fix failing tests

Author: Pouyanpi

nemoguardrails/actions/llm/utils.py

@@ -94,7 +94,7 @@ async def llm_call(
     _setup_llm_call_info(llm, model_name, model_provider)
     all_callbacks = _prepare_callbacks(custom_callback_handlers)
 
-    if llm_params:
+    if llm_params and llm is not None:
         llm = llm.bind(**llm_params)
 
     if isinstance(prompt, str):

tests/test_embeddings_only_user_messages.py

@@ -205,7 +205,7 @@ def test_examples_included_in_prompts_2(colang_2_config):
 
     info = rails.explain()
     assert len(info.llm_calls) == 2
-    assert 'user said "hi"' in info.llm_calls[0].prompt
+    assert 'user said "Hi"' in info.llm_calls[0].prompt
 
 
 def test_no_llm_calls_embedding_only(colang_2_config):

tests/test_tool_calling_utils.py

@@ -19,6 +19,7 @@
 from langchain_core.messages import AIMessage, HumanMessage, SystemMessage, ToolMessage
 
 from nemoguardrails.actions.llm.utils import (
+    LLMCallException,
     _convert_messages_to_langchain_format,
     _extract_content,
     _store_tool_calls,
@@ -307,6 +308,13 @@ async def test_llm_call_with_llm_params_temperature_max_tokens():
     mock_bound_llm.ainvoke.assert_called_once()
 
 
+@pytest.mark.asyncio
+async def test_llm_call_with_none_llm_and_params():
+    """Test that llm_call handles None llm gracefully even with params."""
+    with pytest.raises(LLMCallException):
+        await llm_call(None, "Test prompt", llm_params={"temperature": 0.5})
+
+
 def test_generation_response_tool_calls_field():
     """Test that GenerationResponse can store tool calls."""
     test_tool_calls = [