support_backend/tests/unit/identity/agent-ticket-queue-guard.test.ts

import { describe, it, expect } from 'vitest';
import { Agent } from '@prisma/client';
import { AgentsService } from '@/modules/identity/agents/service/agents.service';
import { AgentsRepository } from '@/modules/identity/agents/repository/agents.repository';

function fakeRepo(agent: Agent | null): AgentsRepository {
  return { findByUserId: async () => agent } as unknown as AgentsRepository;
}

describe('AgentsService.requireAgentForUser', () => {
  it('resolves the linked Agent when one exists', async () => {
    const agent = { id: 'agent-1', userId: 'user-1' } as Agent;
    const service = new AgentsService(fakeRepo(agent));
    await expect(service.requireAgentForUser('user-1')).resolves.toBe(agent);
  });

  it('throws a specific NotFoundError when no Agent is linked to this User', async () => {
    const service = new AgentsService(fakeRepo(null));
    await expect(service.requireAgentForUser('user-2')).rejects.toMatchObject({
      statusCode: 404,
      message: 'No agent profile is linked to this account.',
    });
  });
});