user_factory.rb

FactoryGirl.define do
  factory :user do
    first_name          "Fox"
    last_name           "Mulder"
    sequence(:email) { |n| "fox#{n}@xfiles.com"}
    password            "XXXXX111111"

    factory :admin do |admin|
      admin.after_create { |admin| admin.roles << Factory(:admin_role) }
    end
  end
end