How to activate DerbyStore during unit test ??

[Alvin Henrick]

 Hi All , I wan't to run the unit test like end to end in debug mode. I wan't 
to utilize in memory DerbyStore instead MemStore ? 
              During test run If I specify JVM parameter 
-Dtajo.catalog.store.class=org.apache.tajo.catalog.store.DerbyStore will this 
work ?

Thanks!
Warm Regards,
Alvin.