Harrison/llm saving (#331)

Co-authored-by: Akash Samant <70665700+asamant21@users.noreply.github.com>

tests/integration_tests/llms/utils.py

@@ -0,0 +1,16 @@
+"""Utils for LLM Tests."""
+
+from langchain.llms.base import LLM
+
+
+def assert_llm_equality(llm: LLM, loaded_llm: LLM) -> None:
+    """Assert LLM Equality for tests."""
+    # Check that they are the same type.
+    assert type(llm) == type(loaded_llm)
+    # Client field can be session based, so hash is different despite
+    # all other values being the same, so just assess all other fields
+    for field in llm.__fields__.keys():
+        if field != "client":
+            val = getattr(llm, field)
+            new_val = getattr(loaded_llm, field)
+            assert new_val == val