first commit

tests/unit/paylater.service.test.js

@@ -0,0 +1,46 @@
+const mockCharge = jest.fn();
+jest.mock('../../app/core/midtrans.service', () => ({
+    getCoreApi: jest.fn().mockReturnValue({
+        charge: mockCharge,
+        transaction: { status: jest.fn(), refund: jest.fn(), cancel: jest.fn() }
+    }),
+    getSnap: jest.fn().mockReturnValue({ createTransaction: jest.fn() })
+}));
+
+const mockOrderFindByPk = jest.fn();
+jest.mock('../../models/migration', () => ({
+    Order: { findByPk: mockOrderFindByPk, findOne: jest.fn(), update: jest.fn() },
+    Payment: { findOne: jest.fn(), create: jest.fn(), update: jest.fn() }
+}));
+
+const paylaterService = require('../../app/modules/paylater/services/paylater.service');
+
+describe('PayLaterService', () => {
+    beforeEach(() => {
+        jest.clearAllMocks();
+    });
+
+    it('should create an akulaku transaction successfully', async () => {
+        const payload = { order_id: 'u-123', external_id: 'INV-AK-001', amount: 1000000 };
+        mockCharge.mockResolvedValue({ status_code: '201' });
+        await paylaterService.createTransaction(payload, 'akulaku');
+        expect(mockCharge).toHaveBeenCalledWith(expect.objectContaining({
+            payment_type: 'akulaku'
+        }));
+    });
+
+    it('should fallback to order total if amount is missing', async () => {
+        const payload = { order_id: 'u-123', external_id: 'INV-AK-001' };
+        mockOrderFindByPk.mockResolvedValue({ total: 1000000 });
+        mockCharge.mockResolvedValue({ status_code: '201' });
+
+        await paylaterService.createTransaction(payload, 'kredivo');
+
+        expect(mockOrderFindByPk).toHaveBeenCalledWith('u-123');
+        expect(mockCharge).toHaveBeenCalledWith(expect.objectContaining({
+            transaction_details: expect.objectContaining({
+                gross_amount: 1000000
+            })
+        }));
+    });
+});