One question with EventMachine

Question

 require 'eventmachine'

  module EchoServer
    def post_init
      puts "-- someone connected to the echo server!"
    end

    def receive_data data
      send_data ">>>you sent: #{data}"
      close_connection if data =~ /quit/i
    end

    def unbind
      puts "-- someone disconnected from the echo server!"
    end
  end

  class Test
    attr_reader :some_value
    def start
      EventMachine::run {
      EventMachine::start_server "127.0.0.1", 8081, EchoServer
      }
    end
  end

My question is how to get some_value in EchoServer module? and what's the relation between class Test and module EchoServer ?