Open Notepad and copy the Code given below.
It is a standard text developed by the European Institute for Computer Anti-virus Research (EICAR). Every Anti-Virus is programmed to load this file as a virus.
Save as this file by checkantivirus.com
It is not necessary you save this file by given name but use only this extension..
After some seconds saving this file, your Anti-Virus should come with the message that this file is infected with virus asking permission for its deletion/clean.
This file is secure and it is not going to any infect in your system.
If your antivirus remove this file then it is doing work properly otherwise you update your antivirus