project done but test failed

ntfs_utils/db_node.py

@@ -109,10 +109,19 @@ def GetDeviceId(cursor: sqlite3.Cursor) -> int:
 
 # 获取文件大小（伪数据）
 def GetFileSize(file80h_pattern):
+    if not file80h_pattern or not isinstance(file80h_pattern, list):
+        return 0
+
     if file80h_pattern[0].get('is_resident'):
-        return GetFragmentData(file80h_pattern)[0].get('byte_length')
+        fragments = GetFragmentData(file80h_pattern)
+        if fragments and len(fragments) > 0:
+            return fragments[0].get('byte_length', 0)
     else:
-        size_list = ExtractSequenceHexValues(file80h_pattern)[56:64]
+        sequence_list = ExtractSequenceHexValues(file80h_pattern)
+        if len(sequence_list) < 64:
+            raise ValueError("序列长度不足，无法解析文件大小")
+
+        size_list = sequence_list[56:64]
         size = hex_list_to_int(size_list)
         return size