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38 changes: 38 additions & 0 deletions test/js/node/test/sequential/test-buffer-creation-regression.js
Original file line number Diff line number Diff line change
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'use strict';

const common = require('../common');
const assert = require('assert');

function test(arrayBuffer, offset, length) {
const uint8Array = new Uint8Array(arrayBuffer, offset, length);
for (let i = 0; i < length; i += 1) {
uint8Array[i] = 1;
}

const buffer = Buffer.from(arrayBuffer, offset, length);
for (let i = 0; i < length; i += 1) {
assert.strictEqual(buffer[i], 1);
}
}

const acceptableOOMErrors = [
'Array buffer allocation failed',
'Invalid array buffer length',
'length too large: 4294968296',
];

const length = 1000;
const offset = 4294967296; /* 1 << 32 */
const size = offset + length;
let arrayBuffer;

try {
arrayBuffer = new ArrayBuffer(size);
} catch (e) {
if (e instanceof RangeError && acceptableOOMErrors.includes(e.message))
common.skip(`Unable to allocate ${size} bytes for ArrayBuffer`);
throw e;
}

test(200, 50, 100);
test(arrayBuffer, offset, length);