node/test/parallel/test-buffer-slow.js
ZYSzys 6fb7baf935
buffer: harden validation of buffer allocation size
This makes using `NaN` as the buffer size throw an error.

Fixes: https://github.com/nodejs/node/issues/26151

PR-URL: https://github.com/nodejs/node/pull/26162
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
2019-02-21 22:08:53 +01:00

60 lines
1.8 KiB
JavaScript

'use strict';
const common = require('../common');
const assert = require('assert');
const buffer = require('buffer');
const SlowBuffer = buffer.SlowBuffer;
const ones = [1, 1, 1, 1];
// should create a Buffer
let sb = SlowBuffer(4);
assert(sb instanceof Buffer);
assert.strictEqual(sb.length, 4);
sb.fill(1);
for (const [key, value] of sb.entries()) {
assert.deepStrictEqual(value, ones[key]);
}
// underlying ArrayBuffer should have the same length
assert.strictEqual(sb.buffer.byteLength, 4);
// should work without new
sb = SlowBuffer(4);
assert(sb instanceof Buffer);
assert.strictEqual(sb.length, 4);
sb.fill(1);
for (const [key, value] of sb.entries()) {
assert.deepStrictEqual(value, ones[key]);
}
// should work with edge cases
assert.strictEqual(SlowBuffer(0).length, 0);
try {
assert.strictEqual(
SlowBuffer(buffer.kMaxLength).length, buffer.kMaxLength);
} catch (e) {
// Don't match on message as it is from the JavaScript engine. V8 and
// ChakraCore provide different messages.
assert.strictEqual(e.name, 'RangeError');
}
// should work with number-coercible values
assert.strictEqual(SlowBuffer('6').length, 6);
assert.strictEqual(SlowBuffer(true).length, 1);
// should throw with invalid length
const bufferMaxSizeMsg = common.expectsError({
code: 'ERR_INVALID_OPT_VALUE',
type: RangeError,
message: /^The value "[^"]*" is invalid for option "size"$/
}, 7);
assert.throws(() => SlowBuffer(), bufferMaxSizeMsg);
assert.throws(() => SlowBuffer(NaN), bufferMaxSizeMsg);
assert.throws(() => SlowBuffer({}), bufferMaxSizeMsg);
assert.throws(() => SlowBuffer('string'), bufferMaxSizeMsg);
assert.throws(() => SlowBuffer(Infinity), bufferMaxSizeMsg);
assert.throws(() => SlowBuffer(-1), bufferMaxSizeMsg);
assert.throws(() => SlowBuffer(buffer.kMaxLength + 1), bufferMaxSizeMsg);