Hi gauravm, I am a little confused as to what part of your application is created in LabVIEW. If you mean the software interface you created is in LabVIEW, then you can just use it as a subVI inside of your LabVIEW test application. If the interface was created in a different environment, then you can use the Call Library Node along with your interface exported as a DLL.
Hope this helps! Jeremy L. National Instruments
