'use strict'; const common = require('../common'); const assert = require('assert'); const cluster = require('cluster'); if (cluster.isMaster) { const worker = cluster.fork(); worker.on('exit', common.mustCall((code, signal) => { assert.strictEqual(code, 0, 'worker did not exit normally'); assert.strictEqual(signal, null, 'worker did not exit normally'); })); } else { const net = require('net'); const server = net.createServer(); server.listen(common.PORT, common.mustCall(() => { process.disconnect(); })); }