# File lib/sinatra/async.rb, line 119
      def async_schedule(&b)
        if settings.environment == :test
          settings.set :async_schedules, [] unless settings.respond_to? :async_schedules
          settings.async_schedules << lambda { async_catch_execute(&b) }
        else
          native_async_schedule { async_catch_execute(&b) }
        end
      end