mirror of https://github.com/tc39/test262.git
46 lines
1.7 KiB
JavaScript
46 lines
1.7 KiB
JavaScript
// Copyright (C) 2016 the V8 project authors. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
|
|
/*---
|
|
es6id: 24.2.2.1
|
|
esid: sec-dataview-buffer-byteoffset-bytelength
|
|
description: >
|
|
Return new instance from negative lengths
|
|
info: |
|
|
24.2.2.1 DataView (buffer, byteOffset, byteLength )
|
|
|
|
...
|
|
17. Return O.
|
|
---*/
|
|
|
|
var sample;
|
|
var buffer = new ArrayBuffer(2);
|
|
|
|
sample = new DataView(buffer, 0, -1);
|
|
assert.sameValue(sample.byteLength, 0, "sample.byteLength");
|
|
assert.sameValue(sample.byteOffset, 0, "sample.byteOffset");
|
|
assert.sameValue(sample.buffer, buffer);
|
|
assert.sameValue(sample.constructor, DataView);
|
|
assert.sameValue(Object.getPrototypeOf(sample), DataView.prototype);
|
|
|
|
sample = new DataView(buffer, 0, -Infinity);
|
|
assert.sameValue(sample.byteLength, 0, "sample.byteLength");
|
|
assert.sameValue(sample.byteOffset, 0, "sample.byteOffset");
|
|
assert.sameValue(sample.buffer, buffer);
|
|
assert.sameValue(sample.constructor, DataView);
|
|
assert.sameValue(Object.getPrototypeOf(sample), DataView.prototype);
|
|
|
|
sample = new DataView(buffer, 1, -1);
|
|
assert.sameValue(sample.byteLength, 0, "sample.byteLength");
|
|
assert.sameValue(sample.byteOffset, 1, "sample.byteOffset");
|
|
assert.sameValue(sample.buffer, buffer);
|
|
assert.sameValue(sample.constructor, DataView);
|
|
assert.sameValue(Object.getPrototypeOf(sample), DataView.prototype);
|
|
|
|
sample = new DataView(buffer, 2, -Infinity);
|
|
assert.sameValue(sample.byteLength, 0, "sample.byteLength");
|
|
assert.sameValue(sample.byteOffset, 2, "sample.byteOffset");
|
|
assert.sameValue(sample.buffer, buffer);
|
|
assert.sameValue(sample.constructor, DataView);
|
|
assert.sameValue(Object.getPrototypeOf(sample), DataView.prototype);
|