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29 lines
907 B
JavaScript
29 lines
907 B
JavaScript
// Copyright (c) 2012 Ecma International. 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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es5id: 15.2.3.6-4-172
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description: >
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Object.defineProperty - 'O' is an Array, 'name' is the length
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property of 'O', the [[Value]] field of 'desc' is less than value
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of the length property, test the [[Configurable]] attribute of
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own data property with large index named in 'O' that overrides an
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inherited data property can stop deleting index named properties
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(15.4.5.1 step 3.l.ii)
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---*/
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var arrObj = [0, 1];
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assert.throws(TypeError, function() {
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Object.defineProperty(arrObj, "1", {
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configurable: false
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});
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Array.prototype[1] = 2;
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Object.defineProperty(arrObj, "length", {
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value: 1
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});
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});
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assert.sameValue(arrObj.length, 2, 'arrObj.length');
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assert(arrObj.hasOwnProperty("1"), 'arrObj.hasOwnProperty("1") !== true');
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