mirror of https://github.com/tc39/test262.git
29 lines
1.1 KiB
JavaScript
29 lines
1.1 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: 15.2.3.6-4-171
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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 an
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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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includes: [runTestCase.js]
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---*/
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function testcase() {
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var arrObj = [0, 1];
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try {
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Array.prototype[1] = 2; // Not setting 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.defineProperty(arrObj, "length", {
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value: 1
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});
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return arrObj.length === 1 && !arrObj.hasOwnProperty("1");
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} finally {
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delete Array.prototype[1];
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}
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}
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runTestCase(testcase);
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