The basic idea is we do pair programming to practice TDD.
How to install gems
bundle
How to run test
bundle exec rspec feature_spec.rb
Features you can develop
Validate Topic#title and Post#content should be present Write a form object to wrap Topic and Post models
Reference
http://matthewrobertson.org/blog/2012/09/20/decoupling-rails-forms-from-the-database/ http://blog.codeclimate.com/blog/2012/10/17/7-ways-to-decompose-fat-activerecord-models/