test(api): add domain layer unit tests across all modules

Cover admin events, notifications, reviews, search VOs, listings (property,
media, events, price/geo/address VOs), auth events, payment events,
subscription events, and analytics events. Raises domain test coverage
from ~24% to ~75%.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/api/src/modules/payments/domain/__tests__/payment-events.spec.ts

@@ -0,0 +1,62 @@
+import { describe, it, expect } from 'vitest';
+import { PaymentCreatedEvent } from '../events/payment-created.event';
+import { PaymentCompletedEvent } from '../events/payment-completed.event';
+import { PaymentFailedEvent } from '../events/payment-failed.event';
+
+describe('Payment Domain Events', () => {
+  describe('PaymentCreatedEvent', () => {
+    it('creates event with correct properties', () => {
+      const event = new PaymentCreatedEvent(
+        'payment-1',
+        'user-1',
+        'VNPAY',
+        'SUBSCRIPTION',
+        500_000n,
+      );
+
+      expect(event.eventName).toBe('payment.created');
+      expect(event.aggregateId).toBe('payment-1');
+      expect(event.userId).toBe('user-1');
+      expect(event.provider).toBe('VNPAY');
+      expect(event.type).toBe('SUBSCRIPTION');
+      expect(event.amountVND).toBe(500_000n);
+      expect(event.occurredAt).toBeInstanceOf(Date);
+    });
+
+    it('creates event for LISTING_FEE type', () => {
+      const event = new PaymentCreatedEvent(
+        'payment-2',
+        'user-2',
+        'VNPAY',
+        'LISTING_FEE',
+        100_000n,
+      );
+      expect(event.type).toBe('LISTING_FEE');
+    });
+  });
+
+  describe('PaymentCompletedEvent', () => {
+    it('creates event with correct properties', () => {
+      const event = new PaymentCompletedEvent('payment-1', 'user-1', 'VNPAY', 500_000n);
+
+      expect(event.eventName).toBe('payment.completed');
+      expect(event.aggregateId).toBe('payment-1');
+      expect(event.userId).toBe('user-1');
+      expect(event.provider).toBe('VNPAY');
+      expect(event.amountVND).toBe(500_000n);
+      expect(event.occurredAt).toBeInstanceOf(Date);
+    });
+  });
+
+  describe('PaymentFailedEvent', () => {
+    it('creates event with correct properties', () => {
+      const event = new PaymentFailedEvent('payment-1', 'user-1', 'VNPAY');
+
+      expect(event.eventName).toBe('payment.failed');
+      expect(event.aggregateId).toBe('payment-1');
+      expect(event.userId).toBe('user-1');
+      expect(event.provider).toBe('VNPAY');
+      expect(event.occurredAt).toBeInstanceOf(Date);
+    });
+  });
+});