Tests are not a panacea. They don't care about anything other than what you test. If you don't have code testing maintainability and readability, only that it "works", you end up like the product in that post.
Ultimate example: Biology (and everything related, like physiology, anatomy), where the test is similarly limited to "does it produce children that can survive". It is a huuuuuge mess, and trying to change any one thing always messes up things elsewhere in unexpected and hard or impossible to solve ways. It's genius, it works, it sells - and trying to deliberately change anything is a huge PITA because everything is interconnected and there is no clean design anywhere. You manage to change some single gene to change some very minor behavior, suddenly the ear shape changes and fur color and eye sight and digestion and disease resistance, stuff like that.
I wonder if for a large class of jobs, simple unit tests will be enough to be a negative that the llm output will try to match. Test driven delegation in a way.. that said i share the same worries as you. The fact that the LLM can wire multiple files / class / libs in a few seconds to pass your tests doesn't guarantee a good design. And the people who love vibe coding the most are the one who never valued design in the first place, just quick results..
(Sorry, but you set yourself up for this one, my apologies.)
Oh, so this post describes "worthy code", okay then.
https://news.ycombinator.com/item?id=18442941
Tests are not a panacea. They don't care about anything other than what you test. If you don't have code testing maintainability and readability, only that it "works", you end up like the product in that post.
Ultimate example: Biology (and everything related, like physiology, anatomy), where the test is similarly limited to "does it produce children that can survive". It is a huuuuuge mess, and trying to change any one thing always messes up things elsewhere in unexpected and hard or impossible to solve ways. It's genius, it works, it sells - and trying to deliberately change anything is a huge PITA because everything is interconnected and there is no clean design anywhere. You manage to change some single gene to change some very minor behavior, suddenly the ear shape changes and fur color and eye sight and digestion and disease resistance, stuff like that.