I checked that `db_version` in `metadata` table is `19`, and run the keyserver. After each test I removed part, or all of the rows in the `search` table and changed `db_version` in `metadata` table
to `19`. I checked that the processed messages appear in the `search` table. I checked that no messages of type 0 or 20 are skipped (I artificially added some messages of type 20 to my `messages`
talbe)