/// 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. | |
/** | |
* 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. | |
* | |
* @path ch11/11.4/11.4.1/11.4.1-4.a-3.js | |
* @description delete operator returns false when deleting a non-configurable data property | |
*/ | |
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); |