[tests] Fix checkMountedDatabase
[tests] Fix checkMountedDatabase

thanks for catching this @garyb!

drostron/slamdata,mossprescott/slamdata,natefaubion/slamdata,shujuwen2013/slamdata,jonsterling/slamdata,beckyconning/slamdata,mossprescott/slamdata,beckyconning/slamdata,zeeiyerWork/slamdata,drostron/slamdata,zeeiyerWork/slamdata,natefaubion/slamdata,sellout/slamdata,cryogenian/slamdata,cryogenian/slamdata,natefaubion/slamdata,shujuwen2013/slamdata,sellout/slamdata,jonsterling/slamdata