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denoland-deno/tests/node_compat/test/parallel/test-buffer-safe-unsafe.js

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// deno-fmt-ignore-file
// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
// Taken from Node 20.11.1
// This file is automatically generated by `tests/node_compat/runner/setup.ts`. Do not modify this file manually.
'use strict';
require('../common');
const assert = require('assert');
const safe = Buffer.alloc(10);
function isZeroFilled(buf) {
for (let n = 0; n < buf.length; n++)
if (buf[n] !== 0) return false;
return true;
}
assert(isZeroFilled(safe));
// Test that unsafe allocations doesn't affect subsequent safe allocations
Buffer.allocUnsafe(10);
assert(isZeroFilled(new Float64Array(10)));
new Buffer(10);
assert(isZeroFilled(new Float64Array(10)));
Buffer.allocUnsafe(10);
assert(isZeroFilled(Buffer.alloc(10)));