Port the Junit test in DataSource.java over to CppUnit.
In order to port the test as written in Java the
CRM Database was ported, so add a test for that here as
well.
Change-Id: Ib9ac369e3faaa30207b83368889763f0eb063876
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/169071
Tested-by: Jenkins
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>