content: from websockets.protocol import Protocol
  
  from .utils import DeprecationTestCase
  
  
  class BackwardsCompatibilityTests(DeprecationTestCase):
      def test_connection_class(self):
          """Connection is a deprecated alias for Protocol."""
          with self.assertDeprecationWarning(
              "websockets.connection was renamed to websockets.protocol "
              "and Connection was renamed to Protocol"
          ):
              from websockets.connection import Connection
  
          self.assertIs(Connection, Protocol)
  