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/search/domain/__tests__/search-domain.spec.ts

@@ -0,0 +1,122 @@
+import { describe, it, expect } from 'vitest';
+import { SearchFilter } from '../value-objects/search-filter.vo';
+import { GeoFilter } from '../value-objects/geo-filter.vo';
+
+describe('Search Domain', () => {
+  describe('SearchFilter', () => {
+    it('creates filter with all properties', () => {
+      const filter = SearchFilter.create({
+        query: 'nhà phố quận 1',
+        propertyType: 'TOWNHOUSE',
+        transactionType: 'SALE',
+        priceMin: 1_000_000_000,
+        priceMax: 5_000_000_000,
+        areaMin: 50,
+        areaMax: 200,
+        bedrooms: 3,
+        district: 'Quận 1',
+        city: 'Hồ Chí Minh',
+        sortBy: 'price_asc',
+        page: 2,
+        perPage: 10,
+      });
+
+      expect(filter.query).toBe('nhà phố quận 1');
+      expect(filter.propertyType).toBe('TOWNHOUSE');
+      expect(filter.transactionType).toBe('SALE');
+      expect(filter.priceMin).toBe(1_000_000_000);
+      expect(filter.priceMax).toBe(5_000_000_000);
+      expect(filter.areaMin).toBe(50);
+      expect(filter.areaMax).toBe(200);
+      expect(filter.bedrooms).toBe(3);
+      expect(filter.district).toBe('Quận 1');
+      expect(filter.city).toBe('Hồ Chí Minh');
+      expect(filter.sortBy).toBe('price_asc');
+      expect(filter.page).toBe(2);
+      expect(filter.perPage).toBe(10);
+    });
+
+    it('applies default sortBy as relevance', () => {
+      const filter = SearchFilter.create({});
+      expect(filter.sortBy).toBe('relevance');
+    });
+
+    it('applies default page as 1', () => {
+      const filter = SearchFilter.create({});
+      expect(filter.page).toBe(1);
+    });
+
+    it('applies default perPage as 20', () => {
+      const filter = SearchFilter.create({});
+      expect(filter.perPage).toBe(20);
+    });
+
+    it('caps perPage at 100', () => {
+      const filter = SearchFilter.create({ perPage: 500 });
+      expect(filter.perPage).toBe(100);
+    });
+
+    it('returns undefined for unset optional properties', () => {
+      const filter = SearchFilter.create({});
+      expect(filter.query).toBeUndefined();
+      expect(filter.propertyType).toBeUndefined();
+      expect(filter.transactionType).toBeUndefined();
+      expect(filter.priceMin).toBeUndefined();
+      expect(filter.priceMax).toBeUndefined();
+      expect(filter.areaMin).toBeUndefined();
+      expect(filter.areaMax).toBeUndefined();
+      expect(filter.bedrooms).toBeUndefined();
+      expect(filter.district).toBeUndefined();
+      expect(filter.city).toBeUndefined();
+    });
+  });
+
+  describe('GeoFilter', () => {
+    it('creates filter with all properties', () => {
+      const filter = GeoFilter.create({
+        lat: 10.7769,
+        lng: 106.7009,
+        radiusKm: 5,
+        propertyType: 'APARTMENT',
+        transactionType: 'RENT',
+        priceMin: 5_000_000,
+        priceMax: 20_000_000,
+        sortBy: 'distance',
+        page: 1,
+        perPage: 15,
+      });
+
+      expect(filter.lat).toBe(10.7769);
+      expect(filter.lng).toBe(106.7009);
+      expect(filter.radiusKm).toBe(5);
+      expect(filter.propertyType).toBe('APARTMENT');
+      expect(filter.transactionType).toBe('RENT');
+      expect(filter.priceMin).toBe(5_000_000);
+      expect(filter.priceMax).toBe(20_000_000);
+      expect(filter.sortBy).toBe('distance');
+      expect(filter.page).toBe(1);
+      expect(filter.perPage).toBe(15);
+    });
+
+    it('caps radiusKm at 100', () => {
+      const filter = GeoFilter.create({ lat: 10.7, lng: 106.7, radiusKm: 200 });
+      expect(filter.radiusKm).toBe(100);
+    });
+
+    it('applies default sortBy as distance', () => {
+      const filter = GeoFilter.create({ lat: 10.7, lng: 106.7, radiusKm: 5 });
+      expect(filter.sortBy).toBe('distance');
+    });
+
+    it('applies default page and perPage', () => {
+      const filter = GeoFilter.create({ lat: 10.7, lng: 106.7, radiusKm: 5 });
+      expect(filter.page).toBe(1);
+      expect(filter.perPage).toBe(20);
+    });
+
+    it('caps perPage at 100', () => {
+      const filter = GeoFilter.create({ lat: 10.7, lng: 106.7, radiusKm: 5, perPage: 300 });
+      expect(filter.perPage).toBe(100);
+    });
+  });
+});