1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/tests/test262/ch11/11.4/11.4.1/11.4.1-4.a-10.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,33 @@
1.4 +/// Copyright (c) 2012 Ecma International. All rights reserved.
1.5 +/// Ecma International makes this code available under the terms and conditions set
1.6 +/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the
1.7 +/// "Use Terms"). Any redistribution of this code must retain the above
1.8 +/// copyright and this notice and otherwise comply with the Use Terms.
1.9 +/**
1.10 + * This test is actually testing the [[Delete]] internal method (8.12.8). Since the
1.11 + * language provides no way to directly exercise [[Delete]], the tests are placed here.
1.12 + *
1.13 + * @path ch11/11.4/11.4.1/11.4.1-4.a-10.js
1.14 + * @description delete operator returns true for property (stringify) defined on built-in object (JSON)
1.15 + */
1.16 +
1.17 +
1.18 +function testcase() {
1.19 + try {
1.20 + var o = JSON.stringify;
1.21 + var desc;
1.22 + try {
1.23 + desc = Object.getOwnPropertyDescriptor(JSON, 'stringify')
1.24 + }
1.25 + catch (e) {
1.26 + };
1.27 + var d = delete JSON.stringify;
1.28 + if (d === true && JSON.stringify === undefined) {
1.29 + return true;
1.30 + }
1.31 + } finally {
1.32 + if (desc) Object.defineProperty(JSON, 'stringify', desc)
1.33 + else JSON.stringify = o /* this branch messes up the attributes */;
1.34 + }
1.35 + }
1.36 +runTestCase(testcase);
