code: def test_run(self):
      docstore = InMemoryDocumentStore()
      documents = [
          Document(
              content="doc1", meta={"url": "https://example.com/1"}
          ),
          Document(
              content="doc2", meta={"url": "https://example.com/2"}
          ),
          Document(
              content="doc3", meta={"url": "https://example.com/1"}
          ),
          Document(
              content="doc4", meta={"url": "https://example.com/2"}
          ),
      ]
      docstore.write_documents(documents)
      checker = CacheChecker(docstore, cache_field="url")
      results = checker.run(
          items=["https://example.com/1", "https://example.com/5"]
      )
      assert results == {
          "hits": [documents[0], documents[2]],
          "misses": ["https://example.com/5"],
      }
  
file_path: haystack/test/components/caching/test_url_cache_checker.py
imports: import pytest
  from haystack import Document, DeserializationError
  from haystack.testing.factory import document_store_class
  from haystack.document_stores.in_memory import InMemoryDocumentStore
  from haystack.components.caching.cache_checker import CacheChecker
label_desc: Use image node_id 7 for calling the TestCacheChecker obj's underlying member method code with example usage: obj.test_run() without return types