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52 lines
1.3 KiB
JavaScript
52 lines
1.3 KiB
JavaScript
// Copyright (C) 2016 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-dataview-buffer-byteoffset-bytelength
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description: >
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The new instance is extensible
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info: |
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24.2.2.1 DataView (buffer, byteOffset, byteLength )
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...
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12. Let O be ? OrdinaryCreateFromConstructor(NewTarget, "%DataViewPrototype%",
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« [[DataView]], [[ViewedArrayBuffer]], [[ByteLength]], [[ByteOffset]] »).
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...
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17. Return O.
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9.1.13 OrdinaryCreateFromConstructor ( constructor, intrinsicDefaultProto [ ,
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internalSlotsList ] )
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...
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3. Return ObjectCreate(proto, internalSlotsList).
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9.1.12 ObjectCreate (proto [ , internalSlotsList ])
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...
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5. Set the [[Extensible]] internal slot of obj to true.
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...
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includes: [propertyHelper.js]
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---*/
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var buffer = new ArrayBuffer(8);
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var sample = new DataView(buffer, 0);
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assert(Object.isExtensible(sample));
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Object.defineProperty(sample, 'baz', {});
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assert(sample.hasOwnProperty('baz'), 'confirms extensibility adding a new property');
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Object.defineProperty(sample, 'foo', {
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value: 'bar',
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writable: true,
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configurable: true,
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enumerable: false,
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});
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verifyProperty(sample, 'foo', {
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value: 'bar',
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writable: true,
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configurable: true,
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enumerable: false,
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});
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