fix link + add test

integration-tests/plugins/__tests__/link-modules/cart-region.spec.ts

@@ -0,0 +1,99 @@
+import { ModuleRegistrationName } from "@medusajs/modules-sdk"
+import { ICartModuleService, IRegionModuleService } from "@medusajs/types"
+import path from "path"
+import { startBootstrapApp } from "../../../environment-helpers/bootstrap-app"
+import { getContainer } from "../../../environment-helpers/use-container"
+import { initDb, useDb } from "../../../environment-helpers/use-db"
+import adminSeeder from "../../../helpers/admin-seeder"
+
+jest.setTimeout(50000)
+
+const env = { MEDUSA_FF_MEDUSA_V2: true }
+
+describe("Link: Cart Region", () => {
+  let dbConnection
+  let appContainer
+  let shutdownServer
+  let cartModuleService: ICartModuleService
+  let regionModule: IRegionModuleService
+  let remoteQuery
+
+  beforeAll(async () => {
+    const cwd = path.resolve(path.join(__dirname, "..", ".."))
+    dbConnection = await initDb({ cwd, env } as any)
+    shutdownServer = await startBootstrapApp({ cwd, env })
+    appContainer = getContainer()
+    cartModuleService = appContainer.resolve(ModuleRegistrationName.CART)
+    regionModule = appContainer.resolve(ModuleRegistrationName.REGION)
+    remoteQuery = appContainer.resolve("remoteQuery")
+  })
+
+  afterAll(async () => {
+    const db = useDb()
+    await db.shutdown()
+    await shutdownServer()
+  })
+
+  beforeEach(async () => {
+    await adminSeeder(dbConnection)
+
+    // @ts-ignore
+    await regionModule.createDefaultCountriesAndCurrencies()
+  })
+
+  afterEach(async () => {
+    const db = useDb()
+    await db.teardown()
+  })
+
+  it("should query carts and regions with remote query", async () => {
+    const region = await regionModule.create({
+      name: "Region",
+      currency_code: "usd",
+    })
+
+    const cart = await cartModuleService.create({
+      email: "[email protected]",
+      currency_code: "usd",
+      region_id: region.id,
+    })
+
+    const carts = await remoteQuery({
+      cart: {
+        fields: ["id"],
+        region: {
+          fields: ["id"],
+        },
+      },
+    })
+
+    const regions = await remoteQuery({
+      region: {
+        fields: ["id"],
+        carts: {
+          fields: ["id"],
+        },
+      },
+    })
+
+    expect(carts).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          id: cart.id,
+          region: expect.objectContaining({ id: region.id }),
+        }),
+      ])
+    )
+
+    expect(regions).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          id: region.id,
+          carts: expect.arrayContaining([
+            expect.objectContaining({ id: cart.id }),
+          ]),
+        }),
+      ])
+    )
+  })
+})

packages/link-modules/src/definitions/cart-region.ts

@@ -18,8 +18,8 @@ export const CartRegion: ModuleJoinerConfig = {
       serviceName: Modules.REGION,
       relationship: {
         serviceName: Modules.CART,
-        primaryKey: "id",
-        foreignKey: "cart_id",
+        primaryKey: "region_id",
+        foreignKey: "id",
         alias: "carts",
         isList: true,
       },