fix: test_cohere_request_body_with_allowed_params

tests/llm_translation/test_cohere.py

@@ -254,10 +254,17 @@ async def test_cohere_request_body_with_allowed_params():
         }
     }]
 
-    client = AsyncHTTPHandler()
+    # Create a mock response
+    mock_response = AsyncMock()
+    mock_response.status_code = 200
+    mock_response.json.return_value = {
+        "text": "I am Command, a language model developed by Cohere.",
+        "generation_id": "mock-generation-id",
+        "finish_reason": "COMPLETE"
+    }
 
-    # Mock the post method
-    with patch.object(client, "post", new=AsyncMock()) as mock_post:
+    # Mock the AsyncHTTPHandler.post method at the module level
+    with patch("litellm.llms.custom_httpx.http_handler.AsyncHTTPHandler.post", return_value=mock_response) as mock_post:
         try:
             await litellm.acompletion(
                 model="cohere/command",
@@ -265,8 +272,7 @@ async def test_cohere_request_body_with_allowed_params():
                 allowed_openai_params=["tools", "response_format", "reasoning_effort"],
                 response_format=test_response_format,
                 reasoning_effort=test_reasoning_effort,
-                tools=test_tools,
-                client=client
+                tools=test_tools
             )
         except Exception:
             pass  # We only care about the request body validation