Rubygame should crash not keep going!

keeprunning.rb

require"rubygems"
require"rubygame"
include Rubygame
class LoopThrough
  include Rubygame::EventHandler::HasEventHandler
  def initialize
    @screen = Screen.new([800,600],0,[Rubygame::HWSURFACE,Rubygame::DOUBLEBUF])
    @q = Rubygame::EventQueue.new()
    @q.enable_new_style_events()
  end
  def quit
    exit
  end
  def queue_through
    @q.each do |ev|
      handle(ev)
    end
  end
  def mode
    hook_move()
    hook_quit()
    catch(:quit) do
      loop do
       queue_through()
     end
    end
    exit
  end
  def left
    puts"success"
    let_fail()
  end
  def hook_move
    move = {
	     :left => :left
    }
    make_magic_hooks(move)
  end
  def hook_quit
    quit = {
	     :escape => :quit 
    }
    make_magic_hooks(quit)
  end
end
test = LoopThrough.new()
test.mode()