How to check whether the Antivirus works or doesn't work?

Open a Notepad and copy the following code.
X5O!P%@AP[4\PZX 54(P^)7CC)7}$EI CAR-STANDARD-AN TIVIRUS-TEST-FI LE!
$H+H*
Save it as fake-virus.exe
If your Antivirus works properly, the file you saved will be identified as virus
and it will be deleted by your Antivirus. If your antivirus doesn't
work properly,
the file you saved will not be identified as virus.
Therefore, if your file get deleted you can know that your antivirus works
without any trouble.