keep old is not None assertion

Author: alexander-alderman-webb

tests/integrations/langchain/test_langchain.py

@@ -306,6 +306,9 @@ def test_langchain_agent(
     # Verify that available tools are always recorded regardless of PII settings
     for chat_span in chat_spans:
         tools_data = chat_span["data"][SPANDATA.GEN_AI_REQUEST_AVAILABLE_TOOLS]
+        assert tools_data is not None, (
+            "Available tools should always be recorded regardless of PII settings"
+        )
         assert "get_word_length" in tools_data