test262/test/built-ins/isNaN/S15.1.2.4_A2.3.js

17 lines
536 B
JavaScript

// Copyright 2009 the Sputnik authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
info: The length property of isNaN has the attribute ReadOnly
es5id: 15.1.2.4_A2.3
description: Checking if varying the length property fails
includes: [propertyHelper.js]
---*/
//CHECK#1
var x = isNaN.length;
verifyNotWritable(isNaN, "length", null, Infinity);
if (isNaN.length !== x) {
$ERROR('#1: x = isNaN.length; isNaN.length = Infinity; isNaN.length === x. Actual: ' + (isNaN.length));
}