201017.3 · test: add common.mustSucceed
'use strict';
const common = require('../common');
const assert = require('assert');
const dgram = require('dgram');
const client = dgram.createSocket('udp4');
const buf = Buffer.allocUnsafe(256);
const onMessage = common.mustSucceed((bytes) => {
assert.strictEqual(bytes, buf.length);
client.close();
});
client.bind(0, () => client.send(buf,
client.address().port,
common.localhostIPv4,
onMessage));