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28 lines
1.0 KiB
JavaScript
28 lines
1.0 KiB
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: 15.2.3.7-6-a-167
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description: >
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Object.defineProperties - 'O' is an Array, 'P' 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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inherited data property with large index named in 'O' can't stop
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deleting index named properties (15.4.5.1 step 3.l.ii)
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---*/
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var arr = [0, 1];
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Array.prototype[1] = 2; //we are not allowed to set the [[Configurable]] attribute of property "1" to false here, since Array.prototype is a global object, and non-configurbale property can't revert to configurable
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Object.defineProperties(arr, {
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length: {
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value: 1
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}
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});
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assert.sameValue(arr.length, 1, 'arr.length');
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assert.sameValue(arr.hasOwnProperty("1"), false, 'arr.hasOwnProperty("1")');
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assert.sameValue(arr[0], 0, 'arr[0]');
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assert.sameValue(Array.prototype[1], 2, 'Array.prototype[1]');
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