personCacheLoader.initialize();
followedPersonIdsMapper = new GetFollowedPersonIdsForPersonByIdDbMapper();
followedPersonIdsMapper.setEntityManager(getEntityManager());
followerIdsMapper = new GetFollowerPersonIdsForPersonByIdDbMapper();
followerIdsMapper.setEntityManager(getEntityManager());
sut = new AddCachedPersonFollower(followedPersonIdsMapper, followerIdsMapper);
sut.setCache(cache);
sut.setEntityManager(getEntityManager());