Supports a simple DSL for specifying behaviour of ApplicationController. Creates an anonymous subclass of ApplicationController and evals the body in that context. Also sets up implicit routes for this controller, that are separate from those defined in config/routes.rb.

Examples

   describe ApplicationController do
     controller do
       def index
         raise ApplicationController::AccessDenied
       end
     end

     describe "handling AccessDenied exceptions" do
       it "redirects to the /401.html page" do
         get :index
         response.should redirect_to("/401.html")
       end
     end
   end

If you would like to spec a subclass of ApplicationController, call controller like so:

   controller(ApplicationControllerSubclass) do
     # ....
   end

NOTICE: Due to Ruby 1.8 scoping rules in anoymous subclasses, constants defined in ApplicationController must be fully qualified (e.g. ApplicationController::AccessDenied) in the block passed to the controller method. Any instance methods, filters, etc, that are defined in ApplicationController, however, are accessible from within the block.