blob: 5a7bcdc88e0966526560c17afd1e6435a9f39981 (
plain)
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
|
/// Copyright (c) 2012 Ecma International. All rights reserved.
/// Ecma International makes this code available under the terms and conditions set
/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the
/// "Use Terms"). Any redistribution of this code must retain the above
/// copyright and this notice and otherwise comply with the Use Terms.
/**
* @path ch15/15.4/15.4.4/15.4.4.15/15.4.4.15-8-a-18.js
* @description Array.prototype.lastIndexOf - decreasing length of array with prototype property causes prototype index property to be visited
*/
function testcase() {
var arr = [0, 1, 2, 3, 4];
try {
Object.defineProperty(Array.prototype, "2", {
get: function () {
return "prototype";
},
configurable: true
});
Object.defineProperty(arr, "3", {
get: function () {
arr.length = 2;
return 1;
},
configurable: true
});
return 2 === arr.lastIndexOf("prototype");
} finally {
delete Array.prototype[2];
}
}
runTestCase(testcase);
|