Added test case

git-svn-id: svn://svn.openvpms.org/openvpms/vpms/trunk@6159 9e4fa352-aafb-0310-9071-df624684024b
Changes for OVPMS-1511 Stock export and import

git-svn-id: svn://svn.openvpms.org/openvpms/vpms/trunk@6172 9e4fa352-aafb-0310-9071-df624684024b