Cryptolocker test suite

I was wondering if anybody knows of a Cryptolocker test tool that I can use to test how vulnerable I am to one of my users actually executing this type of malware.  Leading to another question, is there be some type of malware test suite out there that has benign versions of malware that I can throw at my systems? Not that I don't trust my AV, but I don't really trust my AV. ;-)