Two nets for the same failure: an artifact that fails to parse becomes opaque content, so the record is simply absent and nothing reports it.

TestAwkwardArtifactsSurviveIngest feeds shapes real repositories contain — empty C card, empty J value, empty T value, a titled technote, a forum post with no N card — through parse AND fold, asserting the row lands. Reverting the tokenizer fix fails all three empty-token cases, so the net catches what actually happened.

TestCorpusParity compares a built index against fossil's own tables and is opt-in via QUARRY_PARITY, since the corpora are hundreds of megabytes. Known differences are listed individually with reasons, so anything else fails rather than being tolerated.

It found one on its first run against libfossil: a wiki-tag-propagation-test tag that looks like a page name but is a tag applied to the FIXMEs artifacts. quarry was right and the ground-truth query could not tell the difference — recorded as such. check-in: 86b845671d user: dmestas tags: trunk