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// 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.
/*---
description: >
Array.prototype.map - decreasing length of array causes index
property not to be visited
includes: [runTestCase.js]
---*/
function testcase() {
function callbackfn(val, idx, obj) {
return idx === 3 && typeof val === "undefined";
}
var arr = [0, 1, 2, "last"];
Object.defineProperty(arr, "0", {
get: function () {
arr.length = 3;
return 0;
},
configurable: true
});
var testResult = arr.map(callbackfn);
return typeof testResult[3] === "undefined";
}
runTestCase(testcase);
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