code: def test_schema():
      jsonschema = pytest.importorskip("jsonschema")
      config_fn = os.path.join(
          os.path.dirname(__file__), "..", "distributed.yaml"
      )
      schema_fn = os.path.join(
          os.path.dirname(__file__), "..", "distributed-schema.yaml"
      )
  
      with open(config_fn) as f:
          config = yaml.safe_load(f)
  
      with open(schema_fn) as f:
          schema = yaml.safe_load(f)
  
      jsonschema.validate(config, schema)
  
imports: from __future__ import annotations
  import contextlib
  import logging
  import os
  import re
  import subprocess
  import sys
  import tempfile
  import textwrap
  import pytest
  import yaml
  import dask.config
  from distributed.config import initialize_logging
  from distributed.utils_test import captured_handler, new_config, new_config_file
label_desc: Use image node_id 9 for calling a global function with example usage: test_schema() without return types