node/test/parallel/test-buffer-zero-fill-cli.js
Filip Skokan 2e1d9581e0
Revert "buffer: move SlowBuffer to EOL"
This reverts commit 0579e0ec93

PR-URL: https://github.com/nodejs/node/pull/58211
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
Reviewed-By: LiviaMedeiros <livia@cirno.name>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>
2025-05-07 21:42:21 +02:00

32 lines
769 B
JavaScript

'use strict';
// Flags: --zero-fill-buffers
// when using --zero-fill-buffers, every Buffer and SlowBuffer
// instance must be zero filled upon creation
require('../common');
const SlowBuffer = require('buffer').SlowBuffer;
const assert = require('assert');
function isZeroFilled(buf) {
for (const n of buf)
if (n > 0) return false;
return true;
}
// This can be somewhat unreliable because the
// allocated memory might just already happen to
// contain all zeroes. The test is run multiple
// times to improve the reliability.
for (let i = 0; i < 50; i++) {
const bufs = [
Buffer.alloc(20),
Buffer.allocUnsafe(20),
SlowBuffer(20),
Buffer(20),
new SlowBuffer(20),
];
for (const buf of bufs) {
assert(isZeroFilled(buf));
}
}