Adapt sorting unit tests for new default.

Change-Id: I9885e2712753390f0597233c404ab80c0ad2b537
Reviewed-on: https://gerrit.libreoffice.org/11904
Reviewed-by: Muthu Subramanian K <muthusuba@gmail.com>
Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Eike Rathke <erack@redhat.com>