Hurting Code for Fun and Profit
summary
A Rails social‑media project ties ActiveRecord to WebDAV and the test suite crawls — a planned 2–3 month job stretches past a year — so WebDAV is ripped out and tests are profiled and refactored. The full test run drops from about 74 seconds to 5 seconds for a large subset, roughly a 15–20× speedup, tests become reliable, people run them constantly, and development velocity improves dramatically.
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