A verified unverified-consensus should be renamed to cached-consensus
If Tor with a fresh $DATA_DIR gets a consensus and cannot verify, Tor writes it as $DATA_DIR/unverified-consensus. If Tor then is restarted and suddenly can verify unverified-consensus for whatever reason, Tor will start using it and never write a cached-consensus. While this doesn't cause Tor to misbehave AFAICT, the name of unverified-consensus is misleading since it in fact isn't unverified any longer.
Steps to reproduce:
- rm $DATA_DIR/*-consensus
- date --set="Jan 1 00:00:00 UTC 2013" # or whenever all current authority certs are expired
- start tor
- verify that Tor is not working and that you got $DATA_DIR/unverified-consensus
- stop tor
- set correct system time
- start tor
- verify that Tor is working and that there's no $DATA_DIR/cached-consensus, only $DATA_DIR/unverified-consensus