Repo of TheComments has dummy application for developmet and testing.
It's here: Dummy App
For run dummy app, your should do that:
git clone https://github.com/the-teacher/the_comments.git
cd the_comments/spec/dummy_app/
bundle
rake db:bootstrap_and_seed
rails s -p 3000 -b localhost
Following instructions should helps to run simple tests:
git clone https://github.com/the-teacher/the_comments.git
cd the_comments/spec/dummy_app/
bundle
rake db:bootstrap RAILS_ENV=test
rspec --format documentation