new_contents: from feedly.feed_managers.base import Feedly
  from feedly.feeds.base import UserBaseFeed
  from feedly.feeds.cassandra import CassandraFeed
  from feedly.tests.managers.base import BaseFeedlyTest
  import pytest
  
  
  class CassandraUserBaseFeed(UserBaseFeed, CassandraFeed):
      pass
  
  
  class CassandraFeedly(Feedly):
      feed_classes = {
          'feed': CassandraFeed
      }
      user_feed_class = CassandraUserBaseFeed
  
  
  @pytest.mark.usefixtures("cassandra_reset")
  class RedisFeedlyTest(BaseFeedlyTest):
      manager_class = CassandraFeedly
  
subject: add tests for cassandra feed manager