What is the data format of the binary files in tests?

[XAMPPRocky]

Im assuming that the files like encode_decode/01_data.bin are just the binary data representing a NDEF message with a single NDEF record containing the payload that matches what is described in encode_decode/01_input.yaml?

I am running into trouble with that assumption, getting invalid payload errors with the library I'm using, but before I file an issue upstream with the library I want to make sure whether that assumption is correct.

[CZDanol]

It's the whole deal specified in https://specs.openprinttag.org/#/nfc_data_format, including the CC record, NDEF TLV and sometimes even a leading NDEF URI record.

That's what you get from the reference Python implementation - see https://specs.openprinttag.org/#/examples