code: def mock_longest_prefix_router() -> LongestPrefixRouter:
      class MockHandle:
          def __init__(self, name: str):
              self._name = name
              self._protocol = RequestProtocol.UNDEFINED
  
          def options(self, *args, **kwargs):
              return self
  
          def __eq__(self, other_name: str):
              return self._name == other_name
  
          def _set_request_protocol(self, protocol: RequestProtocol):
              self._protocol = protocol
  
      def mock_get_handle(name, *args, **kwargs):
          return MockHandle(name)
  
      yield LongestPrefixRouter(mock_get_handle, RequestProtocol.HTTP)
  
file_path: ray/python/ray/serve/tests/test_proxy_router.py
imports: from typing import Callable
  import pytest
  from ray.serve._private.common import EndpointInfo, EndpointTag, RequestProtocol
  from ray.serve._private.proxy_router import EndpointRouter, LongestPrefixRouter, ProxyRouter
label_desc: Use image node_id 2 for calling a global function with example usage: mock_longest_prefix_router() and returns: MockHandle, self, unknown