Yes
Asking Claude to find weak tests has helped a lot in getting here
flossly on Hacker News
45kLOC prod code
In the thread “Learnings from 100K lines of Rust with AI (2025)”, replying to this comment
Helped: CLAUDE.md test rules and asking AI to find weak tests.
… A fair share of my CLAUDE.md instructs in how I like my tests, when to write them (first), different types of tests (unit, faked-services, db, e2e, etc.) Asking Claude to find weak tests has helped a lot in getting here. I also do review AI-gen'd code, pretty much line-by-line, before accepting it.