mocking geocode in my rails3 project

mock_geo.rb

## /spec/support/mock_geo.rb
## MockGeo takes an address in the following format and can produce
## fake google geocode output
## All country and state information resolves to North Carolina, USA
## Include "gem jbuilder in :test and :development group" if not already in the project.
## Example
## Output for address string *MUST* be in this format
## a = '102 My Street, My Town, , NC, 99903' OR
#  a = '102 my street, my town, nc'
## b = MockGeo.new(:addr => a)
## c = b.create_mock
#
class MockGeo
  attr_accessor :address, :city, :street_number, :postal_code, :street_name
  def initialize(options = {})
    @address = options[:addr]
    street,@city,abbr_state,@postal_code = @address.split(',')
    if street
      street_array = street.split(/\s+/)
      if street_array && street_array.count > 1
        @street_number = street_array[0]
        street_array.shift
        @street_name = street_array.join(' ')
      end
    end
    if @postal_code.blank?
      @postal_code = '27711'
    end
    # strip strings
    @street_name.strip! if @street_name
    @street_number.strip! if @street_number
    @address.strip! if @address
    @postal_code.strip! if @postal_code
  end

  def create_mock
    Jbuilder.encode do |json|
      json.status 'OK'
      json.results do |json|
        json.child! do |json|
          json.types ['street_address']
          json.formatted_address self.address

          json.address_components do |json|
            json.child! do |json| 
              json.long_name self.street_number
              json.name self.street_number
              json.types  ['street_number'] 
            end
            json.child! do |json|
              json.long_name self.street_name
              json.short_name self.street_name
              json.types %w{route}
            end
            json.child! do |json|
              json.long_name self.city
              json.short_name self.city
              json.types %w{locality political}
            end
            json.child! do |json|
              json.long_name 'North Carolina'
              json.short_name 'North Carolina'
              json.types %w{administrative_area_level_2 political}
            end
            json.child! do |json|
              json.long_name 'North Carolina'
              json.short_name 'NC'
              json.types %w{administrative_area_level_1 political}
            end
            json.child! do |json|
              json.long_name 'United States'
              json.short_name 'US'
              json.types %w{country political}
            end
            json.child! do |json|
              json.long_name self.postal_code
              json.short_name self.postal_code
              json.types %w{postal_code}
            end
          end
          json.geometry do |json|
            json.location do |json|
              json.lat "40.7503#{Random.rand(999)}".to_f
              json.lng "-73.9996#{Random.rand(999)}".to_f
            end
            json.viewport do |json|
              json.southwest do |json|
                json.lat "40.7503#{Random.rand(999)}".to_f
                json.lng "-73.9996#{Random.rand(999)}".to_f
              end
              json.northeast do |json|
                json.lat "40.7503#{Random.rand(999)}".to_f
                json.lng "-73.9996#{Random.rand(999)}".to_f
              end
            end
            json.location_type 'ROOFTOP'
          end
        end
      end
    end
  end
end

mock_geocode.rb

# /spec/support/mock_geocode.rb
require Rails.root.join('spec', 'support', 'mock_geo')
module Geocoder
  module Lookup
    class Base
      private #-----------------------------------------------------------------
      def read_fixture(file)
        File.read(File.join("spec", "fixtures", file)).strip.gsub(/\n\s*/, "")
      end
    end

    class Google < Base
      private #-----------------------------------------------------------------
      def fetch_raw_data(query, reverse = false)
        raise TimeoutError if query == "timeout"
        raise SocketError if query == "socket_error"
        mock_geo = MockGeo.new(:addr => query)
        mock_geo.create_mock 
      end
    end
  end
end