fix(medusa): Creating tax lines in cart completion strategy (#2761)

.changeset/happy-houses-walk.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/medusa": patch
+---
+
+fix: cart completion strategy tax lines management

packages/medusa/src/strategies/__tests__/cart-completion.js

@@ -7,25 +7,22 @@ const IdempotencyKeyServiceMock = {
     return this
   },
   workStage: jest.fn().mockImplementation(async (key, fn) => {
-    try {
-      const { recovery_point, response_code, response_body } = await fn(
-        MockManager
-      )
+    const { recovery_point, response_code, response_body } = await fn(
+      MockManager
+    )
 
-      if (recovery_point) {
-        return {
-          idempotency_key: key,
-          recovery_point,
-        }
-      } else {
-        return {
-          recovery_point: "finished",
-          response_body,
-          response_code,
-        }
-      }
-    } catch (err) {
-      return { error: err }
+    const data = {
+      recovery_point: recovery_point ?? "finished",
+    }
+
+    if (!recovery_point) {
+      data.response_body = response_body
+      data.response_code = response_code
+    }
+
+    return {
+      ...data,
+      idempotency_key: key,
     }
   }),
   update: jest.fn().mockImplementation((key, data) => {
@@ -39,7 +36,7 @@ const toTest = [
     {
       cart: {
         id: "test-cart",
-        items: [],
+        items: [{ id: "item", tax_lines: [] }],
         payment: { data: "some-data" },
         payment_session: { status: "authorized" },
         total: 1000,
@@ -57,7 +54,7 @@ const toTest = [
           type: "order",
         })
 
-        expect(cartServiceMock.createTaxLines).toHaveBeenCalledTimes(1)
+        expect(cartServiceMock.createTaxLines).toHaveBeenCalledTimes(3)
         expect(cartServiceMock.createTaxLines).toHaveBeenCalledWith(
           expect.objectContaining({ id: "test-cart" })
         )
@@ -94,7 +91,7 @@ const toTest = [
     {
       cart: {
         id: "test-cart",
-        items: [],
+        items: [{ id: "item", tax_lines: [] }],
         completed_at: "2021-01-02",
         payment: { data: "some-data" },
         payment_session: { status: "authorized" },
@@ -121,7 +118,7 @@ const toTest = [
     {
       cart: {
         id: "test-cart",
-        items: [],
+        items: [{ id: "item", tax_lines: [] }],
         payment: { data: "some-data" },
         payment_session: { status: "requires_more" },
         total: 1000,
@@ -148,7 +145,7 @@ const toTest = [
       cart: {
         id: "test-cart",
         type: "swap",
-        items: [],
+        items: [{ id: "item", tax_lines: [] }],
         payment: { data: "some-data" },
         payment_session: { status: "authorized" },
         total: 1000,
@@ -185,7 +182,12 @@ describe("CartCompletionStrategy", () => {
           withTransaction: function () {
             return this
           },
-          createTaxLines: jest.fn(() => Promise.resolve(cart)),
+          createTaxLines: jest.fn(() => {
+            cart.items[0].tax_lines = [{
+              id: "tax_lines"
+            }]
+            return Promise.resolve(cart)
+          }),
           deleteTaxLines: jest.fn(() => Promise.resolve(cart)),
           authorizePayment: jest.fn(() => Promise.resolve(cart)),
           retrieve: jest.fn(() => Promise.resolve(cart)),

packages/medusa/src/strategies/cart-completion.ts

@@ -66,7 +66,8 @@ class CartCompletionStrategy extends AbstractCartCompletionStrategy {
                 .withTransaction(transactionManager)
                 .workStage(
                   idempotencyKey.idempotency_key,
-                  async (manager) => await this.handleStarted(id, { manager })
+                  async (manager) =>
+                    await this.handleCreateTaxLines(id, { manager })
                 )
             })
             .catch((e) => {
@@ -156,7 +157,7 @@ class CartCompletionStrategy extends AbstractCartCompletionStrategy {
     }
   }
 
-  protected async handleStarted(
+  protected async handleCreateTaxLines(
     id: string,
     { manager }: { manager: EntityManager }
   ) {
@@ -198,6 +199,11 @@ class CartCompletionStrategy extends AbstractCartCompletionStrategy {
     idempotencyKey: IdempotencyKey,
     { context, manager }: { context: any; manager: EntityManager }
   ) {
+    const res = await this.handleCreateTaxLines(id, { manager })
+    if (res.response_code) {
+      return res
+    }
+
     const cart = await this.cartService_
       .withTransaction(manager)
       .authorizePayment(id, {
@@ -233,6 +239,11 @@ class CartCompletionStrategy extends AbstractCartCompletionStrategy {
     id: string,
     { manager }: { manager: EntityManager }
   ) {
+    const res = await this.handleCreateTaxLines(id, { manager })
+    if (res.response_code) {
+      return res
+    }
+
     const orderServiceTx = this.orderService_.withTransaction(manager)
 
     const cart = await this.cartService_