# in spec/factories/movie.rb
FactoryGirl.define do
  factory :movie do
    title 'A Fake Title' # default values
    rating 'PG'
    release_date { 10.years.ago }
  end
end
# in your specs
it 'should include rating and year' do
  movie = FactoryGirl.build(:movie, :title => 'Milk')
  # etc.
end