DatabaseCleaner setup doesn't work with SQLite

[janko]

When following persistence setup with ROM in the getting started guide, the database cleaner setup shown doesn't automatically work with SQLite. I know the guides are showing instructions for Postgres, but for simplicity I wanted to use SQLite, and it would be great if everything still worked 👌🏻

Concretely, I have the database URL set to sqlite://db/test.sqlite3 in tests, and I'm getting the following error:

DatabaseCleaner::Safeguard::Error::RemoteDatabaseUrl:
  ENV['DATABASE_URL'] is set to a remote URL. Please refer to https://github.com/DatabaseCleaner/database_cleaner#safeguards

It appears that DatabaseCleaner is falsely detecting the SQLite database URL as "remote", because it doesn't see any localhost or 127.0.0.1, even though it's in fact local.

[komidore64]

See the relevant documentation for DatabaseCleaner.