diff --git a/notfound.py b/notfound.py
index 77a4a7c..9e75d8a 100644
--- a/notfound.py
+++ b/notfound.py
@@ -37,4 +37,7 @@ def create() -> None:
                 
                 ui.button('返回首页', 
                           on_click=lambda: ui.navigate.to('/')) \
-                    .classes('items-center w-full').props('rounded')
\ No newline at end of file
+                    .classes('items-center w-full').props('rounded')
+
+if __name__ not in {"__main__", "__mp_main__"}:
+    raise Exception('不支持单测模式，请从main.py启动')
\ No newline at end of file