shipping_spec.rb

require 'spec_helper'
require 'carmen'

# Really more of a set of integration tests, we're proving that tax is actually
# calculated how we want on an order
describe ByZipTaxCalculator do
  let!(:taxable_category) { create(:tax_category, name: "Sales and Use Tax", is_default: true) }
  let!(:non_taxable_category) { create(:tax_category, name: "Non Taxable") }

  before do
    # load state seed data
    create(:country,
            iso_name: 'UNITED STATES',
            name:'United States',
            iso: 'US',
            iso3: 'USA',
            numcode: 840)

    # Crazy hack to work around weird way spree default states loader works,
    # to let us call it more than once. Would not be neccesary in solidus.
    TOPLEVEL_BINDING.eval('self').instance_variable_set("@states", nil)

    load Spree::Core::Engine.root + 'db/default/spree/states.rb'
  end

  let!(:calculator_seed_results) { ByZipTaxCalculator.create_seed_data! }
  let(:zone) { calculator_seed_results.first }
  let(:rate) { calculator_seed_results.second }
  let(:taxable_state) {  zone.zoneables.first }

  describe "taxable state shipping address" do
    let(:sales_tax_zipcode) { SalesTaxZipcode.create!(zipcode: '10000', combined_rate: 0.10.to_d, state: taxable_state.abbr) }
    let(:taxable_zipcode) { sales_tax_zipcode.zipcode }
    let(:zipcode_rate) { sales_tax_zipcode.combined_rate }

    let(:taxable_address) { create(:address, state: taxable_state, zipcode: taxable_zipcode) }

    describe "with shipping" do
      let(:order) do
        create(:order_with_line_items,
                ship_total: 100,
                ship_address: taxable_address
        ) do |order|
          shipping_methods = order.shipments.collect(&:shipping_method).uniq
          shipping_methods.each { |sm| sm.update(tax_category: taxable_category) }
          order.update_totals
        end
      end
      it "charges tax on shipping and item total" do
        expect(order.tax_total).to eq round_currency((order.item_total + order.ship_total) * zipcode_rate)
      end
    end
  end
end