ChakraCore/test/Object/NumericPropertyIsEnumerable.js

//-------------------------------------------------------------------------------------------------------
// Copyright (C) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.
//-------------------------------------------------------------------------------------------------------

function verify(act,exp,msg)
{
    if(act!=exp)
        WScript.Echo(act + " " + msg);
    else
        WScript.Echo("pass");
};

var myobj = { a: "apple", 101: 1 }

verify (myobj.propertyIsEnumerable('a'), true, "property should be enumerable");
verify (myobj.propertyIsEnumerable(101), true, "numeric property should be enumerable");
verify (myobj.propertyIsEnumerable("101"), true, "numeric property should be enumerable");
verify (myobj.propertyIsEnumerable("10"), false, "non-existent numeric property should not be enumerable");

for (o in myobj)
{
    verify (myobj.propertyIsEnumerable(o), true, "for...in loop propertyIsEnumerable enum testing");
}