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: test_faker_city.rb
    path of file: ./repos/faker/test/faker/default
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require_relative '../../test_helper'

class TestFakerCity < Test::Unit::TestCase
  def setup
    @old_lo
    
  def test_city_formats_are_flexible
    I18n.with_locale(:xy) do
      cities = ['big rocking town']
      city = Faker::Address.city

      assert_includes cities, city, "Expected <#{cities.join(' / ')}>, but got #{city}"
    end
  end