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49d6026fd1
PR-URL: https://github.com/nodejs/node/pull/60623 Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
40 lines
1.0 KiB
JavaScript
40 lines
1.0 KiB
JavaScript
'use strict';
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// Flags: --zero-fill-buffers
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// when using --zero-fill-buffers, every Buffer
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// instance must be zero filled upon creation
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require('../common');
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const { Buffer } = require('buffer');
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const assert = require('assert');
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function isZeroFilled(buf) {
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for (const n of buf)
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if (n > 0) return false;
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return true;
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}
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// We have to consume the data from the pool as otherwise
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// we would be testing what's in snapshot, which is zero-filled
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// regardless of the flag presence, and we want to test the flag
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for (let i = 0; i < 8; i++) {
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assert(isZeroFilled(Buffer.allocUnsafe(1024)));
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}
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// This can be somewhat unreliable because the
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// allocated memory might just already happen to
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// contain all zeroes. The test is run multiple
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// times to improve the reliability.
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for (let i = 0; i < 50; i++) {
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const bufs = [
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Buffer.alloc(20),
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Buffer.allocUnsafe(20),
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Buffer.allocUnsafeSlow(20), // Heap
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Buffer.allocUnsafeSlow(128), // Alloc
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Buffer(20),
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];
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for (const buf of bufs) {
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assert(isZeroFilled(buf));
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}
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}
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