#---
# Excerpted from "Agile Web Development with Rails, 2nd Ed."
# We make no guarantees that this code is fit for any purpose. 
# Visit http://www.pragmaticprogrammer.com/titles/rails2 for more book information.
#---
require File.dirname(__FILE__) + '/../test_helper'

class CartTest < Test::Unit::TestCase
  fixtures :products

  def setup
    @cart  = Cart.new
    @rails = products(:rails_book)
    @ruby  = products(:ruby_book)
  end
  
  def test_add_unique_products
    @cart.add_product @rails
    @cart.add_product @ruby
    assert_equal 2, @cart.items.size
    assert_equal @rails.price + @ruby.price, @cart.total_price
  end

  def test_add_duplicate_product
    @cart.add_product @rails
    @cart.add_product @rails
    assert_equal 2*@rails.price, @cart.total_price
    assert_equal 1, @cart.items.size
    assert_equal 2, @cart.items[0].quantity
  end 
end