How to do visual regression testing using Playwright
AI Summary
The video demonstrates how to perform visual regression testing using Playwright with just a few lines of JavaScript. It shows writing a test case that navigates to a web page, takes a screenshot, and asserts it against a stored snapshot image. Initially, the test fails because no snapshot exists, so the snapshot is created via an update command. The video then shows how modifying the page visually causes the test to fail, indicating a visual regression. Playwright provides an image showing the exact pixels that changed, illustrating the practical use of visual regression testing.