chore(core-flows): apply taxes to items and shipping on RMA flows (#8858)

** What
Apply taxes to order line items and shipping methods

integration-tests/http/__tests__/claims/claims.spec.ts

@@ -11,6 +11,7 @@ import {
   adminHeaders,
   createAdminUser,
 } from "../../../helpers/create-admin-user"
+import { setupTaxStructure } from "../../../modules/__tests__/fixtures"
 
 jest.setTimeout(30000)
 
@@ -399,6 +400,8 @@ medusaIntegrationTestRunner({
       ).data.shipping_option
 
       item = order.items[0]
+
+      await setupTaxStructure(container.resolve(ModuleRegistrationName.TAX))
     })
 
     describe("Claims lifecycle", () => {
@@ -698,7 +701,7 @@ medusaIntegrationTestRunner({
           expect(paymentCollections[0]).toEqual(
             expect.objectContaining({
               status: "not_paid",
-              amount: 110.5,
+              amount: 109.5,
               currency_code: "usd",
             })
           )
@@ -742,7 +745,7 @@ medusaIntegrationTestRunner({
         })
 
         it("should create a payment collection successfully & mark as paid", async () => {
-          const paymentDelta = 110.5
+          const paymentDelta = 109.5
           const orderForPayment = (
             await api.get(`/admin/orders/${order.id}`, adminHeaders)
           ).data.order
@@ -1100,9 +1103,9 @@ medusaIntegrationTestRunner({
 
           expect(orderCheck.summary).toEqual(
             expect.objectContaining({
-              pending_difference: -10,
-              current_order_total: 51,
-              original_order_total: 61,
+              pending_difference: -11,
+              current_order_total: 50,
+              original_order_total: 60,
               temporary_difference: 15,
             })
           )

integration-tests/http/__tests__/exchanges/exchanges.spec.ts

@@ -9,6 +9,7 @@ import {
   adminHeaders,
   createAdminUser,
 } from "../../../helpers/create-admin-user"
+import { setupTaxStructure } from "../../../modules/__tests__/fixtures/tax"
 
 jest.setTimeout(30000)
 
@@ -379,6 +380,8 @@ medusaIntegrationTestRunner({
         },
         adminHeaders
       )
+
+      await setupTaxStructure(container.resolve(ModuleRegistrationName.TAX))
     })
 
     describe("Exchanges lifecycle", () => {
@@ -435,7 +438,7 @@ medusaIntegrationTestRunner({
         expect(response.data).toEqual({
           type: "invalid_data",
           message:
-            "Order exchange request should have atleast 1 item inbound and 1 item outbound",
+            "Order exchange request should have at least 1 item inbound and 1 item outbound",
         })
 
         await api.post(

integration-tests/http/__tests__/order-edits/order-edits.spec.ts

@@ -16,6 +16,7 @@ jest.setTimeout(30000)
 medusaIntegrationTestRunner({
   testSuite: ({ dbConnection, getContainer, api }) => {
     let order
+    let taxLine
     let shippingOption
     let shippingProfile
     let fulfillmentSet
@@ -51,6 +52,30 @@ medusaIntegrationTestRunner({
         )
       ).data.customer
 
+      const taxRegion = (
+        await api.post(
+          "/admin/tax-regions",
+          {
+            country_code: "US",
+          },
+          adminHeaders
+        )
+      ).data.tax_region
+
+      taxLine = (
+        await api.post(
+          "/admin/tax-rates",
+          {
+            rate: 10,
+            code: "standard",
+            name: "Taxation is theft",
+            is_default: true,
+            tax_region_id: taxRegion.id,
+          },
+          adminHeaders
+        )
+      ).data.tax_rate
+
       const salesChannel = (
         await api.post(
           "/admin/sales-channels",
@@ -384,6 +409,12 @@ medusaIntegrationTestRunner({
         expect(result.summary.original_order_total).toEqual(60)
         expect(result.items.length).toEqual(2)
 
+        const newItem = result.items.find(
+          (i) => i.variant_id === productExtra.variants[0].id
+        )
+        expect(newItem.tax_lines[0].tax_rate_id).toEqual(taxLine.id)
+        expect(newItem.tax_lines[0].rate).toEqual(10)
+
         result = (
           await api.post(
             `/admin/order-edits/${orderId}/confirm`,
@@ -395,7 +426,7 @@ medusaIntegrationTestRunner({
         result = (await api.get(`/admin/orders/${orderId}`, adminHeaders)).data
           .order
 
-        expect(result.total).toEqual(34)
+        expect(result.total).toEqual(36.4)
         expect(result.items.length).toEqual(1)
 
         result = (

integration-tests/modules/__tests__/order/draft-order.spec.ts

@@ -226,7 +226,7 @@ medusaIntegrationTestRunner({
           shipping_methods: [
             {
               name: "test-method",
-              option_id: "test-option",
+              shipping_option_id: "test-option",
               amount: 100,
             },
           ],
@@ -268,7 +268,13 @@ medusaIntegrationTestRunner({
                     value: "3000",
                   }),
                   metadata: {},
-                  tax_lines: [],
+                  tax_lines: [
+                    expect.objectContaining({
+                      code: "US_DEF",
+                      provider_id: "system",
+                      rate: 2,
+                    }),
+                  ],
                   adjustments: [],
                   unit_price: 3000,
                   quantity: 2,
@@ -360,9 +366,15 @@ medusaIntegrationTestRunner({
                     value: "100",
                   }),
                   is_tax_inclusive: false,
-                  shipping_option_id: null,
+                  shipping_option_id: "test-option",
                   data: null,
-                  tax_lines: [],
+                  tax_lines: [
+                    expect.objectContaining({
+                      code: "US_DEF",
+                      provider_id: "system",
+                      rate: 2,
+                    }),
+                  ],
                   adjustments: [],
                   amount: 100,
                 }),