Challenge #3 is done — here's my solution to Challenge 3: Visual Testing with API Mocking I'm not a big fan of mock APIs for end-to-end tests, but when testing a dashboard with daily API changes, you need to ensure the charts are displayed correctly. One time, after some charts, one chart wasn't displayed. In another Google Maps integration, with some changes, one button overlaps another button, so I think visual testing is good for detecting those issues automatically. One approach is to moc...