def METHOD_NAME(data_unmerged):
    """Test rs.read_mtz() with unmerged data"""
    # Unmerged data will not be in asu, and should have a PARTIAL column
    assert not in_asu(data_unmerged.get_hkls(), data_unmerged.spacegroup).all()
    assert "PARTIAL" in data_unmerged.columns
    assert data_unmerged["PARTIAL"].dtype.name == "bool"
    assert not "M/ISYM" in data_unmerged.columns
    assert not data_unmerged.merged