/// 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-10.js | |
* @description delete operator returns true for property (stringify) defined on built-in object (JSON) | |
*/ | |
function testcase() { | |
try { | |
var o = JSON.stringify; | |
var desc; | |
try { | |
desc = Object.getOwnPropertyDescriptor(JSON, 'stringify') | |
} | |
catch (e) { | |
}; | |
var d = delete JSON.stringify; | |
if (d === true && JSON.stringify === undefined) { | |
return true; | |
} | |
} finally { | |
if (desc) Object.defineProperty(JSON, 'stringify', desc) | |
else JSON.stringify = o /* this branch messes up the attributes */; | |
} | |
} | |
runTestCase(testcase); |