tombusby

# Generator for valid Swedish personnummer: http://en.wikipedia.org/wiki/Personal_identity_number_(Sweden)
# By Henrik Nyh <http://henrik.nyh.se> 2009-01-29 under the MIT license.

require 'date'

module Personnummer

  def self.generate(date=nil, serial=nil)
    date ||= Date.new(1900+rand(100), 1+rand(12), 1+rand(28))
    serial = serial ? serial.to_s : format("%03d", 1+rand(999))  # 001-999