node-resque/__tests__/utils/specHelper.ts

an opinionated implementation of resque in node

const Redis = require("ioredis");
const namespace = `resque-test-${process.env.JEST_WORKER_ID || 0}`;
const queue = "test_queue";
const pkg = "ioredis";
const NodeResque = require("../../src/index");

const SpecHelper = {
  pkg: pkg,
  namespace: namespace,
  queue: queue,
  timeout: 500,
  redis: null,
  connectionDetails: {
    pkg: pkg,
    host: "127.0.0.1",
    password: "",
    port: 6379,
    database: parseInt(process.env.JEST_WORKER_ID || "0"),
    namespace: namespace,
    // looping: true
  },

  connect: async function () {
    this.redis = Redis.createClient(
      this.connectionDetails.port,
      this.connectionDetails.host,
      this.connectionDetails.options
    );
    this.redis.setMaxListeners(0);
    if (
      this.connectionDetails.password !== null &&
      this.connectionDetails.password !== ""
    ) {
      await this.redis.auth(this.connectionDetails.password);
    }
    await this.redis.select(this.connectionDetails.database);
    this.connectionDetails.redis = this.redis;
  },

  cleanup: async function () {
    const keys = await this.redis.keys(this.namespace + "*");
    if (keys.length > 0) await this.redis.del(keys);
  },

  disconnect: async function () {
    if (typeof this.redis.disconnect === "function") {
      await this.redis.disconnect();
    } else if (typeof this.redis.quit === "function") {
      await this.redis.quit();
    }

    delete this.redis;
    delete this.connectionDetails.redis;
  },

  startAll: async function (jobs) {
    const Worker = NodeResque.Worker;
    const Scheduler = NodeResque.Scheduler;
    const Queue = NodeResque.Queue;

    this.worker = new Worker(
      {
        connection: { redis: this.redis },
        queues: this.queue,
        timeout: this.timeout,
      },
      jobs
    );
    await this.worker.connect();

    this.scheduler = new Scheduler({
      connection: { redis: this.redis },
      timeout: this.timeout,
    });
    await this.scheduler.connect();

    this.queue = new Queue({ connection: { redis: this.redis } });
    await this.queue.connect();
  },

  endAll: async function () {
    await this.worker.end();
    await this.scheduler.end();
  },

  popFromQueue: async function () {
    return this.redis.lpop(this.namespace + ":queue:" + this.queue);
  },

  cleanConnectionDetails: function () {
    interface connectionDetails {
      database: number;
      namespace: string;
    }

    const out: connectionDetails = {
      database: parseInt(process.env.JEST_WORKER_ID || "0"),
      namespace: namespace,
    };

    for (const i in this.connectionDetails) {
      if (i !== "redis") {
        out[i] = this.connectionDetails[i];
      }
    }

    return out;
  },
};

export default SpecHelper;