Add external billing id on enterprises

spec/serializers/api/admin/enterprise_serializer_spec.rb

@@ -73,13 +73,4 @@
       end
     end
   end
-
-  context "when there is a external billing id" do
-    let(:enterprise) { create(:distributor_enterprise, external_billing_id: 'INV123456') }
-
-    it "includes URLs of image versions" do
-      serializer = Api::Admin::EnterpriseSerializer.new(enterprise)
-      expect(serializer.as_json[:external_billing_id]).to eq('INV123456')
-    end
-  end
 end

spec/system/admin/reports/revenues_by_hub_spec.rb

@@ -37,9 +37,9 @@
       tax_rate_name: "Tax 1"
     )
   end
-  let(:distributor1) { create(:enterprise, name: "Hub 1", owner:) }
+  let(:distributor1) { create(:enterprise, name: "Hub 1", owner:, external_billing_id: 'INV1234') }
   let(:distributor2) { create(:enterprise, name: "Hub 2", owner:) }
-  let(:distributor3) { create(:enterprise, name: "Hub 3", owner:) }
+  let(:distributor3) { create(:enterprise, name: "Hub 3", owner:, external_billing_id: 'INV4321') }
   let(:owner) { create(:user, email: '[email protected]') }
   let(:order_cycle) { create(:simple_order_cycle) }
   let(:product) { create(:product) }
@@ -87,7 +87,7 @@
         "Hub 1",
         order.distributor.id,
         "none",
-        "none",
+        "INV1234",
         "none",
         "none",
         "none",
@@ -131,7 +131,7 @@
         "Hub 3",
         order_with_voucher_tax_excluded.distributor.id,
         "none",
-        "none",
+        "INV4321",
         "none",
         "none",
         "none",