I was able to learn in detail about everything from visual testing using Storybook and Chromatic to E2E testing. I think that if you listen to both parts 1 and 2 of the lecture, you will be able to master the basics of testing used in the front end. I use Jest, and I had a hard time setting it up, but it's not much different from vitest in terms of usage, so I think it would be good for those who use Jest to listen to it. I was so satisfied with this lecture that I bought the teachers' book (I haven't read it all yet😆😆) Thank you for the good lecture and please upload more lectures!🙇‍♂️