TLDR is the best test runner for Claude Code | justin․searls․co

A couple years ago, Aaron and I had an idea for a satirical test runner that enforced fast feedback by giving up on running your tests after 1.8 seconds. It's called TLDR. I kept pulling on the thread until TLDR could stand as a viable non-satirical test runner and a legitimate Minitest alternative. Its 1.0 release sported a robust CLI, configurable (and disable-able) timeouts, and a compatibility mode that makes TLDR a drop-in replacement for Minitest in most projects. Anyway, as I got started working with Claude Code and learned about how hooks work, I realized that a test runner with a built-in concept of a timeout was suddenly a very appealing proposition. To make TLDR a great companion to agentic workflows, I put some work into a new release this weekend that allows you to do this:.