def METHOD_NAME(self, iarray):
    oarray = bf.ndarray(shape=iarray.shape, dtype='ci8', space='cuda')
    oarray_known = bf.ndarray([[(0, 1), (2, 3)],
                               [(4, 5), (6, 7)],
                               [(-8, -7), (-6, -5)]],
                              dtype='ci8')
    bf.unpack(iarray.copy(space='cuda'), oarray)
    oarray = oarray.copy(space='system')
    np.testing.assert_equal(oarray, oarray_known)