What's difference between UI level testing and API level testing?
问题 I got this question while interviewing some companies. I don't think I answer the question well. However, based on my understanding: The UI level testing is more about the what end user will see and would be better to use for acceptance testing. The API level test is good for performance testing, since it's easier to simulate multiple users to access the resource at the same time. And, it's easier to look at where the problem will be. Can anyone give me more detail about that? And when should