nostr:npub16pdljvqw3ld0f2mz8mq39tgcvhy3paqmc96kukn9cfscqa29u4wshq3nda " I really wish that Rust would just auto-discover tests wherever you happen to put them"

You can annotate any function with #[test] and Rust will run it as a test. It doesn't have to be in a test module.