test: provide a tensor to watermark upload guard test

tests/test_watermark_url_only.py

@@ -2,6 +2,7 @@ import os
 from unittest.mock import patch
 
 import pytest
+import torch
 
 from src.Comfyui_Fd_Nodes.nodes import FD_RemoveWatermark
 
@@ -12,6 +13,6 @@ def test_watermark_url_only_upload_failure_does_not_send_or_return_original():
             with patch("requests.post") as post:
                 with pytest.raises(RuntimeError, match="URL request failed: upload failed"):
                     FD_RemoveWatermark().remove_watermark(
-                        None, "http://model/v1/process", "", 0.3, 0.35, 3000, 9, 2, "lama", True, True, 95
+                        torch.zeros((1, 2, 2, 3)), "http://model/v1/process", "", 0.3, 0.35, 3000, 9, 2, "lama", True, True, 95
                     )
                 post.assert_not_called()