Add a new test to show persistence in file (on contrary to in memory databases)
Add a new test to show persistence in file (on contrary to in memory databases)

hongshibao/SQLiteCpp,hongshibao/SQLiteCpp,SRombauts/SQLiteCpp,sergiosvieira/SQLiteCpp,sergiosvieira/SQLiteCpp,sndnvaps/SQLiteCpp,SproutOrc/SQLiteCpp,sergiosvieira/SQLiteCpp,SRombauts/SQLiteCpp,SRombauts/SQLiteCpp,sndnvaps/SQLiteCpp,mc-server/SQLiteCpp,mc-server/SQLiteCpp,hongshibao/SQLiteCpp,stelalae/SQLiteCpp,mc-server/SQLiteCpp,SproutOrc/SQLiteCpp,sndnvaps/SQLiteCpp,SproutOrc/SQLiteCpp