Make use of taxable order check

This just uses the taxable order check configuration added in the parent
commit to provide a hook to short circuit order tax checks.

2 files changed, 19 insertions, 0 deletions

diff --git a/lib/super_good/solidus_taxjar/tax_calculator.rb b/lib/super_good/solidus_taxjar/tax_calculator.rb
index 0ddd50f..c7d44a9 100644
--- a/lib/super_good/solidus_taxjar/tax_calculator.rb
+++ b/lib/super_good/solidus_taxjar/tax_calculator.rb
@@ -13,6 +13,7 @@ module SuperGood
       def calculate
         return no_tax if SuperGood::SolidusTaxJar.test_mode
         return no_tax if incomplete_address?(order.tax_address) || order.line_items.none?
+        return no_tax unless taxable_order? order
         return no_tax unless taxable_address? order.tax_address
 
         cache do
@@ -133,6 +134,10 @@ module SuperGood
         SuperGood::SolidusTaxJar.exception_handler
       end
 
+      def taxable_order?(order)
+        SuperGood::SolidusTaxJar.taxable_order_check.(order)
+      end
+
       def taxable_address?(address)
         SuperGood::SolidusTaxJar.taxable_address_check.(address)
       end
diff --git a/spec/super_good/solidus_taxjar/tax_calculator_spec.rb b/spec/super_good/solidus_taxjar/tax_calculator_spec.rb
index ee4fee0..c9ecbcd 100644
--- a/spec/super_good/solidus_taxjar/tax_calculator_spec.rb
+++ b/spec/super_good/solidus_taxjar/tax_calculator_spec.rb
@@ -243,6 +243,20 @@ RSpec.describe ::SuperGood::SolidusTaxJar::TaxCalculator do
           end
         end
 
+        context "but the taxable order check returns false" do
+          before do
+            allow(SuperGood::SolidusTaxJar.taxable_order_check)
+              .to receive(:call).with(order)
+              .and_return(false)
+          end
+
+          it "returns no taxes" do
+            expect(subject.order_id).to eq order.id
+            expect(subject.shipment_taxes).to be_empty
+            expect(subject.line_item_taxes).to be_empty
+          end
+        end
+
         context "when there are shipping taxes" do
           let(:shipping_tax_breakdown) do
             instance_double ::Taxjar::Shipping, tax_collectable: 10.00