adjusting failing test

Author: BSd3v

tests/integration/callbacks/test_prevent_update.py

@@ -36,7 +36,11 @@ def callback1(value):
         raise PreventUpdate("testing callback does not update")
         return value
 
-    @app.callback(Output("output2", "children"), [Input("output1", "children")])
+    @app.callback(
+        Output("output2", "children"),
+        [Input("output1", "children")],
+        prevent_initial_call=True,
+    )
     def callback2(value):
         callback2_count.value += 1
         return value