node/test/parallel/test-dgram-ref.js

'use strict';
const common = require('../common');
const dgram = require('dgram');

// should not hang, see #1282
dgram.createSocket('udp4');
dgram.createSocket('udp6');

{
  // Test the case of ref()'ing a socket with no handle.
  const s = dgram.createSocket('udp4');

  s.close(common.mustCall(() => s.ref()));
}