https://evilmartians.com/chronicles/testprof-a-good-doctor-for-slow-ruby-tests

Writing tests is a significant part of the development process in Ruby community.

The test suite’s run time increases as our application evolves. We don’t care until we found ourselves wasting too much time waiting for the green light.

I’ve developed some useful techniques and tools to analyze tests performance and make them faster. Check out TestProf–the Ruby test profiling toolbox.