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YesClaude Code · 7 Feb 2026

I spent a single day prompting Claude code on Friday, and walked away with about 9000 lines of code, containing 300 unit tests for jmap servers

josephg on Hacker News

9000 lines of code, containing 300 unit tests

In the thread “The AI boom is causing shortages everywhere else”, replying to this comment

Helped: Generating a large test suite and web interface in one day.

Got in the way: Some tests are slightly wrong due to spec ambiguities.

… I’ve been wanting a standard test suite for JMAP email servers, so we can make sure all created jmap servers implement the (somewhat complex) spec in a consistent manner. I spent a single day prompting Claude code on Friday, and walked away with about 9000 lines of code, containing 300 unit tests for jmap servers. And a web interface showing the results. …