The redaction check criteria and test corpus are published here:
https://github.com/abyo-software/redaction-check-corpus (CC0 1.0)
That repository is the one to use. It carries the same criteria and generator plus the documents that cannot be generated — real files redacted with Acrobat and with abyo PDF Editor — and is kept in step with the implementations.
This repository was created at the same time by mistake and holds nothing the other does not. It will be removed.