# Gemfile
group :test do
  gem 'database_cleaner-mongoid'
end

# Only delete the "users" collection.
DatabaseCleaner[:mongoid].strategy = [:deletion, only: ["users"]]
# Delete all collections except the "users" collection.
DatabaseCleaner[:mongoid].strategy = [:deletion, except: ["users"]]

# Redis URI string:
DatabaseCleaner[:mongoid].db = :logs
# Back to default:
DatabaseCleaner[:mongoid].db = :default
# Multiple Mongoid databases can be specified:
DatabaseCleaner[:mongoid, db: :default]
DatabaseCleaner[:mongoid, db: :shard_1]
DatabaseCleaner[:mongoid, db: :shard_2]