require "minitest/autorun"

require "./checkout.rb"

class TestCheckout < Minitest::Test
  def setup
    @checkout = Checkout.new
  end

  def test_that_unknown_items_cannot_be_added
    assert_raises Checkout::InvalidItem do
      @checkout.add(:foo)
    end
  end

  def test_that_allowed_items_are_added
    @checkout.add(:PI5)
    @checkout.add(:ZERO2W)

    assert_equal [:PI5, :ZERO2W].sort, @checkout.items.sort
  end
end