Generate a sequence of fictitious US street addresses for FactoryGirl

address_sequence.rb

FactoryGirl.define do

  # generate a sequence of fake US street addresses, such as:
  #   1001 Birch Boulevard, Clinton AK 52574, USA
  sequence :address do |n|
    # NB: the length of street_name, street_type, city, state arrays
    # are all chosen to be relatively prime to generate maximal
    # length sequences
    street_number = 1000 + n
    street_name = %w(Aspen Birch Cedar Dogwood Elm Ginkgo Hickory Ironwood 
      Juniper Linden Maple Oak Palm Quince Redwood Spruce Tulip Willow)[n % 18]
    street_type = %w(Avenue Boulevard Drive Place Road Street Way)[n % 7]
    city = %w(Franklin Clinton Springfield Greenville Salem Fairview
      Madison Washington Georgetown Arlington Ashland Burlington
      Manchester Marion Oxford Clayton Jackson Milton Auburn Dayton
      Lexington Milford Riverside Cleveland Dover Hudson Kingston Mount\ Vernon 
      Newport Oakland)[n %31]
    state = %w(AL AK AZ AR CA CO CT DE DC FL GA HI ID IL IN IA KS KY LA
      ME MD MA MI MN MS MO MT NE NV NH NJ NM NY NC ND OH OK OR PW PA RI SC
      SD TN TX UT VI VT VA WA WV WI WY)[n % 53]
    zip = sprintf("%05d", (1073676287 * (n + 1)) % 100000)
    "#{street_number} #{street_name} #{street_type}, #{city} #{state} #{zip}, USA"
  end
  
end