Factory.define(:variant) do |f|
  f.price 19.99
  f.sku    { Faker::Lorem.sentence }
  f.weight { BigDecimal.new("#{rand(200)}.#{rand(99)}") }
  f.height { BigDecimal.new("#{rand(200)}.#{rand(99)}") }
  f.width  { BigDecimal.new("#{rand(200)}.#{rand(99)}") }
  f.depth  { BigDecimal.new("#{rand(200)}.#{rand(99)}") }

  # associations: 
  f.association(:product, :factory => :product)
  f.option_values { [Factory(:option_value)] }
end