/// 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 ch15/15.4/15.4.4/15.4.4.15/15.4.4.15-4-6.js * @description Array.prototype.lastIndexOf returns -1 if 'length' is 0 (subclassed Array, length overridden with obj with valueOf) */ function testcase() { var i = Array.prototype.lastIndexOf.call({length: { valueOf: function () { return 0;}}}, 1); if (i === -1) { return true; } } runTestCase(testcase);