order

order.rb

class Order
   attr_accessor :id, :client,  :products, :total, :status

   def pay!(adapter)
       response = adapter.pay(self)
       status = response
   end
   
   def paid?
      status == :paid
   end
end

order_spec.rb

describe Order do
   context "A valid order" do
        let(:order){ Order.new(...) }
        let(:adapter){ double("An Adapter") }
        describe "A successfull transaction" do
           before do
	    adapter.should_receive(:pay).and_return(:paid)
	end
	it "should be a paid order" do
	  order.pay!(adapter)
	  order.paid?.should be_true
	end
        end
     describe "An unsuccessfull transaction" do
	before do
	  adapter.should_receive(:pay).and_return(:rejected)
	end
	it "should not be a paid order" do
	  order.paid?.should be_false
	end
     end
   end
end