Database cleaner with multiple DBs

Comienza con la configuración de DatabaseCleaner[:sequel] en el spec helper proporcionado y la conexión del modelo Sequel para CameraActivity; después, reproduce el fallo haciendo que ambas URL de base de datos apunten a la misma base de datos. Revisa la suite de pruebas existente para determinar cómo se detectan y configuran varias bases de datos Sequel activas; se considera terminado cuando la configuración de pruebas limpia las conexiones de base de datos previstas sin el error de ejecución.

I have been using DB cleaner with my only db but now I have 2 of them, and I am getting this error in testing mode as

RuntimeError:
  As you have more than one active sequel database you have to specify the one to use manually!

At first my whole sequel models were using only one db but now i have connected my one model with a separate Db as

class CameraActivity < Sequel::Model(Sequel.connect(ENV['SNAPSHOT_DATABASE_URL'])[:camera_activities])

and in spec helper I have these configurations

# This file is copied to spec/ when you run 'rails generate rspec:install'
ENV["RAILS_ENV"] = 'test'
ENV["DATABASE_URL"] = "postgres://localhost/evercam_tst"
ENV["RACK_ENV"]  = ENV["RAILS_ENV"]
require File.expand_path("../../config/environment", __FILE__)
require 'rspec/rails'
require 'webmock/rspec'
require 'factory_girl'
require 'rack_session_access/capybara'
require "simplecov"
SimpleCov.start

Dir[Rails.root.join("spec/support/**/*.rb")].each { |f| require f }

require 'database_cleaner'
require 'capybara/poltergeist'
require 'simplecov'

SimpleCov.start 'rails'

#Capybara.server_port = 3001
#Capybara.app_host = "http://local.evercam.io:3001"
Capybara.javascript_driver = :poltergeist

RSpec.configure do |config|
  config.infer_spec_type_from_file_location!

  config.filter_run :focus => true
  config.run_all_when_everything_filtered = true

  # Configure factory girl stuff.
  config.include FactoryGirl::Syntax::Methods

  # Configure database cleaner.
  config.before(:suite) do
    WebMock.allow_net_connect!
    DatabaseCleaner[:sequel].strategy = :truncation, {except: %w[spatial_ref_sys]}
    DatabaseCleaner[:sequel].clean_with(:truncation, except: %w[spatial_ref_sys])
  end

  config.before(:each) do
    DatabaseCleaner[:sequel].start
  end

  config.after(:each) do
    DatabaseCleaner[:sequel].clean
  end
end

# Load up factories.
FactoryGirl.find_definitions
```


my other DB is `ENV['SNAPSHOT_DATABASE_URL']` But for testing purposes both DB URLs are directed to one database. How is that possible to tell DB Cleaner to handle that case?