In the previous lesson we covered how to find and make assertions against a single HTML element.

But those examples were when the element was already present on the page (no async or re-rendering behavior required before it appears).

In this lesson we will show how to query for elements that will appear.

(Basically: keep retrying for a few seconds until the query matches... or until it times out and the test assertion will fail).

This is similar to await screen.findBy...() functions in React Testing Library.