outcomes, not just navigation.