first commit

tests/unit/e-wallet.service.test.js

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+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() })
+}));
+
+jest.mock('../../models/migration', () => ({
+    Order: { findByPk: jest.fn(), findOne: jest.fn(), update: jest.fn() },
+    Payment: { findOne: jest.fn(), create: jest.fn(), update: jest.fn() }
+}));
+
+const eWalletService = require('../../app/modules/e-wallet/services/e-wallet.service');
+
+describe('EWalletService', () => {
+    beforeEach(() => {
+        jest.clearAllMocks();
+    });
+
+    it('should create a gopay transaction successfully', async () => {
+        const payload = { order_id: 'u-123', external_id: 'INV-G-001', amount: 25000 };
+        mockCharge.mockResolvedValue({ status_code: '201' });
+        const result = await eWalletService.createTransaction(payload, 'gopay');
+        expect(mockCharge).toHaveBeenCalled();
+        expect(result.status_code).toBe('201');
+    });
+
+    it('should create a shopeepay transaction successfully', async () => {
+        const payload = { order_id: 'u-123', external_id: 'INV-S-001', amount: 15000 };
+        mockCharge.mockResolvedValue({ status_code: '201' });
+        const result = await eWalletService.createTransaction(payload, 'shopeepay');
+        expect(mockCharge).toHaveBeenCalled();
+    });
+});