code: def test_validate_port():
      """Check that ports outside of 1024-65535 are rejected."""
      for port in [1000, 1023, 65536, 700000]:
          with pytest.raises(subprocess.CalledProcessError) as excinfo:
              subprocess.check_output(
                  [
                      "ray",
                      "start",
                      "--head",
                      "--num-cpus",
                      "8",
                      "--ray-client-server-port",
                      f"{port}",
                  ]
              )
              assert "ValueError" in str(excinfo.traceback)
              assert "65535" in str(excinfo.traceback)
  
imports: import pytest
  import time
  import random
  import sys
  import subprocess
  from unittest.mock import patch
  import ray.util.client.server.server
  import ray.core.generated.ray_client_pb2
  from ray.util.client import _ClientContext, CURRENT_PROTOCOL_VERSION
  from ray.cluster_utils import cluster_not_supported
  import ray
label_desc: Use image node_id 4 for calling a global function with example usage: test_validate_port() without return types