Unable to override window.parent

[rvignesh89]

Windows 8.1
IE 11.0

I have a curious case here. In one of my tests I want to spy on a particular function in the parent document. Since my tests don't load the parent document I instantiate it manually like below.

 parent = {hideBar:function(){}};
 spyOn(parent,'hideBar');

However when I run the tests I'm getting the following error,

Error: hideBar() method does not exist

However, when I try to debug IE I don't get this error. Some information on why this happens would be useful.