blob: 1a80e71009ebe8f8523ceadec97d50592e97880f (
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
|
/// 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 ch15/15.4/15.4.4/15.4.4.14/15.4.4.14-5-21.js
* @description Array.prototype.indexOf - value of 'fromIndex' is an Object, which has an own toString method
*/
function testcase() {
// objects inherit the default valueOf() method from Object
// that simply returns itself. Since the default valueOf() method
// does not return a primitive value, ES next tries to convert the object
// to a number by calling its toString() method and converting the
// resulting string to a number.
var fromIndex = {
toString: function () {
return '1';
}
};
return [0, true].indexOf(true, fromIndex) === 1;
}
runTestCase(testcase);
|
