fix: close file properly in indexer_dbm.py:save_index() Fix this error found in debug logs of gentoo packaging of round 2.2.0. /roundup/backends/indexer_dbm.py:253: ResourceWarning: unclosed file <_io.BufferedWriter name='test-index/indexes/index.db-'> open(self.indexdb+'-', 'wb').write(zlib.compress(marshal.dumps(dbfil))) Also added test that calls save_index(), reloads the index and tests that the original item. I am not sure how Gentoo hit this But they were missing a number of backends. So it's possible that indexer_dbm.py is not getting fully tested depending on what is installed on the system. Codecov from CI didnt show indexer_dbm.py:save_index() being covered.

#!/usr/bin/env python3
import sys
import roundup

from roundup.demo import main

sys.exit(main())