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js/src/tests/test262/ch11/11.4/11.4.1/11.4.1-4.a-10.js@8bccb770b82d (annotated)

js/src/tests/test262/ch11/11.4/11.4.1/11.4.1-4.a-10.js

Wed, 31 Dec 2014 13:27:57 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 13:27:57 +0100

branch

TOR_BUG_3246

changeset 6

8bccb770b82d

permissions

-rw-r--r--

Ignore runtime configuration files generated during quality assurance.

michael@0	1	/// Copyright (c) 2012 Ecma International. All rights reserved.
michael@0	2	/// Ecma International makes this code available under the terms and conditions set
michael@0	3	/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the
michael@0	4	/// "Use Terms"). Any redistribution of this code must retain the above
michael@0	5	/// copyright and this notice and otherwise comply with the Use Terms.
michael@0	6	/**
michael@0	7	* This test is actually testing the [[Delete]] internal method (8.12.8). Since the
michael@0	8	* language provides no way to directly exercise [[Delete]], the tests are placed here.
michael@0	9	*
michael@0	10	* @path ch11/11.4/11.4.1/11.4.1-4.a-10.js
michael@0	11	* @description delete operator returns true for property (stringify) defined on built-in object (JSON)
michael@0	12	*/
michael@0	13
michael@0	14
michael@0	15	function testcase() {
michael@0	16	try {
michael@0	17	var o = JSON.stringify;
michael@0	18	var desc;
michael@0	19	try {
michael@0	20	desc = Object.getOwnPropertyDescriptor(JSON, 'stringify')
michael@0	21	}
michael@0	22	catch (e) {
michael@0	23	};
michael@0	24	var d = delete JSON.stringify;
michael@0	25	if (d === true && JSON.stringify === undefined) {
michael@0	26	return true;
michael@0	27	}
michael@0	28	} finally {
michael@0	29	if (desc) Object.defineProperty(JSON, 'stringify', desc)
michael@0	30	else JSON.stringify = o /* this branch messes up the attributes */;
michael@0	31	}
michael@0	32	}
michael@0	33	runTestCase(testcase);