Here are some trick using your notepad to test your antivirus. Firstly, Open notepad and paste this

X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*

Then save it as eicar.com. Your Anti-virus will then either not let you save it of when you have saved it will remove it for you. Dont worry about it. Your pc not crash. European Institute for Computer Anti-virus Research (EICAR) have got people to program Anti-Virus to recognise this as a threat (even tough its completely harmless). You can read more about this trick here

source : http://www.bloggeraz.com/test-your-antivirus-working-or-not/