tests/__init__.py keeps a run offline, its scratch under tmp/ and its
installer cache its own, but only discover -s tests -t . imported it.
discover tests ran with RETROBIOS_OFFLINE unset, scratch on the /tmp
tmpfs and the user's real installer cache, the setting in which e2e
fixtures had written into the shared .cache/large. Every test module now
imports the package first, and a test fails on a module that does not.
test_verify_listing.py took its line with the previous commit.
RomM's verify_file_hashes compares the size, then md5, sha1 or crc. We
compared md5 alone, so a fixture entry with one mistyped hash was left out
of the pack RomM would accept it from. The rule is declared in romm.yml
and read by verify, the builder and the manifest.
Abdessamad Derraz