Comment 3 for bug 1537063

"If we change something like galera that is used by openstack but we don't check openstack how will we know if there are regressions"

I suppose that such problems are not a subject for unit tests. If I change something in galera module, then the only goal of unit tests is to check that functionality of puppet classes/function/resources of galera module is not broken, that's it. Any composition/integration layer issues (like the one described above) will be caught by noop tests.