code: def test_empty(self):
      assert get_random_dict_combos({}, 1) == [{}]
  
imports: import itertools
  import random
  import sys
  from typing import Dict, List
  import pytest
  from ray import serve
  from ray.serve._private.config import DeploymentConfig
  from ray.serve.deployment import deployment_to_schema, schema_to_deployment
label_desc: Use image node_id 1 for calling the TestGetDictCombos obj's underlying member method code with example usage: obj.test_empty() without return types