test/built-ins/Array/prototype/filter/15.4.4.20-9-b-3.js


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// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
es5id: 15.4.4.20-9-b-3
description: >
    Array.prototype.filter - deleted properties in step 2 are visible
    here
includes: [runTestCase.js]
---*/

function testcase() {

        function callbackfn(val, idx, obj) {
            return true;
        }
        var obj = { 2: 6.99, 8: 19 };

        Object.defineProperty(obj, "length", {
            get: function () {
                delete obj[2];
                return 10;
            },
            configurable: true
        });

        var newArr = Array.prototype.filter.call(obj, callbackfn);

        return newArr.length === 1 && newArr[0] !== 6.99;
    }
runTestCase(testcase);