Fix optional dependency imports in CI tests

swift/template/templates/gemma.py

@@ -105,12 +105,12 @@ def replace_tag(self, media_type: Literal['image', 'video', 'audio'], index: int
         return ['<start_of_image>']
 
     def _encode(self, inputs: StdTemplateInputs) -> Dict[str, Any]:
-        from transformers.models.gemma3.processing_gemma3 import Gemma3ProcessorKwargs
-
         encoded = super()._encode(inputs)
         # Keep text-only rows aligned with multimodal rows in mixed batches.
         encoded['token_type_ids'] = [0] * len(encoded['input_ids'])
         if inputs.images:
+            from transformers.models.gemma3.processing_gemma3 import Gemma3ProcessorKwargs
+
             input_ids = encoded['input_ids']
             labels = encoded['labels']
             loss_scale = encoded.get('loss_scale', None)

tests/general/test_gemma3_template.py

@@ -12,7 +12,8 @@ def test_text_only_encode_has_token_type_ids(self):
         encoded = {'input_ids': [2, 10, 20], 'labels': [-100, 10, 20]}
         inputs = SimpleNamespace(images=[])
 
-        with patch.object(Gemma3Template, '_encode', return_value=encoded):
-            result = template._encode(inputs)
+        with patch.dict('sys.modules', {'transformers.models.gemma3.processing_gemma3': None}):
+            with patch.object(Gemma3Template, '_encode', return_value=encoded):
+                result = template._encode(inputs)
 
         self.assertEqual(result['token_type_ids'], [0, 0, 0])

tests/llm/test_web_ui.py

@@ -1,5 +1,5 @@
-from swift.arguments import WebUIArguments
-from swift.ui import webui_main
-
 if __name__ == '__main__':
+    from swift.arguments import WebUIArguments
+    from swift.ui import webui_main
+
     webui_main(WebUIArguments())