# File lib/action_controller/test_case.rb, line 371
        def tests(controller_class)
          case controller_class
          when String, Symbol
            self.controller_class = "#{controller_class.to_s.underscore}_controller".camelize.constantize
          when Class
            self.controller_class = controller_class
          else
            raise ArgumentError, "controller class must be a String, Symbol, or Class"
          end
        end