js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-9-6.js


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

// 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
es5id: 15.4.4.20-9-6
description: >
    Array.prototype.filter visits deleted element in array after the
    call when same index is also present in prototype
---*/

function callbackfn(val, idx, obj)
{
  delete srcArr[2];
  delete srcArr[4];
  if (val > 0)
    return true;
  else
    return false;
}

Array.prototype[4] = 5;
var srcArr = [1, 2, 3, 4, 5];
var resArr = srcArr.filter(callbackfn);
delete Array.prototype[4];

// only one element deleted
assert.sameValue(resArr.length, 4, 'resArr.length');
assert.sameValue(resArr[0], 1, 'resArr[0]');
assert.sameValue(resArr[3], 5, 'resArr[3]');

reportCompare(0, 0);