instance method teardown_transactional_fixtures

# File activerecord/lib/active_record/test_fixtures.rb, line 230
      def teardown_transactional_fixtures
        ActiveSupport::Notifications.unsubscribe(@connection_subscriber) if @connection_subscriber

        clean = true
        @fixture_connection_pools.each do |pool|
          connection = pool.lease_connection
          begin
            if connection.transaction_open?
              connection.rollback_transaction
            else
              # Something caused the transaction to be committed or rolled back
              clean = false
              connection.reset!
            end
          ensure
            pool.unpin_connection!
          end
        end

        unless clean
          # We can no longer trust the database is in a clean state.
          @@already_loaded_fixtures.clear
        end
        @fixture_connection_pools.clear
        teardown_shared_connection_pool
      end