test(holders): add integration test for empty key holders list endpoint

src/__tests__/integration/creator-holders-empty-list.test.ts

@@ -0,0 +1,53 @@
+import supertest from 'supertest';
+import app from '../../app';
+import { prisma } from '../../utils/prisma.utils';
+
+describe('GET /api/v1/creators/:id/holders empty list', () => {
+   let creatorId: string;
+
+   beforeAll(async () => {
+      const user = await prisma.user.create({
+         data: {
+            id: 'holder-empty-test-user',
+            email: 'holder-empty-test@example.com',
+            passwordHash: 'dummy-hash',
+            firstName: 'Holder',
+            lastName: 'EmptyTest',
+         },
+      });
+
+      const creator = await prisma.creatorProfile.create({
+         data: {
+            userId: user.id,
+            handle: 'holder-empty-creator',
+            displayName: 'Holder Empty Creator',
+         },
+      });
+      creatorId = creator.id;
+   });
+
+   afterAll(async () => {
+      await prisma.creatorProfile.delete({
+         where: { id: creatorId },
+      });
+      await prisma.user.delete({
+         where: { id: 'holder-empty-test-user' },
+      });
+      await prisma.$disconnect();
+   });
+
+   it('returns 200 with empty items array for a creator with no holders', async () => {
+      const res = await supertest(app).get(
+         `/api/v1/creators/${creatorId}/holders`
+      );
+
+      expect(res.status).toBe(200);
+      expect(res.body.success).toBe(true);
+
+      expect(res.body.data.items).toEqual([]);
+      expect(res.body.data.meta).toMatchObject({
+         total: 0,
+         hasMore: false,
+      });
+   });
+});