// Copyright (c) 2012 Ecma International. All rights reserved. // Ecma International makes this code available under the terms and conditions set // forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the // "Use Terms"). Any redistribution of this code must retain the above // copyright and this notice and otherwise comply with the Use Terms. /*--- info: > This test is actually testing the [[Delete]] internal method (8.12.8). Since the language provides no way to directly exercise [[Delete]], the tests are placed here. es5id: 11.4.1-4.a-3 description: > delete operator returns false when deleting a non-configurable data property flags: [noStrict] includes: [runTestCase.js] ---*/ function testcase() { var o = {}; var desc = { value : 1, configurable: false }; // all other attributes default to false Object.defineProperty(o, "foo", desc); // Now, deleting o.foo should fail because [[Configurable]] on foo is false. var d = delete o.foo; if (d === false && o.hasOwnProperty("foo") === true) { return true; } } runTestCase(testcase);