code: def tearDown(self):
      # Some of these tests reach directly into _cache_info and twiddle it.
      # Reset default values on teardown.
      caching._cache_info.cached_func_stack = []
      caching._cache_info.suppress_st_function_warning = 0
      super().tearDown()
  
imports: import threading
  import types
  from unittest.mock import Mock, patch
  from parameterized import parameterized
  import streamlit
  from streamlit.elements import exception
  from streamlit.proto.Exception_pb2 import Exception
  from streamlit.runtime.legacy_caching import caching, hashing
  from tests import testutil
  from tests.delta_generator_test_case import DeltaGeneratorTestCase
label_desc: Use image node_id 1 for calling the CacheTest obj's underlying member method code with example usage: obj.tearDown() without return types