From b3c06bd139f32b04e4474073e1b215db9e4b0cd3 Mon Sep 17 00:00:00 2001
From: benedikt-bartscher
 <31854409+benedikt-bartscher@users.noreply.github.com>
Date: Tue, 7 May 2024 03:34:16 +0200
Subject: [PATCH] prevent issues with #3214 (#3237)

---
 reflex/testing.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/reflex/testing.py b/reflex/testing.py
index 52eadb7f4..5613af333 100644
--- a/reflex/testing.py
+++ b/reflex/testing.py
@@ -1,4 +1,5 @@
 """reflex.testing - tools for testing reflex apps."""
+
 from __future__ import annotations
 
 import asyncio
@@ -166,6 +167,8 @@ class AppHarness:
                 app_name = app_source.__name__
 
             app_name = app_name.lower()
+            while "__" in app_name:
+                app_name = app_name.replace("__", "_")
         return cls(
             app_name=app_name,
             app_source=app_source,