feat(cart): Shipping methods (#6101)

packages/cart/integration-tests/__tests__/services/cart-module/index.spec.ts

@@ -1,4 +1,5 @@
 import { ICartModuleService } from "@medusajs/types"
+import { CheckConstraintViolationException } from "@mikro-orm/core"
 import { initialize } from "../../../../src/initialize"
 import { DB_URL, MikroOrmWrapper } from "../../../utils"
 
@@ -466,12 +467,9 @@ describe("Cart Module Service", () => {
 
       expect(item.title).toBe("test")
 
-      const updatedItem = await service.updateLineItems(
-        item.id,
-        {
-          title: "test2",
-        }
-      )
+      const updatedItem = await service.updateLineItems(item.id, {
+        title: "test2",
+      })
 
       expect(updatedItem.title).toBe("test2")
     })
@@ -519,13 +517,13 @@ describe("Cart Module Service", () => {
           selector: { cart_id: createdCart.id },
           data: {
             title: "changed-test",
-          }
+          },
         },
         {
           selector: { id: itemTwo!.id },
           data: {
             title: "changed-other-test",
-          }
+          },
         },
       ])
 
@@ -603,4 +601,117 @@ describe("Cart Module Service", () => {
       expect(cart.items?.length).toBe(0)
     })
   })
+
+  describe("addShippingMethods", () => {
+    it("should add a shipping method to cart succesfully", async () => {
+      const [createdCart] = await service.create([
+        {
+          currency_code: "eur",
+        },
+      ])
+
+      const [method] = await service.addShippingMethods(createdCart.id, [
+        {
+          amount: 100,
+          name: "Test",
+        },
+      ])
+
+      const cart = await service.retrieve(createdCart.id, {
+        relations: ["shipping_methods"],
+      })
+
+      expect(method.id).toBe(cart.shipping_methods![0].id)
+    })
+
+    it("should throw when amount is negative", async () => {
+      const [createdCart] = await service.create([
+        {
+          currency_code: "eur",
+        },
+      ])
+
+      const error = await service
+        .addShippingMethods(createdCart.id, [
+          {
+            amount: -100,
+            name: "Test",
+          },
+        ])
+        .catch((e) => e)
+
+      expect(error.name).toBe(CheckConstraintViolationException.name)
+    })
+
+    it("should add multiple shipping methods to multiple carts succesfully", async () => {
+      let [eurCart] = await service.create([
+        {
+          currency_code: "eur",
+        },
+      ])
+
+      let [usdCart] = await service.create([
+        {
+          currency_code: "usd",
+        },
+      ])
+
+      const methods = await service.addShippingMethods([
+        {
+          cart_id: eurCart.id,
+          amount: 100,
+          name: "Test One",
+        },
+        {
+          cart_id: usdCart.id,
+          amount: 100,
+          name: "Test One",
+        },
+      ])
+
+      const carts = await service.list(
+        { id: [eurCart.id, usdCart.id] },
+        { relations: ["shipping_methods"] }
+      )
+
+      eurCart = carts.find((c) => c.currency_code === "eur")!
+      usdCart = carts.find((c) => c.currency_code === "usd")!
+
+      const eurMethods = methods.filter((m) => m.cart_id === eurCart.id)
+      const usdMethods = methods.filter((m) => m.cart_id === usdCart.id)
+
+      expect(eurCart.shipping_methods![0].id).toBe(eurMethods[0].id)
+      expect(usdCart.shipping_methods![0].id).toBe(usdMethods[0].id)
+
+      expect(eurCart.shipping_methods?.length).toBe(1)
+      expect(usdCart.shipping_methods?.length).toBe(1)
+    })
+  })
+
+  describe("removeShippingMethods", () => {
+    it("should remove a line item succesfully", async () => {
+      const [createdCart] = await service.create([
+        {
+          currency_code: "eur",
+        },
+      ])
+
+      const [method] = await service.addShippingMethods(createdCart.id, [
+        {
+          amount: 100,
+          name: "test",
+        },
+      ])
+
+      expect(method.id).not.toBe(null)
+
+      await service.removeShippingMethods(method.id)
+
+      const cart = await service.retrieve(createdCart.id, {
+        relations: ["shipping_methods"],
+      })
+
+      expect(cart.shipping_methods?.length).toBe(0)
+    })
+  })
 })