js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-9-c-iii-1-4.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 - value of returned array element can be
    changed or deleted
---*/

function callbackfn(val, idx, obj) {
  return true;
}

var obj = {
  0: 11,
  1: 9,
  length: 2
};
var newArr = Array.prototype.filter.call(obj, callbackfn);

var tempVal = newArr[1];
delete newArr[1];

assert.notSameValue(tempVal, undefined, 'tempVal');
assert.sameValue(newArr[1], undefined, 'newArr[1]');

reportCompare(0, 0);