🐛 Bugfix: Fixed the issue where uploaded text files could not be parsed during a session. (#3219)

* 🐛 Bugfix: Fixed the issue where uploaded text files could not be parsed during a session.
[Specification Details]
1. The return parameter of the file_process method has changed and needs to be unpacked.

* 🐛 Bugfix: Fixed the issue where uploaded text files could not be parsed during a session.
[Specification Details]
1. Modify test case.

Author: YehongPan

backend/services/data_process_service.py

@@ -600,7 +600,7 @@ async def process_uploaded_text_file(self, file_content: bytes, filename: str, c
             f"Processing uploaded file: {filename} using SDK DataProcessCore")
 
         data_processor = DataProcessCore()
-        chunks = data_processor.file_process(
+        chunks, _ = data_processor.file_process(
             file_data=file_content,
             filename=filename,
             chunking_strategy=chunking_strategy

test/backend/services/test_data_process_service.py

@@ -1918,11 +1918,14 @@ async def async_test_process_uploaded_text_file(self, mock_data_process_core):
         """
         # Arrange: mock DataProcessCore.file_process to return mixed chunks
         mock_instance = MagicMock()
-        mock_instance.file_process.return_value = [
-            {"content": "First chunk"},
-            {"no_content": True},
-            {"content": "Second chunk"},
-        ]
+        mock_instance.file_process.return_value = (
+            [
+                {"content": "First chunk"},
+                {"no_content": True},
+                {"content": "Second chunk"},
+            ],
+            []  # images_info
+        )
         mock_data_process_core.return_value = mock_instance
 
         filename = "test.txt"