gistfile1.rb

def self.should_delegate(*options)
  klass     = self.name.gsub(/Test$/, '').constantize
  receiver  = options.pop[:to]

  context "#{klass}" do
    setup do
      klass.any_instance.stubs(receiver).returns(receiver_stub = stub)
      options.each { |opt| receiver_stub.expects(opt) }
    end

    should "delegate methods to receiving object" do
      instance = get_instance_of(klass)
      options.each { |opt| instance.send(receiver).send(opt) }
    end
  end
end