code: def test_syncer_hanging_sync_with_timeout(temp_data_dirs, tmp_path):
      """Check that syncing times out when the sync process is hanging."""
      tmp_source, tmp_target = temp_data_dirs
  
      def _hanging_sync_up_command(*args, **kwargs):
          time.sleep(200)
  
      class _HangingSyncer(_FilesystemSyncer):
          def _sync_up_command(
              self,
              local_path: str,
              uri: str,
              exclude: Optional[List] = None,
          ):
              return _hanging_sync_up_command, {}
  
      syncer = _HangingSyncer(
          storage_filesystem=_create_mock_custom_fs(tmp_path),
          sync_period=60,
          sync_timeout=10,
      )
  
      def sync_up():
          return syncer.sync_up(
              local_dir=tmp_source,
              remote_dir="/test/test_syncer_timeout",
          )
  
      with freeze_time() as frozen:
          assert sync_up()
          frozen.tick(5)
          # 5 seconds - initial sync hasn't reached the timeout yet
          # It should continue running without launching a new sync
          assert not sync_up()
          frozen.tick(5)
          # Reached the timeout - start running a new sync command
          assert sync_up()
          frozen.tick(20)
          # We're 10 seconds past the timeout, waiting should result in a timeout error
          with pytest.raises(TimeoutError):
              syncer.wait()
  
imports: import logging
  import os
  import time
  from typing import List, Optional
  from freezegun import freeze_time
  import pytest
  import ray
  import ray.cloudpickle
  from ray.train._internal.storage import _upload_to_fs_path, _download_from_fs_path, get_fs_and_path, _FilesystemSyncer
  from ray.train._internal.syncer import _BackgroundProcess
  from ray.train.tests.test_new_persistence import _create_mock_custom_fs
label_desc: Use image node_id 13 for calling a global function with example usage: test_syncer_hanging_sync_with_timeout(temp_data_dirs, tmp_path) and returns: syncer, _hanging_sync_up_command,  dict