accepts_nested_attributes_for + factoryGirl

gistfile1.txt

#antes:

Factory.define :bunch , :class  => Bunch do |f|
 f.ribbon_color_id 1
 f.production_unit_id 1
 f.release "2011-01-12 22:37:49"
 f.user_id 1
end
Factory.define :lot, :class => :Lot do |f|
  f.production_unit_id 1
  f.name "Lote 1"
end
Factory.define :bunch_lot, :class => BunchLot do |f|
  f.bunch_amount 10
  f.association :lot
  f.association :bunch
end

#Depois:
Factory.define :bunch , :class  => Bunch do |f|
 f.ribbon_color_id 1
 f.production_unit_id 1
 f.release "2011-01-12 22:37:49"
 f.user_id 1
 f.after_build { |f|
    f.bunch_lots << Factory.build(:bunch_lot)
 }
end
Factory.define :lot, :class => :Lot do |f|
  f.production_unit_id 1
  f.name "Lote 1"
end
Factory.define :bunch_lot, :class => BunchLot do |f|
  f.bunch_amount 10
  f.association :lot
end