def METHOD_NAME(self):
    from GangaCore.GPI import LHCbDataset
    # test behaviour with files on the grid
    LFN_DATA = ['LFN:/lhcb/LHCb/Collision17/DIMUON.DST/00067804/0003/00067804_00030224_1.dimuon.dst',
                'LFN:/lhcb/LHCb/Collision17/DIMUON.DST/00067804/0003/00067804_00030520_1.dimuon.dst']
    ds = LHCbDataset(LFN_DATA)
    assert len(list(ds.getReplicas().keys())) == 2
    assert ds.getCatalog()