domainGroupCacheLoader.initialize();
followedGroupIdsMapper = new GetFollowedGroupIdsForPersonByIdDbMapper();
followedGroupIdsMapper.setEntityManager(getEntityManager());
followerIdsMapper = new GetFollowerPersonIdsForGroupByIdDbMapper();
followerIdsMapper.setEntityManager(getEntityManager());
sut = new AddCachedGroupFollower(followedGroupIdsMapper, followerIdsMapper);
sut.setCache(cache);
sut.setEntityManager(getEntityManager());