1require 'spec_helper'
 2
 3class Kid
 4  attr_accessor :iq
 5  
 6  def initialize(iq)
 7    @iq = iq
 8  end
 9end
10
11class School
12  def educate(who)
13    who.iq *= 2
14  end
15end
16
17describe "object references" do
18  it "passes by reference" do
19    kid = Kid.new(50)
20    school = School.new
21    
22    school.educate(kid)
23    kid.iq.should == 100
24  end
25end