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This makes sure that no uninitialized bytes are leaked when the specified `totalLength` input value is greater than the actual total length of the specified buffers array, e.g. in Buffer.concat([Buffer.alloc(0)], 100). PR-URL: https://github.com/nodejs/node-private/pull/66 Reviewed-By: Rod Vagg <rod@vagg.org> Reviewed-By: Anna Henningsen <anna@addaleax.net>
60 lines
2.4 KiB
JavaScript
60 lines
2.4 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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var common = require('../common');
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var assert = require('assert');
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var zero = [];
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var one = [ new Buffer('asdf') ];
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var long = [];
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for (var i = 0; i < 10; i++) long.push(new Buffer('asdf'));
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var flatZero = Buffer.concat(zero);
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var flatOne = Buffer.concat(one);
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var flatLong = Buffer.concat(long);
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var flatLongLen = Buffer.concat(long, 40);
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assert(flatZero.length === 0);
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assert(flatOne.toString() === 'asdf');
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assert(flatOne === one[0]);
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assert(flatLong.toString() === (new Array(10+1).join('asdf')));
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assert(flatLongLen.toString() === (new Array(10+1).join('asdf')));
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var ones = new Buffer(10).fill('1');
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var empty = new Buffer(0);
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assert.equal(Buffer.concat([], 100).toString(), '');
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assert.equal(Buffer.concat([ones], 0).toString(), ones.toString()); // 0.12.x
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assert.equal(Buffer.concat([ones], 10).toString(), ones.toString());
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assert.equal(Buffer.concat([ones, ones], 10).toString(), ones.toString());
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assert.equal(Buffer.concat([empty, ones]).toString(), ones.toString());
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assert.equal(Buffer.concat([ones, empty, empty]).toString(), ones.toString());
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// The tail should be zero-filled
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assert.equal(
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Buffer.concat([empty, empty], 100).toString(),
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new Buffer(100).fill(0).toString());
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assert.equal(
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Buffer.concat([empty, ones], 40).toString(),
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Buffer.concat([ones, new Buffer(30).fill(0)]).toString());
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console.log("ok");
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