node/test/parallel/test-buffer-sharedarraybuffer.js at master · maritz/node

29 lines (20 loc) · 657 Bytes

/*global SharedArrayBuffer*/

'use strict';

require('../common');

const assert = require('assert');

const sab = new SharedArrayBuffer(24);

const arr1 = new Uint16Array(sab);

const arr2 = new Uint16Array(12);

arr2[0] = 5000;

arr1[0] = 5000;

arr1[1] = 4000;

arr2[1] = 4000;

const arr_buf = Buffer.from(arr1.buffer);

const ar_buf = Buffer.from(arr2.buffer);

assert.deepStrictEqual(arr_buf, ar_buf);

arr1[1] = 6000;

arr2[1] = 6000;

assert.deepStrictEqual(arr_buf, ar_buf);

// Checks for calling Buffer.byteLength on a SharedArrayBuffer

assert.strictEqual(Buffer.byteLength(sab), sab.byteLength);

assert.doesNotThrow(() => Buffer.from({ buffer: sab }));

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