We don't have any doc directly for this, but Playwright tests everything in the browser, so you would use Playwrights test method that returns a page method for selection you can use.
https://playwright.dev/docs/api/class-test
I don't have anything on hand to demo, but interaction with map and other widgets/components should be same as other HTML elements. I think trickiest part would be trying "click" on a feature to show popup, that I'm not sure on. But you can use page selectors to click buttons and other bits and test for UI state.
Is there a particular error or workflow you are getting blocked at with it?
