test(test_streaming.py): fix openai streaming function calling test

litellm/tests/test_streaming.py

@@ -1613,6 +1613,8 @@ def streaming_and_function_calling_format_tests(idx, chunk):
 def test_openai_streaming_and_function_calling():
     tools = [
         {
+            "type": "function",
+            "function": {
                 "name": "get_current_weather",
                 "description": "Get the current weather in a given location",
                 "parameters": {
@@ -1626,6 +1628,7 @@ def test_openai_streaming_and_function_calling():
                     },
                     "required": ["location"],
                 },
+            },
         }
     ]
     messages = [{"role": "user", "content": "What is the weather like in Boston?"}]
@@ -1638,7 +1641,13 @@ def test_openai_streaming_and_function_calling():
         )
         # Add any assertions here to check the response
         for idx, chunk in enumerate(response):
-            streaming_and_function_calling_format_tests(idx=idx, chunk=chunk)
+            if idx == 0:
+                assert (
+                    chunk.choices[0].delta.tool_calls[0].function.arguments is not None
+                )
+                assert isinstance(
+                    chunk.choices[0].delta.tool_calls[0].function.arguments, str
+                )
     except Exception as e:
         pytest.fail(f"Error occurred: {e}")
         raise e