Rakefile

require "bundler/gem_tasks"
require 'rspec/core'
require "rspec/core/rake_task"

RSpec::Core::RakeTask.new(:spec)

task :default => :spec

describe 'Run Vinterior Test'
task :run do

  project_root = File.dirname(File.absolute_path(__FILE__))
  Dir.glob(project_root + '/lib/*') { |file| require file }

  promo_rules = []
  promo_rules << PromoRule.discount_rule(60, 10)
  promo_rules << PromoRule.multi_discount_rule('001', 2, 8.50)

  item1 = Product.new('001', 'Very Cheap Chair', 9.25)
  item2 = Product.new('002', 'Little Table', 45.00)
  item3 = Product.new('003', 'Funky Light', 19.95)

  puts "scanning items 1,2,3"
  co = Checkout.new(promo_rules)
  co.scan(item1)
  co.scan(item2)
  co.scan(item3)

  puts "Cost: #{co.total}"

  puts "scanning items 1,3,1"
  co = Checkout.new(promo_rules)
  co.scan(item1)
  co.scan(item3)
  co.scan(item1)

  puts "Cost: #{co.total}"

  puts "scanning items 1,2,1,3"
  co = Checkout.new(promo_rules)
  co.scan(item1)
  co.scan(item2)
  co.scan(item1)
  co.scan(item3)

  puts "Cost: #{co.total}"

end