Controlling Rails mass-assignment with whitelists and :as

Rails 3.2 has some flexible features for controlling mass-assignment. A little Gist I put together demonstrates:

 whitelisting and roles: https://gist.github.com/2948700

Objects in Practice - Testing Objects

Test Doubles in Ruby and Groovy: https://github.com/jtroxel/Objects-In-Practice/blob/master/test-objects/readme.md