Autotest depends on the rules you use. Find autotest/discovery.rb for your project to see something like: Autotest.add_discovery { "Rspec2" } Autotest

Autotest depends on the rules you use. Find autotest/discovery.rb for your project to see something like: Autotest.add_discovery { "Rspec2" } Autotest.add_discovery { "Rails" } # both of the frameworks have their predefined rulesets No one prevents you from adding your own discovery rules. Also you're looking for autotest-fsevent if you're using a mac. Probably something similar exists for linux.