What’s the deal with Playwright’s web-first assertions?
AI Summary
This video explains how to use Playwright’s web-first assertions to test dynamic UI state changes efficiently. The example demonstrates writing a test for a button that changes its state when clicked, eventually fading out and disappearing. Playwright’s expect library is used to assert various states of the button such as having specific text, being disabled, and being hidden. The key feature highlighted is that Playwright’s assertions automatically wait and retry until the expected condition becomes true, eliminating the need for manual waiting or delays in the test code. This approach simplifies testing asynchronous UI changes and ensures tests only proceed when the UI is in the expected state.