Nestjs bullmq worker processor don't works with jest

[laurentvandelle]

Is there an existing issue for this?

• I have searched the existing issues

Current behavior

The test is still running with

Jest did not exit one second after the test run has completed.

'This usually means that there are asynchronous operations that weren't stopped in your tests. Consider running Jest with `--detectOpenHandles` to troubleshoot this issue.

Steps to reproduce

Step to reproduce

1. Create a new nest project : nest new nest-app
2. Install dependencies : npm i @nestjs/bullmq ioredis
3. Start a redis instance on default port 6379
4. Create this 2 files

app.service.ts

import { Injectable } from '@nestjs/common';
import { Job, Queue, Worker } from 'bullmq';
import Redis, { RedisOptions } from 'ioredis';

@Injectable()
export class AppService {
  private queue: Queue;
  private worker: Worker;
  private redis: Redis;

  connect() {
    const redisConfig: RedisOptions = {
      host: 'localhost',
      port: 6379,
      autoResubscribe: false,
      lazyConnect: true,
      maxRetriesPerRequest: 0,
      reconnectOnError: null,
      enableOfflineQueue: true,
    };
    this.redis = new Redis(redisConfig);
    this.queue = new Queue('queue1', { connection: this.redis });
    this.worker = new Worker(
      'queue1',
      async (job) => {
        console.log('PROCESS')
        await this.wait({});
        console.log('DONE')
        return job;
      },
      { connection: this.redis },
    );
    // Replace by this line and it works
    // this.worker = new Worker('queue1', '', { connection: this.redis });
  }

  async disconnect(): Promise<void> {
    await this.queue.close();
    await this.worker.close();
    await this.redis.quit();
  }

  async wait({ seconds = 1 }: { seconds?: number }): Promise<void> {
    await new Promise((resolve) => setTimeout(resolve, seconds * 1000));
  }
}

app.service.spec.ts

import { Test, TestingModule } from '@nestjs/testing';
import { AppService } from './app.service';

describe('Queue Service', () => {
  let appService: AppService;

  beforeAll(async () => {
    const module: TestingModule = await Test.createTestingModule({
      providers: [AppService],
    }).compile();
    appService = module.get<AppService>(AppService);
    appService.connect();
  });

  afterAll(async () => {
    await appService.disconnect();
  });

  it('Should pass', async () => {
    expect(true).toBeTruthy();
  });
});

Expected behavior

The test just succeed

Package version

10.0.1

Bull version

4.7.0

NestJS version

10.0.0

Node.js version

16.20.1

In which operating systems have you tested?

• macOS
• Windows
• Linux

Other

npm : 9.8.1

[kamilmysliwiec]

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