JSTests/test262/test/built-ins/Function/length/S15.3.5.1_A4_T1.js

// 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 has the attributes { DontEnum }
es5id: 15.3.5.1_A4_T1
description: >
    Checking if enumerating the length property of
    Function("arg1,arg2,arg3", null) fails
---*/

var f = new Function("arg1,arg2,arg3", null);

//CHECK#1
if (!(f.hasOwnProperty('length'))) {
  $ERROR('#1: the function has length property.');
}

for(var key in f)
  if(key=="length")
      var lengthenumed=true;
      
//CHECK#2
if (lengthenumed) {
  $ERROR('#2: the length property has the attributes { DontEnum }');
}