在与Jest进行测试时，RabbitMQ“频道已结束，将不会收到任何答复”

Question

我正在尝试编写TypeScript类来包装RabbitMQ功能并使用Jest进行测试。在测试中，我创建一个新类，并afterAll取消绑定队列，删除交换并关闭连接。但是，当我尝试它时，出现Channel ended, no reply will be forthcoming错误。我是RabbitMQ和Jest的新手，所以我可能会在这里完全离开。关于如何正确执行此操作的任何想法？

import * as amqp from 'amqplib';
import { IRabbitMQ, IQueue } from './IRabbitMQ.interface';

export class AMQPBroker {
    private amqpConnection: amqp.Connection;
    private amqpChannel: amqp.Channel;
    private amqpSettings: IRabbitMQ;
    private exchanges: string[];
    private queues: IQueue[];

    constructor(config: IRabbitMQ) {
        this.amqpSettings = config;
        this.exchanges = config.exchanges;
        this.queues = config.queues;
    }

    async start() {
        try {
            this.amqpConnection = await amqp.connect(this.amqpSettings.serverName);
            this.amqpChannel = await this.amqpConnection.createChannel();
            this.exchanges.forEach((ex) => {
                this.amqpChannel.assertExchange(ex, 'topic', { durable: false });
            });
            this.queues.forEach(async (q) => {
                await this.amqpChannel.assertQueue(q.name, { exclusive: true });
                await this.amqpChannel.bindQueue(q.name, this.exchanges[0], q.key);
            });
        } catch (e) {
            console.log(e);
        }
    }

    async close() {
        try {
            this.queues.forEach(async (q) => {
                await this.amqpChannel.unbindQueue(q.name, this.exchanges[0], q.key);
                await this.amqpChannel.deleteQueue(q.name);
            });

            this.exchanges.forEach(async (ex) => {
                this.amqpChannel.deleteExchange(ex);
            });

            await this.amqpChannel.close();
            await this.amqpConnection.close();
        } catch (e) {
            console.log(e);
        }
    }
}

测试：

import 'jest';
import { AMQPBroker } from '../rabbitMQ.main';
import { IRabbitMQ } from '../IRabbitMQ.interface';

const rabbitMQ: IRabbitMQ = {
    serverName: 'amqp://localhost',
    persistenceLevel: 0,
    exchanges: [
        'temp',
    ],
    queues: [
        {
            name: 'temp-read-queue',
            key: 'temp.event.read',
        },
        {
            name: 'temp-read-queue2',
            key: 'temp.event.read2',
        },
    ],
};


describe('RabbitMQ Lib Tests', () => {
    let broker: AMQPBroker;

    beforeAll(async (done) => {
        broker = new AMQPBroker(rabbitMQ);
        await broker.start();
        done();
    });

    test('New rabbitMQ class was created', async (done) => {
        console.log('here');
        done();
    });

    afterAll(async (done) => {
        await broker.close();
        done();
    });
});