assertNull("test-group must not exist", mgr.getAuthorizable("test-group"));
assertNull("test-user-a must not exist", mgr.getAuthorizable("test-user-a"));
JcrPackage pack = packMgr.upload(getStream("testpackages/group_with_a.zip"), false);
assertNotNull(pack);
pack.install(getDefaultOptions());
// check if group exists
Group grp = (Group) mgr.getAuthorizable("test-group");
assertNotNull("test-group must exist", grp);
User userA = (User) mgr.getAuthorizable("test-user-a");