@Test
  public void testGetIdsOfHostsWithStatus() {
    List<Guid> hostIds = dao.getIdsOfHostsWithStatus(VDSStatus.Up);
    assertEquals(5, hostIds.size());
    assertTrue(hostIds.containsAll(HOSTS_WITH_UP_STATUS));

    hostIds = dao.getIdsOfHostsWithStatus(VDSStatus.Maintenance);
    assertEquals(0, hostIds.size());
  }