first commit

src/modules/notifications/notifications.service.spec.ts

@@ -0,0 +1,44 @@
+import { NotFoundException } from '@nestjs/common';
+import { NotificationsService } from './notifications.service';
+
+describe('NotificationsService', () => {
+  it('recalculates unread count after markAllRead', async () => {
+    const notificationsRepository = {
+      markAllRead: jest.fn().mockResolvedValue(4),
+      countUnread: jest.fn().mockResolvedValue(2),
+    };
+    const notificationsGateway = {
+      emitUnreadCount: jest.fn(),
+    };
+
+    const service = new NotificationsService(
+      notificationsRepository as any,
+      notificationsGateway as any,
+    );
+
+    await expect(service.markAllRead('user-1')).resolves.toEqual({
+      message: 'All notifications marked as read',
+      updatedCount: 4,
+      unreadCount: 2,
+    });
+    expect(notificationsGateway.emitUnreadCount).toHaveBeenCalledWith('user-1', 2);
+  });
+
+  it('throws not found for invalid notification id in markRead', async () => {
+    const notificationsRepository = {
+      markRead: jest.fn(),
+      countUnread: jest.fn(),
+    };
+    const notificationsGateway = {
+      emitUnreadCount: jest.fn(),
+    };
+
+    const service = new NotificationsService(
+      notificationsRepository as any,
+      notificationsGateway as any,
+    );
+
+    await expect(service.markRead('user-1', 'invalid-id')).rejects.toBeInstanceOf(NotFoundException);
+    expect(notificationsRepository.markRead).not.toHaveBeenCalled();
+  });
+});