Add spec file for additional tax display. Add new trait for enterpris…

…e fee and calculator factory #11680

spec/factories.rb

@@ -94,6 +94,11 @@
       transient { amount { 1 } }
       calculator { build(:calculator_per_item, preferred_amount: amount) }
     end
+
+    trait :flat_percent_per_item do
+      transient { amount { 1 } }
+      calculator { build(:calculator_flat_percent_per_item, preferred_flat_percent: amount) }
+    end
   end
 
   factory :adjustment_metadata, class: AdjustmentMetadata do

spec/factories/calculator_factory.rb

@@ -14,6 +14,10 @@
     preferred_amount { generate(:calculator_amount) }
   end
 
+  factory :calculator_flat_percent_per_item, class: Calculator::FlatPercentPerItem do
+    preferred_flat_percent { generate(:calculator_amount) }
+  end
+
   factory :weight_calculator, class: Calculator::Weight do
     after(:build) { |c|
       c.set_preference(:per_unit, 0.5)

spec/helpers/admin/orders_helper_spec.rb

@@ -55,5 +55,56 @@
         expect(fake_adjustment.amount).to eq(-0.5)
       end
     end
+
+    context "with additional tax total" do
+      let!(:shipping_method){ create(:free_shipping_method) }
+      let!(:enterprise){
+        create(:distributor_enterprise_with_tax, name: 'Enterprise', charges_sales_tax: true,
+                                                 shipping_methods: [shipping_method])
+      }
+      let!(:country_zone){ create(:zone_with_member) }
+      let!(:tax_category){ create(:tax_category, name: 'tax_category') }
+      let!(:tax_rate){
+        create(:tax_rate, zone: country_zone, tax_category:, name: 'Tax Rate', amount: 0.13,
+                          included_in_price: false)
+      }
+      let!(:ship_address){ create(:ship_address) }
+      let!(:product) {
+        create(:simple_product, supplier: enterprise, price: 10, tax_category_id: tax_category.id)
+      }
+      let!(:variant){
+        create(:variant, :with_order_cycle, product:, distributor: enterprise, order_cycle:,
+                                            tax_category:)
+      }
+      let!(:coordinator_fees){
+        create(:enterprise_fee, :flat_percent_per_item, enterprise:, amount: 20,
+                                                        name: 'Adminstration',
+                                                        fee_type: 'sales',
+                                                        tax_category:)
+      }
+      let!(:order_cycle){
+        create(:simple_order_cycle, name: "oc1", suppliers: [enterprise],
+                                    distributors: [enterprise],
+                                    coordinator_fees: [coordinator_fees])
+      }
+      let!(:order){
+        create(:order_with_distributor, distributor: enterprise, order_cycle:, ship_address:)
+      }
+      let!(:line_item) { create(:line_item, variant:, quantity: 1, price: 10, order:) }
+
+      before do
+        order_cycle.variants << [product.variants.first]
+        order_cycle.exchanges.outgoing.first.variants << product.variants.first
+
+        order.recreate_all_fees!
+        Orders::WorkflowService.new(order).complete!
+      end
+
+      it "includes tax for product and order" do
+        adjustment = order_adjustments_for_display(order).first
+        expect(adjustment.label).to eq("Tax Category")
+        expect(adjustment.amount).to eq(0.26)
+      end
+    end
   end
 end