teardown_shared_connection_pool

# File activerecord/lib/active_record/test_fixtures.rb, line 237
      def teardown_shared_connection_pool
        handler = ActiveRecord::Base.connection_handler

        @saved_pool_configs.each_pair do |name, shards|
          pool_manager = handler.send(:connection_name_to_pool_manager)[name]
          shards.each_pair do |shard_name, roles|
            roles.each_pair do |role, pool_config|
              next unless pool_manager.get_pool_config(role, shard_name)

              pool_manager.set_pool_config(role, shard_name, pool_config)
            end
          end
        end

        @saved_pool_configs.clear
      end