rdingus.rb

require 'rubygems'
require 'spec'

class Person
  attr_accessor :name
  attr_accessor :shoe_size

  def eat(sandwich)
    sandwich.cut_in_half
    sandwich.eaten = true
  end

end

class RDingus

  def initialize
    @list = []
  end

  def method_missing(name, *args)
    @list << "something"
  end

  def calls(name)
    @list
  end

  def calls?(name)
    true
  end
end

describe "A person" do
    describe "when specifying a shoe size" do

      it "should save the shoe size" do
        p = Person.new
        p.shoe_size = 4
        p.shoe_size.should == 4
      end

  end

  it "should be able to eat a sandwich" do
    sandwich = RDingus.new
    person = Person.new
    person.eat(sandwich)
    sandwich.calls?(:eaten=).should be_true
  end

end

describe "RDingus" do
  describe "when asserting calls" do
    before(:each) do
      @sandwich = RDingus.new
    end
    it "should return a list of methods called" do
      @sandwich.eaten = true
      @sandwich.calls(:eaten=).length.should == 1
    end

    it "should record multiple identical calls" do
      2.times do
        @sandwich.eaten = true
      end
      @sandwich.calls(:eaten=).length.should == 2
    end
  end
end