https://github.com/nemilya/rspec-datamapper-example http://devblog.avdi.org/2009/10/27/nulldb-for-datamapper/ http://stackoverflow.com/questions/10504505/testing-datamapper-models-with-rspec http://www.dinduks.com/sinatra-rspec-and-datamapper-configuring-and-using-a-database-for-tests/