https://www.saturnci.com/blog.html The latest posts from the SaturnCI blog. https://www.saturnci.com/my-agent-skill-for-test-driven-development.html AI agents tend to be, at least as of this writing (May 2026), lousy at writing tests. The tests they write are often vague, cryptic, overcomplicated, hacky, dis... Fri, 22 May 2026 00:00:00 -0000 https://www.saturnci.com/speculative-code.html Tests are executable specifications; they specify what your application is supposed to do. The tests, not the application code, are the authoritative source of ... Wed, 15 Apr 2026 00:00:00 -0000 https://www.saturnci.com/testing-anti-pattern-distracting-setup-data.html Every month I walk to the end of my driveway and stuff my mailbox with a tall stack of letters. Actually, I have to repeat this process a few times, because sta... Thu, 02 Apr 2026 00:00:00 -0000 https://www.saturnci.com/improving-on-sandi-metz-s-gear-class.html Chapter 2 of Sandi Metz's Practical Object-Oriented Design: An Agile Primer Using Ruby (POODR), "Designing Classes with a Single Responsibility", opens by givin... Mon, 30 Mar 2026 00:00:00 -0000 https://www.saturnci.com/how-i-built-real-time-log-streaming-in-saturnci.html SaturnCI is a continuous integration (CI) platform I built. It's roughly analogous to products like CircleCI or GitHub Actions. To summarize in a sentence what ... Sat, 14 Mar 2026 00:00:00 -0000 https://www.saturnci.com/rspec-shared-examples.html Better Specs is a popular source of guidance for writing RSpec tests. Unfortunately, much of the advice there is dubious, and some of it is downright bad. One o... Wed, 15 Oct 2025 00:00:00 -0000 https://www.saturnci.com/what-is-docker.html Today is your first day at your new job at the hottest startup in your town, DumpsterRental.ninja. Your boss, Scott, has given you your first assignment which i... Sat, 11 Oct 2025 00:00:00 -0000