code: def test_ge_zero_ray_actor_options_schema(self):
      # Ensure ValidationError is raised when any fields that must be greater
      # than zero is set to zero.
  
      ge_zero_fields = [
          "num_cpus",
          "num_gpus",
          "memory",
          "object_store_memory",
      ]
      for field in ge_zero_fields:
          with pytest.raises(ValidationError):
              RayActorOptionsSchema.parse_obj({field: -1})
  
imports: import copy
  import json
  import logging
  import sys
  from typing import Dict, List, Optional, Union
  import pytest
  from ray import serve
  from ray._private.pydantic_compat import ValidationError
  from ray.serve.config import AutoscalingConfig
  from ray.serve.deployment import deployment_to_schema, schema_to_deployment
  from ray.serve.schema import DeploymentSchema, LoggingConfig, RayActorOptionsSchema, ServeApplicationSchema, ServeDeploySchema, ServeInstanceDetails
  from ray.serve.tests.common.remote_uris import TEST_DEPLOY_GROUP_PINNED_URI, TEST_MODULE_PINNED_URI
  from ray.util.accelerators.accelerators import NVIDIA_TESLA_P4, NVIDIA_TESLA_V100
label_desc: Use image node_id 3 for calling the TestRayActorOptionsSchema obj's underlying member method code with example usage: obj.test_ge_zero_ray_actor_options_schema() without return types