You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: rate_lookup_test.rb
    path of file: ./repos/workarea/core/test/models/workarea/shipping
    
    the code of the file until where you have to start completion: require 'test_helper'

module Workarea
  class Shipping
    class RateLookupTest < TestCase

      setup :set_shipping_services

      de
    
      def test_response
        response = RateLookup.new(address, address, packages).response
        first_rate = response.rates.first

        assert_equal(@shipping_services.first.name, first_rate.service_name)
        assert_equal(100, first_rate.price) # ActiveShipping works in cents
      end