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module M
  class AuthenticationSystemError < StandardError
  end

  class NotAuthorizedError < AuthenticationSystemError
  end

  def self.included(base)
    base.class_eval do
      rescue_from M::NotAuthorizedError, :with => :not_authorized
    end
  end

  def not_authorized(exception)
    render :text => 'handler was called'
  end
end

class ApplicationController < ActionController::Base
  include M
end

class TesterController < ApplicationController
  def index
    raise M::NotAuthorizedError
  end
end