How should I test Clam Anti-Virus?
The easiest way would be to us an EICAR test file. Create a text file and add in the following code:
X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*
More information here
download the EICAR test file from www.eicar.org and scan it. it was made exactly for this purpose
You could try to mail the test virus file see http://www.eicar.org/86-0-Intended-use.html