/// 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. /** * @path ch15/15.5/15.5.4/15.5.4.20/15.5.4.20-2-40.js * @description String.prototype.trim - 'this' is an object that has an own toString method that returns an object and valueOf method that returns a primitive value */ function testcase() { var toStringAccessed = false; var valueOfAccessed = false; var obj = { toString: function () { toStringAccessed = true; return {}; }, valueOf: function () { valueOfAccessed = true; return "abc"; } }; return (String.prototype.trim.call(obj) === "abc") && valueOfAccessed && toStringAccessed; } runTestCase(testcase);