How to do proper database testing (TDD) on Rails 3 using MongoDB and Mongoid

Question

How would go about writing proper unit testing (and integration testing for that matter) using MongoDB through Mongoid on Rails ?

I am asking, because to the opposite of

Answer 1

There's no way to make MongoDB non-persistent. You simply have to delete data before or after each test. There's some documentation on that here:

http://www.mongodb.org/display/DOCS/Rails+-+Getting+Started#Rails-GettingStarted-Testing