code: def test_missing_cache(tmp_dir, dvc, local_remote, caplog):
      tmp_dir.dvc_gen({"foo": "foo", "bar": "bar"})
  
      # purge cache
      dvc.cache.local.clear()
  
      header = (
          "Some of the cache files do not exist "
          "neither locally nor on remote. Missing cache files:\n"
      )
      foo = "md5: 37b51d194a7513e45b56f6524f2d51f2\n"
      bar = "md5: acbd18db4cc2f85cedef654fccc4a4d8\n"
  
      caplog.clear()
      dvc.push()
      assert header in caplog.text
      assert foo in caplog.text
      assert bar in caplog.text
  
      caplog.clear()
      dvc.fetch()
      assert header in caplog.text
      assert foo in caplog.text
      assert bar in caplog.text
  
      caplog.clear()
      assert dvc.status(cloud=True) == {
          "bar": "missing",
          "foo": "missing",
      }
      assert header not in caplog.text
      assert foo not in caplog.text
      assert bar not in caplog.text
  
imports: import logging
  import os
  import shutil
  import pytest
  from flaky.flaky_decorator import flaky
  import dvc_data
  from dvc.cli import main
  from dvc.exceptions import CheckoutError
  from dvc.repo.open_repo import clean_repos
  from dvc.stage.exceptions import StageNotFound
  from dvc.testing.remote_tests import TestRemote
  from dvc.utils.fs import remove
  from dvc_data.hashfile.db import HashFileDB
  from dvc_data.hashfile.db.local import LocalHashFileDB
  from dvc_data.hashfile.hash_info import HashInfo
label_desc: Use image node_id 5 for calling a global function with example usage: test_missing_cache(tmp_dir, dvc, local_remote, caplog) without return types