スペルに気をつけろ

ititialise と書いてエラーがでてえらい手間くった

class Cart
	attr_reader :items
	attr_reader :total_price
	def initialize
		@items = []
		@total_price = 0.0
	end
	def empty!
		@items = []
		@total_price = 0.0
	end
	def add_product(product)
		item =@items.find {|i| i.product_id == product.id}
		if item 
			item.quantity += 1
		else
			item = LineItem.for_product(product)
			@items << item
		end	
		@total_price += product.price
	end
end