mirror of https://github.com/tc39/test262.git
41 lines
1.4 KiB
JavaScript
41 lines
1.4 KiB
JavaScript
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// Copyright (c) 2012 Ecma International. All rights reserved.
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// Ecma International makes this code available under the terms and conditions set
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// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the
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// "Use Terms"). Any redistribution of this code must retain the above
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// copyright and this notice and otherwise comply with the Use Terms.
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/*---
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es5id: 15.2.3.6-4-192
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description: >
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Object.defineProperty - 'O' is an Array, 'name' is an array index
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named property, 'name' is own data property that overrides an
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inherited data property, test TypeError is thrown on updating the
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[[Configurable]] attribute from false to true (15.4.5.1 step 4.c)
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includes: [runTestCase.js]
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---*/
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function testcase() {
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try {
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Object.defineProperty(Array.prototype, "0", {
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value: 11,
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configurable: true
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});
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var arrObj = [];
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Object.defineProperty(arrObj, "0", {
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value: 12,
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configurable: false
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});
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Object.defineProperty(arrObj, "0", {
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configurable: true
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});
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return false;
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} catch (e) {
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return e instanceof TypeError && Array.prototype[0] === 11 && arrObj[0] === 12;
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} finally {
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delete Array.prototype[0];
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}
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}
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runTestCase(testcase);
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