js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-9-c-i-21.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.

/*---
esid: sec-array.prototype.filter
description: >
    Array.prototype.filter - element to be retrieved is inherited
    accessor property without a get function on an Array-like object
---*/

function callbackfn(val, idx, obj) {
  return val === undefined && idx === 1;
}

var proto = {};
Object.defineProperty(proto, "1", {
  set: function() {},
  configurable: true
});

var Con = function() {};
Con.prototype = proto;

var child = new Con();
child.length = 2;
var newArr = Array.prototype.filter.call(child, callbackfn);

assert.sameValue(newArr.length, 1, 'newArr.length');
assert.sameValue(newArr[0], undefined, 'newArr[0]');

reportCompare(0, 0);