Tests are not working

It seems, there is not automatic testing for dune-foamgrid. So, I'm not sure whether the test where running before. But now, all tests fail, due to a gridcheck-error:

GridError [operator():/opt/sources/dune/dune-grid/dune/grid/test/checkidset.hh:56]: IdSet is not injective

This means, there are two entities with the same id, that are different, i.e., at least have different center coordinate.