code: def test_route_prefix(self):
      # Ensure that route_prefix is validated
  
      deployment_schema = self.get_minimal_deployment_schema()
  
      # route_prefix must start with a "/"
      deployment_schema["route_prefix"] = "hello/world"
      with pytest.raises(ValueError):
          DeploymentSchema.parse_obj(deployment_schema)
  
      # route_prefix must end with a "/"
      deployment_schema["route_prefix"] = "/hello/world/"
      with pytest.raises(ValueError):
          DeploymentSchema.parse_obj(deployment_schema)
  
      # route_prefix cannot contain wildcards, meaning it can't have
      # "{" or "}"
      deployment_schema["route_prefix"] = "/hello/{adjective}/world/"
      with pytest.raises(ValueError):
          DeploymentSchema.parse_obj(deployment_schema)
  
      # Ensure a valid route_prefix works
      deployment_schema["route_prefix"] = "/hello/wonderful/world"
      DeploymentSchema.parse_obj(deployment_schema)
  
      # Ensure route_prefix of "/" works
      deployment_schema["route_prefix"] = "/"
      DeploymentSchema.parse_obj(deployment_schema)
  
      # Ensure route_prefix of None works
      deployment_schema["route_prefix"] = None
      DeploymentSchema.parse_obj(deployment_schema)
  
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 5 for calling the TestDeploymentSchema obj's underlying member method code with example usage: obj.test_route_prefix() without return types