docstr: Test that storage.delete() works correctly, at always do nothing without
  raising exception.
docstr_tok: ["Test","that","storage.delete","(",")","works","correctly",",","at","always","do","nothing","without","raising","exception","."]
code: def test_storage_delete(self):
      """
      Test that storage.delete() works correctly, at always do nothing without
      raising exception.
      """
      self.storage.delete("another-key")
      self.storage.delete("another-key")
      self.storage.delete("another-key")
  
file_path: streamlit/lib/tests/streamlit/runtime/caching/storage/dummy_cache_storage_test.py
imports: import unittest
  from streamlit.runtime.caching.storage import CacheStorageContext, CacheStorageKeyNotFoundError
  from streamlit.runtime.caching.storage.dummy_cache_storage import DummyCacheStorage, MemoryCacheStorageManager
label_desc: Use image node_id 4 for calling the DummyCacheStorageTest obj's underlying member method code with example usage: obj.test_storage_delete() without return types