also compare metadata files for BE

        subprocess.run(cmd)

def is_be_to_reference(dut_file: Path):

    assert dut_file.parent == DUT_PATH

    # TODO: handle .wav files differently

    ref_file = REF_PATH.joinpath(dut_file.name)

    return filecmp.cmp(ref_file, dut_file)

def files_equal(dut_file, ref_file):

    return filecmp.cmp(dut_file, ref_file)

def run_check(

        add_option_list=options + [str(f) for f in metadata],

    )

    if not is_ref_creation and not is_be_to_reference(dut_bitstream):

    ref_bitstream = REF_PATH.joinpath(dut_bitstream.name)

    if not is_ref_creation and not files_equal(dut_bitstream, ref_bitstream):

        pytest.fail("Bitstream file differs from reference")

    dut_bitstream_to_decoder = dut_bitstream

    decoder_frontend.run(output_mode, sampling_rate, dut_bitstream_to_decoder, dut_output)

    # TODO: also compare metadata if present

    if not is_ref_creation and not is_be_to_reference(dut_output):

    # NOTE: file comparison is done via filecmp which compares the whole file, including the header for wav files

    #       this should not be a problem as both the reference and the tdut output was generated by the codec, so 

    #       diverging headers should also indicate a problem - still, keep in mind if something bogus happens

    if not is_ref_creation:

        ref_output = REF_PATH.joinpath(dut_output.name)

        if not files_equal(dut_output, ref_output):

            pytest.fail("Decoder output differs from reference")

        for md in metadata:

            md_suffix = "".join(md.suffixes)

            dut_md = DUT_PATH.joinpath(dut_output.with_suffix(md_suffix).name)

            ref_md = REF_PATH.joinpath(dut_output.with_suffix(md_suffix).name)

            if not files_equal(dut_md, ref_md):

                pytest.fail("Metadata file {md.name} differs from reference")