fix: make customline item tax dependent on (shipping address) country (#331)

Author: BramKaashoek

.changeset/rotten-ravens-knock.md

@@ -0,0 +1,5 @@
+---
+"@labdigital/commercetools-mock": patch
+---
+
+fix: make tax rate for custom line item dependent on the cart.shippingAddress.country ?? cart.country

src/repositories/cart/actions.ts

@@ -346,7 +346,7 @@ export class CartUpdateHandler
 			context.projectKey,
 			{ money, name, slug, quantity, taxCategory, custom, priceMode, key },
 			this._storage,
-			resource.country,
+			resource.shippingAddress?.country ?? resource.country,
 		);
 
 		resource.customLineItems.push(customLineItem);

src/repositories/cart/helpers.ts

@@ -178,7 +178,7 @@ export const createCustomLineItemFromDraft = (
 	const taxRate = taxCategory
 		? taxCategory.rates.find(
 				(rate) => !rate.country || rate.country === country,
-			) || taxCategory.rates[0]
+			)
 		: undefined;
 
 	return {

src/repositories/cart/index.ts

@@ -81,7 +81,7 @@ export class CartRepository extends AbstractResourceRepository<"cart"> {
 					context.projectKey,
 					draftCustomLineItem,
 					this._storage,
-					draft.country,
+					draft.shippingAddress?.country ?? draft.country,
 				),
 			) ?? [];
 

src/services/cart.test.ts

@@ -116,6 +116,7 @@ describe("Cart Update Actions", () => {
 	const createCart = async (currency: string) => {
 		const response = await supertest(ctMock.app).post("/dummy/carts").send({
 			currency,
+			country: "NL",
 		});
 		expect(response.status).toBe(201);
 		cart = response.body;
@@ -653,11 +654,11 @@ describe("Cart Update Actions", () => {
 			.post(`/dummy/carts/${cart.id}`)
 			.send({
 				version: 1,
-				actions: [{ action: "setCountry", country: "NL" }],
+				actions: [{ action: "setCountry", country: "BE" }],
 			});
 		expect(response.status).toBe(200);
 		expect(response.body.version).toBe(2);
-		expect(response.body.country).toBe("NL");
+		expect(response.body.country).toBe("BE");
 	});
 
 	test("setDirectDiscounts", async () => {