How to use in tests with Rails' transactional tests enabled?

[Envek]

I want to have ability to use single writable connection in test environment even within with_readonly blocks.

Problem

I prefer to use Rails use_transactional_tests as it greatly speed ups tests and I don't need to worry about data cleanup.

However, it doesn't work with switch_point gem as queries run within with_readonly blocks doesn't see test data as it exists only within transactions that won't be commited.

See #4 for details.

Environment

switch_point 0.8.0
rails 5.2.3
rspec 3.9.0
rspec-rails-4.0.1

Configuration:

RSpec.configure do |config|
  config.use_transactional_fixtures = true
end

SwitchPoint.configure do |config|
  config.auto_writable = true
  raksul_config = {
      readonly: :"#{Rails.env}_readonly",
      writable: :"#{Rails.env}"
  }
  config.define_switch_point :raksul, raksul_config
end
SwitchPoint::writable!(:raksul)

Workaround

Don't declare readonly database in test environment:

 SwitchPoint.configure do |config|
   config.auto_writable = true
   raksul_config = {
-      readonly: :"#{Rails.env}_readonly",
+      readonly: (:"#{Rails.env}_readonly" unless Rails.env.test?),
       writable: :"#{Rails.env}"
-  }
+  }.compact
   config.define_switch_point :raksul, raksul_config
 end
 SwitchPoint::writable!(:raksul)

Is there any better solution?