FIx #14158

Author: kutsushitaneko

litellm/llms/oci/chat/transformation.py

@@ -772,7 +772,14 @@ def adapt_messages_to_generic_oci_standard(
         tool_calls = message.get("tool_calls")
         tool_call_id = message.get("tool_call_id")
 
-        if role in ["system", "user", "assistant"] and content is not None:
+        if role == "assistant" and tool_calls is not None:
+            if not isinstance(tool_calls, list):
+                raise Exception("Prop `tool_calls` must be a list of tool calls")
+            new_messages.append(
+                adapt_messages_to_generic_oci_standard_tool_call(role, tool_calls)
+            )
+
+        elif role in ["system", "user", "assistant"] and content is not None:
             if not isinstance(content, (str, list)):
                 raise Exception(
                     "Prop `content` must be a string or a list of content items"
@@ -781,13 +788,6 @@ def adapt_messages_to_generic_oci_standard(
                 adapt_messages_to_generic_oci_standard_content_message(role, content)
             )
 
-        elif role == "assistant" and tool_calls is not None:
-            if not isinstance(tool_calls, list):
-                raise Exception("Prop `tool_calls` must be a list of tool calls")
-            new_messages.append(
-                adapt_messages_to_generic_oci_standard_tool_call(role, tool_calls)
-            )
-
         elif role == "tool":
             if not isinstance(tool_call_id, str):
                 raise Exception("Prop `tool_call_id` is required and must be a string")

tests/test_litellm/llms/oci/chat/test_transformation.py

@@ -0,0 +1,229 @@
+import pytest
+from litellm.llms.oci.chat.transformation import adapt_messages_to_generic_oci_standard
+
+def test_adapt_messages_with_empty_content_and_tool_calls():
+    """Test that assistant messages with empty content and tool_calls are processed correctly."""
+    # Arrange
+    messages_with_empty_content = [
+        {"role": "user", "content": "Tell me the weather in Tokyo."},
+        {
+            "role": "assistant",
+            "content": "",  # Empty string
+            "tool_calls": [
+                {
+                    "id": "call_test_empty",
+                    "type": "function",
+                    "function": {
+                        "name": "get_weather",
+                        "arguments": '{"city": "Tokyo"}'
+                    }
+                }
+            ]
+        },
+        {
+            "role": "tool",
+            "content": '{"weather": "Sunny", "temperature": "25°C"}',
+            "tool_call_id": "call_test_empty"
+        }
+    ]
+    
+    # Act
+    result = adapt_messages_to_generic_oci_standard(messages_with_empty_content)
+    
+    # Assert
+    assert len(result) == 3
+    
+    # Check user message
+    assert result[0].role == "USER"
+    assert result[0].content[0].type == "TEXT"
+    assert result[0].content[0].text == "Tell me the weather in Tokyo."
+    
+    # Check assistant message with tool_calls (should prioritize tool_calls over empty content)
+    assert result[1].role == "ASSISTANT"
+    assert result[1].toolCalls is not None
+    assert len(result[1].toolCalls) == 1
+    assert result[1].toolCalls[0].id == "call_test_empty"
+    assert result[1].toolCalls[0].name == "get_weather"
+    
+    # Check tool response message
+    assert result[2].role == "TOOL"  # Tool responses have TOOL role, not USER
+    assert result[2].content[0].type == "TEXT"
+    assert "weather" in result[2].content[0].text
+    assert result[2].toolCallId == "call_test_empty"  # Tool call ID is in separate field
+
+def test_adapt_messages_with_none_content_and_tool_calls():
+    """Test that assistant messages with None content and tool_calls are processed correctly."""
+    # Arrange
+    messages_with_none_content = [
+        {"role": "user", "content": "Tell me the weather in Tokyo."},
+        {
+            "role": "assistant",
+            "content": None,  # None value
+            "tool_calls": [
+                {
+                    "id": "call_test_none",
+                    "type": "function",
+                    "function": {
+                        "name": "get_weather",
+                        "arguments": '{"city": "Tokyo"}'
+                    }
+                }
+            ]
+        },
+        {
+            "role": "tool",
+            "content": '{"weather": "Sunny", "temperature": "25°C"}',
+            "tool_call_id": "call_test_none"
+        }
+    ]
+    
+    # Act
+    result = adapt_messages_to_generic_oci_standard(messages_with_none_content)
+    
+    # Assert
+    assert len(result) == 3
+    
+    # Check assistant message prioritizes tool_calls over None content
+    assert result[1].role == "ASSISTANT"
+    assert result[1].toolCalls is not None
+    assert len(result[1].toolCalls) == 1
+    assert result[1].toolCalls[0].id == "call_test_none"
+
+def test_adapt_messages_with_tool_calls_only():
+    """Test that assistant messages with only tool_calls (no content field) are processed correctly."""
+    # Arrange
+    messages_no_content = [
+        {"role": "user", "content": "Tell me the weather in Tokyo."},
+        {
+            "role": "assistant",
+            # No content field at all
+            "tool_calls": [
+                {
+                    "id": "call_test_no_content",
+                    "type": "function",
+                    "function": {
+                        "name": "get_weather",
+                        "arguments": '{"city": "Tokyo"}'
+                    }
+                }
+            ]
+        },
+        {
+            "role": "tool",
+            "content": '{"weather": "Sunny", "temperature": "25°C"}',
+            "tool_call_id": "call_test_no_content"
+        }
+    ]
+    
+    # Act
+    result = adapt_messages_to_generic_oci_standard(messages_no_content)
+    
+    # Assert
+    assert len(result) == 3
+    
+    # Check assistant message processes tool_calls correctly
+    assert result[1].role == "ASSISTANT"
+    assert result[1].toolCalls is not None
+    assert len(result[1].toolCalls) == 1
+    assert result[1].toolCalls[0].id == "call_test_no_content"
+
+def test_adapt_messages_with_content_only():
+    """Test that assistant messages with only content (no tool_calls) are processed correctly."""
+    # Arrange
+    messages_content_only = [
+        {"role": "user", "content": "Hello"},
+        {
+            "role": "assistant",
+            "content": "Hello! How can I help you today?"
+        }
+    ]
+    
+    # Act
+    result = adapt_messages_to_generic_oci_standard(messages_content_only)
+    
+    # Assert
+    assert len(result) == 2
+    
+    # Check assistant message with content only
+    assert result[1].role == "ASSISTANT"
+    assert result[1].content[0].type == "TEXT"
+    assert result[1].content[0].text == "Hello! How can I help you today?"
+    assert result[1].toolCalls is None
+
+def test_adapt_messages_tool_id_tracking():
+    """Test that tool call IDs are properly tracked for validation."""
+    # Arrange
+    messages = [
+        {"role": "user", "content": "Test"},
+        {
+            "role": "assistant",
+            "tool_calls": [
+                {
+                    "id": "call_123",
+                    "type": "function",
+                    "function": {
+                        "name": "test_func",
+                        "arguments": '{"param": "value"}'
+                    }
+                }
+            ]
+        },
+        {
+            "role": "tool",
+            "content": "Result",
+            "tool_call_id": "call_123"
+        }
+    ]
+    
+    # Act
+    result = adapt_messages_to_generic_oci_standard(messages)
+    
+    # Assert
+    # Tool call should be processed and ID should be available for validation
+    assert result[1].toolCalls[0].id == "call_123"
+    
+    # Tool response should reference the same ID
+    tool_response_text = result[2].content[0].text
+    # Tool response text is just the content, tool_call_id is separate
+    assert tool_response_text == "Result"  # The actual content
+    assert result[2].toolCallId == "call_123"  # Tool call ID is in separate field
+
+def test_adapt_messages_multiple_tool_calls():
+    """Test that multiple tool calls in a single message are processed correctly."""
+    # Arrange
+    messages = [
+        {"role": "user", "content": "Test multiple tools"},
+        {
+            "role": "assistant",
+            "content": "",
+            "tool_calls": [
+                {
+                    "id": "call_1",
+                    "type": "function",
+                    "function": {
+                        "name": "func1",
+                        "arguments": '{"param": "value1"}'
+                    }
+                },
+                {
+                    "id": "call_2", 
+                    "type": "function",
+                    "function": {
+                        "name": "func2",
+                        "arguments": '{"param": "value2"}'
+                    }
+                }
+            ]
+        }
+    ]
+    
+    # Act
+    result = adapt_messages_to_generic_oci_standard(messages)
+    
+    # Assert
+    assert len(result) == 2
+    assert result[1].role == "ASSISTANT"
+    assert len(result[1].toolCalls) == 2
+    assert result[1].toolCalls[0].id == "call_1"
+    assert result[1].toolCalls[1].id == "call_2"
+