A pesquisa rápida no Google parece mostrar que o Samba vem com uma suíte de testes bastante abrangente.
De link :
The Samba4 testsuite consists of the following - basic components: - smbtorture ad-hoc tests - smbtorture individual (RAW) tests - levelscanners - smbclient - gentest - locktest - locktest2 - masktest
"A levelscanner is a program that tries every subcall and information level of a CIFS transaction requestsuch as TRANS2"