js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-9-c-i-11.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
33
34
35
36
37
38
39

// 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-c-i-11
description: >
    Array.prototype.filter - element to be retrieved is own accessor
    property that overrides an inherited data property on an
    Array-like object
---*/

function callbackfn(val, idx, obj) {
  return idx === 0 && val === 11;
}

var proto = {
  0: 5,
  1: 6
};

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

var child = new Con();
child.length = 10;

Object.defineProperty(child, "0", {
  get: function() {
    return 11;
  },
  configurable: true
});
var newArr = Array.prototype.filter.call(child, callbackfn);

assert.sameValue(newArr.length, 1, 'newArr.length');
assert.sameValue(newArr[0], 11, 'newArr[0]');

reportCompare(0, 0);