nerds.airbnb.com
Testing at Airbnb
We went from a handful of brittle tests to a large, resilient suite. We’ve gutted our continuous integration stack and reduced our build times from 1 hour to about 6 minutes, while simultaneously handling many times the number of builds. Most importantly, we’ve gone from an engineering culture in which most new code shipped without a single test, to one in which a proposed change without tests will quickly be called out and corrected. In short, we’ve not only become a team that believes in tests; we’ve become one that actually writes them.