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
|
// Copyright (c) 2012 Ecma International. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es5id: 15.2.3.7-6-a-172
description: >
Object.defineProperties - 'O' is an Array, 'P' is the length
property of 'O', the [[Value]] field of 'desc' is less than value
of the length property, test the [[Configurable]] attribute of
own accessor property with large index named in 'O' that overrides
inherited data property can stop deleting index named properties
(15.4.5.1 step 3.l.ii)
---*/
var arr = [0, 1];
assert.throws(TypeError, function() {
Object.defineProperty(arr, "1", {
get: function () {
return 2;
},
configurable: false
});
Array.prototype[1] = 3;
Object.defineProperties(arr, {
length: {
value: 1
}
});
});
assert.sameValue(arr.length, 2, 'arr.length');
assert(arr.hasOwnProperty("1"), 'arr.hasOwnProperty("1") !== true');
assert.sameValue(arr[0], 0, 'arr[0]');
assert.sameValue(arr[1], 2, 'arr[1]');
|
