Factory girl bug

associations.rb

 #stubs :unit association and returns Array
   before( :each ) do
    @store = create :store
    4.times { create :unit, :unit_ownership => @store }
   end

 #creates necessary relationship between store and units
   before( :each ) do
     @store = create :store
     unit1, unit2, unit3, unit4 = create(:unit), create(:unit), create(:unit), build(:unit)
   end