def METHOD_NAME(tmp_path, fname):
    """Test round trip reading/writing of fine calibration .dat file."""
    temp_fname = tmp_path / "fine_cal_temp.dat"
    # Load fine calibration file
    fine_cal_dict = read_fine_calibration(fname)
    # Save temp version of fine calibration file
    write_fine_calibration(temp_fname, fine_cal_dict)
    fine_cal_dict_reload = read_fine_calibration(temp_fname)
    # Load temp version of fine calibration file and compare hashes
    assert object_diff(fine_cal_dict, fine_cal_dict_reload) == ""