test: add workerdata-sharedarraybuffer test · nodejs/node@792335f

// Flags: --expose-gc --experimental-worker

'use strict';

const common = require('../common');

const assert = require('assert');

const { Worker } = require('worker_threads');

{

const sharedArrayBuffer = new SharedArrayBuffer(12);

const local = Buffer.from(sharedArrayBuffer);

const w = new Worker(`

const { parentPort, workerData } = require('worker_threads');

const local = Buffer.from(workerData.sharedArrayBuffer);

parentPort.on('message', () => {

local.write('world!', 6);

parentPort.postMessage('written!');

});

`, {

eval: true,

workerData: { sharedArrayBuffer }

});

w.on('message', common.mustCall(() => {

assert.strictEqual(local.toString(), 'Hello world!');

global.gc();

w.terminate();

}));

w.postMessage({});

// This would be a race condition if the memory regions were overlapping

local.write('Hello ');

}