I shutter thinking my boss could read that article because unit testing is already viewed as extra work that is unnecessary. It’s apparent that the author has

I shutter thinking my boss could read that article because unit testing is already viewed as extra work that is unnecessary. It’s apparent that the author has never worked on a legacy product. End-to-end testing works great until your project grows in complexity and something doesn’t work right. Then you play the game of looking for where and why while your boss is frustratingly asking you how long it’s going to take while telling all the other bosses that you’re incompetent. Worst case, you break something, and you don’t realize it, or your coworkers break something you wrote and they don’t realize it. Unit tests can protect you from those situations.