docstr: Tests that LocalDiskCacheStorageManager.clear_all() calls shutil.rmtree
  to remove the cache folder
docstr_tok: ["Tests","that","LocalDiskCacheStorageManager.clear_all","(",")","calls","shutil.rmtree","to","remove","the","cache","folder"]
code: def test_clear_all(self, mock_rmtree):
      """Tests that LocalDiskCacheStorageManager.clear_all() calls shutil.rmtree
      to remove the cache folder
      """
      manager = LocalDiskCacheStorageManager()
      manager.clear_all()
      mock_rmtree.assert_called_once()
  
imports: import logging
  import math
  import os.path
  import shutil
  import unittest
  from unittest.mock import MagicMock, patch
  from testfixtures import TempDirectory
  from streamlit import util
  from streamlit.logger import get_logger
  from streamlit.runtime.caching.storage import CacheStorageContext, CacheStorageError, CacheStorageKeyNotFoundError
  from streamlit.runtime.caching.storage.in_memory_cache_storage_wrapper import InMemoryCacheStorageWrapper
  from streamlit.runtime.caching.storage.local_disk_cache_storage import LocalDiskCacheStorage, LocalDiskCacheStorageManager
label_desc: Use image node_id 7 for calling the LocalDiskCacheStorageManagerTest obj's underlying member method code with example usage: obj.test_clear_all(mock_rmtree) without return types