ioredis left open handles in Jest

Hello. I can’t resolve the issue with my Jest tests because of ioredis. Recently I started recieving messages after Jest finished all tests:

A worker process has failed to exit gracefully and has been force exited. This is likely caused by tests leaking due to improper teardown. Try running with --runInBand --detectOpenHandles to find leaks.

After a few days of struggling I found the module called leaked-handles, installed it and started debugging. And it seems like both redis.quit() and redis.disconnect() not working and connection remains opened after those calls. The error is:

at D:\github\umbress\node_modules\ioredis\built\connectors\StandaloneConnector.js:58:45
tcp stream {
  fd: -1,
  readable: true,
  writable: true,
  address: { address: '127.0.0.1', family: 'IPv4', port: 59823 },
  serverAddr: null
}

I couldn’t find any mentioning of ioredis at Jest repo and viceversa. Is there anything that can be done to close connection properly?

[alanbueno]

+1 with the issue here, had both redis.quit() awaited and redis.disconnect() called but nothing 😕

[beneater]

I’m having a similar issue. I was able to work around it by continually checking the connection status. If it’s not disconnected, just wait 200ms and check again, etc:

redis.disconnect();
while (redis.status === "connected") {
  await new Promise(r => setTimeout(r, 200));
}