mirror of https://github.com/tc39/test262.git
40 lines
1.4 KiB
JavaScript
40 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: 15.2.3.6-4-364
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description: >
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ES5 Attributes - fail to update [[Writable]] attribute of data
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property ([[Writable]] is false, [[Enumerable]] is true,
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[[Configurable]] is false) to different value
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includes: [runTestCase.js]
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---*/
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function testcase() {
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var obj = {};
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Object.defineProperty(obj, "prop", {
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value: 2010,
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writable: false,
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enumerable: true,
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configurable: false
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});
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var propertyDefineCorrect = obj.hasOwnProperty("prop");
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var desc1 = Object.getOwnPropertyDescriptor(obj, "prop");
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try {
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Object.defineProperty(obj, "prop", {
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writable: true
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});
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return false;
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} catch (e) {
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var desc2 = Object.getOwnPropertyDescriptor(obj, "prop");
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return propertyDefineCorrect && desc1.writable === false && obj.prop === 2010 && desc2.writable === false && e instanceof TypeError;
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}
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}
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runTestCase(testcase);
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