Always ensure clean db state when mixing feature and other specs (transaction & truncation dbcleaning strategy) running in a random order

database_cleaner.rb

# spec/support/database_cleaner.rb

def restore_clean_db_state!
  DatabaseCleaner.clean_with :truncation
  # load Rails.root.join('db', 'seeds.rb')
  RSpec.configuration.db_is_dirty = false
end

def start_transaction!
  DatabaseCleaner.strategy = :transaction
  DatabaseCleaner.start
end

def rollback_transaction!
  DatabaseCleaner.clean
end

RSpec.configure do |config|
  config.add_setting :db_is_dirty

  config.before :suite do
    restore_clean_db_state!
  end

  config.before :each do |example|
    if example.metadata[:type] == :feature
      restore_clean_db_state!
    else
      if RSpec.configuration.db_is_dirty?
        restore_clean_db_state!
      end
      start_transaction!
    end
  end

  config.after :each do |example|
    if example.metadata[:type] == :feature
      RSpec.configuration.db_is_dirty = true
    else
      rollback_transaction!
    end
  end
end