adding test for add action
adding test for add action

dakota/crud,bcrowe/crud,bravo-kernel/crud,FriendsOfCake/crud,simkimsia/crud,johanmeiring/crud,pwerken/cakephp-crud,FriendsOfCake/crud-json-api,ankr/crud,Spriz/crud,deizel/crud,ojengwa/crud,davidyell/crud