mirror of https://github.com/tc39/test262.git
44 lines
1.5 KiB
JavaScript
44 lines
1.5 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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info: >
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Step 4 of defineProperty calls the [[DefineOwnProperty]] internal method
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of O to define the property. For non-configurable properties, step 11.a.ii
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of [[DefineOwnProperty]] permits setting a getter if absent.
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es5id: 15.2.3.6-4-21
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description: >
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Object.defineProperty permits setting a getter (if absent) of
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non-configurable accessor properties(8.12.9 step 11.a.ii)
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includes: [runTestCase.js]
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---*/
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function testcase() {
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var o = {};
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// create an accessor property; all other attributes default to false.
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// dummy setter
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var setter = function (x) {}
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var d1 = { set: setter };
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Object.defineProperty(o, "foo", d1);
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// now, trying to set the getter should succeed even though [[Configurable]]
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// on the original property will be false. Existing values of need to be preserved.
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var getter = undefined;
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var desc = { get: getter };
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Object.defineProperty(o, "foo", desc);
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var d2 = Object.getOwnPropertyDescriptor(o, "foo");
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if (d2.get === getter &&
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d2.set === setter &&
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d2.configurable === false &&
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d2.enumerable === false) {
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return true;
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}
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}
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runTestCase(testcase);
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