fix(test_completion.py): testing for anthropic function calling

litellm/tests/test_completion.py

@@ -99,6 +99,47 @@ def test_completion_claude_3():
         pytest.fail(f"Error occurred: {e}")
 
 
+def test_completion_claude_3_function_call():
+    litellm.set_verbose = True
+    tools = [
+        {
+            "type": "function",
+            "function": {
+                "name": "get_current_weather",
+                "description": "Get the current weather in a given location",
+                "parameters": {
+                    "type": "object",
+                    "properties": {
+                        "location": {
+                            "type": "string",
+                            "description": "The city and state, e.g. San Francisco, CA",
+                        },
+                        "unit": {"type": "string", "enum": ["celsius", "fahrenheit"]},
+                    },
+                    "required": ["location"],
+                },
+            },
+        }
+    ]
+    messages = [{"role": "user", "content": "What's the weather like in Boston today?"}]
+    try:
+        # test without max tokens
+        response = completion(
+            model="anthropic/claude-3-opus-20240229",
+            messages=messages,
+            tools=tools,
+            tool_choice="auto",
+        )
+        # Add any assertions, here to check response args
+        print(response)
+        assert isinstance(response.choices[0].message.tool_calls[0].function.name, str)
+        assert isinstance(
+            response.choices[0].message.tool_calls[0].function.arguments, str
+        )
+    except Exception as e:
+        pytest.fail(f"Error occurred: {e}")
+
+
 def test_completion_claude_3_stream():
     litellm.set_verbose = False
     messages = [{"role": "user", "content": "Hello, world"}]