fix(dingtalk): align override signatures with base + guard Optional[error] in tests

gateway/platforms/dingtalk.py

@@ -916,6 +916,7 @@ class DingTalkAdapter(BasePlatformAdapter):
         image_path: str,
         caption: Optional[str] = None,
         reply_to: Optional[str] = None,
+        metadata: Optional[Dict[str, Any]] = None,
         **kwargs,
     ) -> SendResult:
         """DingTalk webhook replies cannot send local image files directly."""
@@ -934,6 +935,7 @@ class DingTalkAdapter(BasePlatformAdapter):
         caption: Optional[str] = None,
         file_name: Optional[str] = None,
         reply_to: Optional[str] = None,
+        metadata: Optional[Dict[str, Any]] = None,
         **kwargs,
     ) -> SendResult:
         """DingTalk webhook replies cannot send local file attachments directly."""

tests/gateway/test_dingtalk.py

@@ -256,7 +256,7 @@ class TestSend:
         result = await adapter.send_image_file("chat-123", "/tmp/demo.png")
 
         assert result.success is False
-        assert "do not support local image uploads" in result.error
+        assert result.error and "do not support local image uploads" in result.error
 
     @pytest.mark.asyncio
     async def test_send_document_returns_explicit_unsupported_error(self):
@@ -266,7 +266,7 @@ class TestSend:
         result = await adapter.send_document("chat-123", "/tmp/demo.pdf")
 
         assert result.success is False
-        assert "do not support local file attachments" in result.error
+        assert result.error and "do not support local file attachments" in result.error
 
 
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