You can use RubyMine for editing but still run tests in terminal. With this tip you can click path in terminal and open that file in RubyMine.
Open iTerm preferences -> Profiles -> Advanced -> Semantic History
Select Run command and paste
/Applications/RubyMine.app/Contents/MacOS/rubymine \5 --line \2 \1
So now when you see some paths in your terminal use Cmd+Left click to open it in RubyMine.
rspec ./spec/models/profile_spec.rb:37 rspec ./spec/models/channel_spec.rb:13 rspec ./spec/models/stat_spec.rb:78