diff --git a/tests/local_testing/test_stream_chunk_builder.py b/tests/local_testing/test_stream_chunk_builder.py
index 660586777fb..81c8ef2295a 100644
--- a/tests/local_testing/test_stream_chunk_builder.py
+++ b/tests/local_testing/test_stream_chunk_builder.py
@@ -902,6 +902,12 @@ def test_stream_chunk_builder_empty_choices_guard():
     Test that stream_chunk_builder does not crash with IndexError when
     streaming chunks contain empty choices lists (e.g. trailing usage chunks).
     """
+    from litellm.main import _simple_text_part
+
+    # Direct unit test exercising empty-sequence guards in _simple_text_part
+    assert _simple_text_part([]) is None
+    assert _simple_text_part([{"delta": {}}]) == ""
+
     chunks = [
         {"id": "chat-test-1", "model": "gpt-4o", "choices": [{"index": 0, "delta": {"role": "assistant", "content": "Hello"}}]},
         {"id": "chat-test-1", "model": "gpt-4o", "choices": [{"index": 0, "delta": {"content": " world"}}]},
@@ -911,3 +917,4 @@ def test_stream_chunk_builder_empty_choices_guard():
     assert res is not None
     assert res["choices"][0]["message"]["content"] == "Hello world"
 
+