[house9-2]

Large ruby on rails application. Entire test suite takes around 40 minutes to run, however we use circleCI and parallelize the build so realtime is around 10 minutes.

What makes the build so slow is that the database is involved, if you want fast builds decouple your unit tests from the database. With rails including the database access in tests makes everything easier and you get closer to real-life execution but slow ...