//-------------------------------------------------------------------------------------------------------

// Copyright (C) Microsoft. All rights reserved.

// Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.

//-------------------------------------------------------------------------------------------------------

function write(args)

{

if(typeof(WScript) == "undefined")

print(args);

else

WScript.Echo(args);

}

function TestWithProto(proto)

{

function Construct() {}

Construct.prototype = proto;

var derived = new Construct();

for(var k=0; k < 3; k++)

{

derived["p"+k] = k + 0.3;

}

function TestForInObjectWithProto()

{

for(var p in derived)

{

write(p);

}

}

write("Scenario: Testing forin on object with prototype");

TestForInObjectWithProto();

// Make a change to the prototype object

if (proto && proto.hasOwnProperty("a")) {

delete (proto.a);

}

write("Scenario: Testing forin on object with prototype after changing prototype");

TestForInObjectWithProto();

}

TestWithProto({

a: 0.27, c: 0.12, g: 0.12, t: 0.23

});

TestWithProto(null);

TestWithProto(undefined);