add test users on the fly with unique login

new_test_user.rb

  def new_test_user(args={})
    i = rand(9999)
    random_string = (Time.now.strftime("%s").to_i-i)
    final_params = {:password => "testp", 
                  :login => random_string, 
                  :password_confirmation => "testp",
                  :email => "#{random_string}@gmg-entertainment.com"}.merge!(args)
    User.create!(final_params)
  end