test: comprehensive test suite for Manoon storefront
Add complete testing infrastructure with Vitest: Testing Stack: - Vitest for unit/integration tests - @testing-library/react for component tests - @playwright/test for E2E (installed, ready to configure) - MSW for API mocking Test Coverage: 1. Webhook Handler Tests (src/__tests__/integration/api/webhooks/saleor.test.ts) - ORDER_CONFIRMED: Emails + analytics - ORDER_CREATED: No duplicates - ORDER_FULFILLED: Tracking info - ORDER_CANCELLED: Cancellation reason - ORDER_FULLY_PAID: Payment confirmation - Error handling (400/500 responses) - Currency handling (RSD preservation) 2. OrderNotificationService Tests - Email sending in all 4 languages (SR, EN, DE, FR) - Price formatting verification - Admin vs Customer templates - Address formatting - Tracking info handling 3. AnalyticsService Tests - Revenue tracking with correct currency - Duplicate prevention verification - Error handling (doesn't break flow) - Singleton pattern 4. Utility Tests - formatPrice: RSD, EUR, USD formatting - Decimal and zero handling Fixtures: - Realistic order data in src/__tests__/fixtures/orders.ts - Multiple scenarios (with tracking, cancelled, etc.) Scripts: - npm test: Run tests in watch mode - npm run test:run: Run once - npm run test:coverage: Generate coverage report - npm run test:e2e: Run Playwright tests Coverage target: 80%+ for critical paths
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src/__tests__/integration/api/webhooks/saleor.test.ts
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src/__tests__/integration/api/webhooks/saleor.test.ts
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import { describe, it, expect, vi, beforeEach } from "vitest";
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import { NextRequest } from "next/server";
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import { POST, GET } from "@/app/api/webhooks/saleor/route";
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import { orderNotificationService } from "@/lib/services/OrderNotificationService";
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import { analyticsService } from "@/lib/services/AnalyticsService";
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import { mockOrderPayload, mockOrderWithTracking, mockOrderCancelled } from "../../../fixtures/orders";
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// Mock the services
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vi.mock("@/lib/services/OrderNotificationService", () => ({
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orderNotificationService: {
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sendOrderConfirmation: vi.fn().mockResolvedValue(undefined),
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sendOrderConfirmationToAdmin: vi.fn().mockResolvedValue(undefined),
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sendOrderShipped: vi.fn().mockResolvedValue(undefined),
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sendOrderShippedToAdmin: vi.fn().mockResolvedValue(undefined),
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sendOrderCancelled: vi.fn().mockResolvedValue(undefined),
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sendOrderCancelledToAdmin: vi.fn().mockResolvedValue(undefined),
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sendOrderPaid: vi.fn().mockResolvedValue(undefined),
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sendOrderPaidToAdmin: vi.fn().mockResolvedValue(undefined),
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},
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}));
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vi.mock("@/lib/services/AnalyticsService", () => ({
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analyticsService: {
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trackOrderReceived: vi.fn().mockResolvedValue(undefined),
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trackRevenue: vi.fn().mockResolvedValue(undefined),
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track: vi.fn().mockResolvedValue(undefined),
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},
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}));
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describe("Saleor Webhook Handler", () => {
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beforeEach(() => {
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vi.clearAllMocks();
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});
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describe("GET /api/webhooks/saleor", () => {
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it("should return health check response", async () => {
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const response = await GET();
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const data = await response.json();
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expect(response.status).toBe(200);
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expect(data.status).toBe("ok");
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expect(data.supportedEvents).toContain("ORDER_CONFIRMED");
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expect(data.supportedEvents).toContain("ORDER_CREATED");
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});
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});
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describe("POST /api/webhooks/saleor - ORDER_CONFIRMED", () => {
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it("should process ORDER_CONFIRMED and send customer + admin emails", async () => {
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const request = new NextRequest("http://localhost:3000/api/webhooks/saleor", {
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method: "POST",
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headers: {
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"saleor-event": "ORDER_CONFIRMED",
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"saleor-domain": "api.manoonoils.com",
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},
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body: JSON.stringify([mockOrderPayload]),
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});
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const response = await POST(request);
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const data = await response.json();
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expect(response.status).toBe(200);
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expect(data.success).toBe(true);
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// Should send customer email
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expect(orderNotificationService.sendOrderConfirmation).toHaveBeenCalledTimes(1);
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// Should send admin email
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expect(orderNotificationService.sendOrderConfirmationToAdmin).toHaveBeenCalledTimes(1);
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// Should track analytics
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expect(analyticsService.trackOrderReceived).toHaveBeenCalledTimes(1);
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expect(analyticsService.trackRevenue).toHaveBeenCalledTimes(1);
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// Verify revenue tracking has correct data
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expect(analyticsService.trackRevenue).toHaveBeenCalledWith({
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amount: 10000,
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currency: "RSD",
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orderId: mockOrderPayload.id,
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orderNumber: String(mockOrderPayload.number),
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});
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});
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it("should NOT track analytics for ORDER_CREATED (prevents duplication)", async () => {
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const request = new NextRequest("http://localhost:3000/api/webhooks/saleor", {
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method: "POST",
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headers: {
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"saleor-event": "ORDER_CREATED",
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"saleor-domain": "api.manoonoils.com",
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},
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body: JSON.stringify([mockOrderPayload]),
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});
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const response = await POST(request);
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expect(response.status).toBe(200);
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// Should NOT send customer email
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expect(orderNotificationService.sendOrderConfirmation).not.toHaveBeenCalled();
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// Should NOT track analytics
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expect(analyticsService.trackOrderReceived).not.toHaveBeenCalled();
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expect(analyticsService.trackRevenue).not.toHaveBeenCalled();
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// Should still send admin notification
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expect(orderNotificationService.sendOrderConfirmationToAdmin).toHaveBeenCalledTimes(1);
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});
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});
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describe("POST /api/webhooks/saleor - ORDER_FULFILLED", () => {
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it("should send shipping emails with tracking info", async () => {
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const request = new NextRequest("http://localhost:3000/api/webhooks/saleor", {
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method: "POST",
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headers: {
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"saleor-event": "ORDER_FULFILLED",
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"saleor-domain": "api.manoonoils.com",
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},
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body: JSON.stringify([mockOrderWithTracking]),
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});
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const response = await POST(request);
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expect(response.status).toBe(200);
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expect(orderNotificationService.sendOrderShipped).toHaveBeenCalledWith(
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expect.any(Object),
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"TRK123456789",
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"https://tracking.example.com/TRK123456789"
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);
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expect(orderNotificationService.sendOrderShippedToAdmin).toHaveBeenCalledWith(
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expect.any(Object),
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"TRK123456789",
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"https://tracking.example.com/TRK123456789"
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);
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});
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});
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describe("POST /api/webhooks/saleor - ORDER_CANCELLED", () => {
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it("should send cancellation emails with reason", async () => {
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const request = new NextRequest("http://localhost:3000/api/webhooks/saleor", {
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method: "POST",
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headers: {
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"saleor-event": "ORDER_CANCELLED",
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"saleor-domain": "api.manoonoils.com",
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},
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body: JSON.stringify([mockOrderCancelled]),
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});
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const response = await POST(request);
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expect(response.status).toBe(200);
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expect(orderNotificationService.sendOrderCancelled).toHaveBeenCalledWith(
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expect.any(Object),
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"Customer requested cancellation"
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);
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expect(orderNotificationService.sendOrderCancelledToAdmin).toHaveBeenCalledWith(
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expect.any(Object),
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"Customer requested cancellation"
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);
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});
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});
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describe("POST /api/webhooks/saleor - ORDER_FULLY_PAID", () => {
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it("should send payment confirmation emails", async () => {
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const request = new NextRequest("http://localhost:3000/api/webhooks/saleor", {
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method: "POST",
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headers: {
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"saleor-event": "ORDER_FULLY_PAID",
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"saleor-domain": "api.manoonoils.com",
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},
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body: JSON.stringify([mockOrderPayload]),
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});
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const response = await POST(request);
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expect(response.status).toBe(200);
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expect(orderNotificationService.sendOrderPaid).toHaveBeenCalledTimes(1);
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expect(orderNotificationService.sendOrderPaidToAdmin).toHaveBeenCalledTimes(1);
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});
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});
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describe("Error Handling", () => {
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it("should return 400 for missing order in payload", async () => {
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const request = new NextRequest("http://localhost:3000/api/webhooks/saleor", {
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method: "POST",
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headers: {
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"saleor-event": "ORDER_CONFIRMED",
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"saleor-domain": "api.manoonoils.com",
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},
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body: JSON.stringify([]), // Empty array
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});
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const response = await POST(request);
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const data = await response.json();
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expect(response.status).toBe(400);
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expect(data.error).toBe("No order in payload");
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});
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it("should return 400 for missing saleor-event header", async () => {
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const request = new NextRequest("http://localhost:3000/api/webhooks/saleor", {
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method: "POST",
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headers: {
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"saleor-domain": "api.manoonoils.com",
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},
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body: JSON.stringify([mockOrderPayload]),
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});
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const response = await POST(request);
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const data = await response.json();
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expect(response.status).toBe(400);
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expect(data.error).toBe("Missing saleor-event header");
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});
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it("should return 200 for unsupported events (graceful skip)", async () => {
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const request = new NextRequest("http://localhost:3000/api/webhooks/saleor", {
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method: "POST",
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headers: {
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"saleor-event": "UNSUPPORTED_EVENT",
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"saleor-domain": "api.manoonoils.com",
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},
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body: JSON.stringify([mockOrderPayload]),
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});
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const response = await POST(request);
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const data = await response.json();
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expect(response.status).toBe(200);
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expect(data.message).toBe("Event not supported");
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});
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it("should handle server errors gracefully", async () => {
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// Simulate service throwing error
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vi.mocked(orderNotificationService.sendOrderConfirmationToAdmin).mockRejectedValueOnce(
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new Error("Email service down")
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);
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const request = new NextRequest("http://localhost:3000/api/webhooks/saleor", {
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method: "POST",
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headers: {
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"saleor-event": "ORDER_CREATED",
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"saleor-domain": "api.manoonoils.com",
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},
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body: JSON.stringify([mockOrderPayload]),
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});
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const response = await POST(request);
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expect(response.status).toBe(500);
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});
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});
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describe("Currency Handling", () => {
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it("should preserve RSD currency from Saleor payload", async () => {
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const rsdOrder = {
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...mockOrderPayload,
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total_gross_amount: "5479",
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channel: { currency_code: "RSD" },
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};
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const request = new NextRequest("http://localhost:3000/api/webhooks/saleor", {
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method: "POST",
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headers: {
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"saleor-event": "ORDER_CONFIRMED",
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"saleor-domain": "api.manoonoils.com",
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},
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body: JSON.stringify([rsdOrder]),
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});
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await POST(request);
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// Verify the order passed to analytics has correct currency
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expect(analyticsService.trackRevenue).toHaveBeenCalledWith(
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expect.objectContaining({
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amount: 5479,
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currency: "RSD",
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})
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);
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});
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});
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});
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