class CartItem
  extend Forwardable
  def_delegators :@item, :attribute1, :attribute2, :attribute3, :attribute4, :attribute5, :in_stock?, :list_price, :product, :string_id
  attr_accessor :quantity
  
  def initialize(item)
    @item = item
    @quantity = 1
  end
  
  def increment_quantity
    @quantity += 1
  end
  
  def total
    list_price * quantity
  end
end