def test_multi_dataset_outlier_rejection(test_sg):
    """Test outlier rejection with two datasets."""
    rt1 = flex.reflection_table()
    rt1["intensity"] = flex.double(
        [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 20.0, 400.0, 10.0])
    rt1["variance"] = flex.double(9, 1.0)
    rt1["inverse_scale_factor"] = flex.double(9, 1.0)
    rt1["miller_index"] = flex.miller_index([
        (0, 0, 1),
        (0, 0, 1),
        (0, 0, 1),
        (0, 0, 1),
        (0, 0, 2),
        (0, 0, 2),
        (0, 0, 2),
        (0, 0, 2),
        (0, 0, 3),
    ])
    rt1.set_flags(
        flex.bool(
            [True, False, False, False, False, False, False, False, False]),
        rt1.flags.excluded_for_scaling,
    )
    rt1.set_flags(flex.bool(9, False), rt1.flags.user_excluded_in_scaling)
    rt2 = flex.reflection_table()
    rt2["intensity"] = flex.double([10.0, 20.0, 500.0])
    rt2["variance"] = flex.double(3, 1.0)
    rt2["inverse_scale_factor"] = flex.double(3, 1.0)
    rt2["miller_index"] = flex.miller_index([(0, 0, 23), (0, 0, 1), (0, 0, 2)])
    rt2.set_flags(flex.bool([False, False, False]),
                  rt1.flags.excluded_for_scaling)
    rt2.set_flags(flex.bool(3, False), rt2.flags.user_excluded_in_scaling)
    Ih_table = IhTable([rt1, rt2], test_sg, nblocks=1)
    zmax = 6.0
    outlier_rej = SimpleNormDevOutlierRejection(Ih_table, zmax)
    outlier_rej.run()
    outliers = outlier_rej.final_outlier_arrays
    assert len(outliers) == 2
    assert list(outliers[0]) == [4, 5, 6, 7]
    assert list(outliers[1]) == [1, 2]

    outlier_rej = NormDevOutlierRejection(Ih_table, zmax)
    outlier_rej.run()
    outliers = outlier_rej.final_outlier_arrays
    assert len(outliers) == 2
    assert list(outliers[0]) == [7, 6]
    assert list(outliers[1]) == [1, 2]