// Copyright (c) 2012 Ecma International. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- esid: sec-array.prototype.lastindexof description: > Array.prototype.lastIndexOf - 'length' is an inherited data property on an Array-like object ---*/ var proto = { length: 2 }; var Con = function() {}; Con.prototype = proto; var child = new Con(); child[1] = "x"; child[2] = "y"; assert.sameValue(Array.prototype.lastIndexOf.call(child, "x"), 1, 'Array.prototype.lastIndexOf.call(child, "x")'); assert.sameValue(Array.prototype.lastIndexOf.call(child, "y"), -1, 'Array.prototype.lastIndexOf.call(child, "y")'); reportCompare(0, 0);