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'use strict';
const common = require('../common');
const assert = require('assert');
const fs = require('fs/promises');
const { scheduler } = require('timers/promises');
const { parentPort, Worker } = require('worker_threads');
const MAX_ITERATIONS = 5;
const MAX_THREADS = 6;
// Do not use isMainThread so that this test itself can be run inside a Worker.
if (!process.env.HAS_STARTED_WORKER) {
process.env.HAS_STARTED_WORKER = 1;
function spinWorker(iter) {
const w = new Worker(__filename);
w.on('message', common.mustCall((msg) => {
assert.strictEqual(msg, 'terminate');
w.terminate();
}));
w.on('exit', common.mustCall(() => {
if (iter < MAX_ITERATIONS)
spinWorker(++iter);
}));
}
for (let i = 0; i < MAX_THREADS; i++) {
spinWorker(0);
}
} else {
async function open_nok() {
await assert.rejects(
fs.open('this file does not exist'),
{
code: 'ENOENT',
syscall: 'open'
}
);
await scheduler.yield();
await open_nok();
}
// These async function calls never return as they are meant to continually
// open nonexistent files until the worker is terminated.
open_nok();
open_nok();
parentPort.postMessage('terminate');
}
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