From cdd255a73698a6b7b5da3d6d20c2aa6a8b072d18 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Krier?= <ced@b2ck.com>
Date: Fri, 23 Dec 2022 23:57:17 +0100
Subject: [PATCH] Avoid concurrency failure in cache test with channel

We need to ensure that the listener has finished to clear the cache before
resume the main thread execution.

Closes #11950
---
 trytond/trytond/cache.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/trytond/trytond/cache.py b/trytond/trytond/cache.py
index e087b75155..d1c670ecc8 100644
--- a/trytond/trytond/cache.py
+++ b/trytond/trytond/cache.py
@@ -369,11 +369,10 @@ class MemoryCache(BaseCache):
 
             cursor = conn.cursor()
             cursor.execute('LISTEN "%s"' % cls._channel)
-            current_thread.listening = True
-
             # Clear everything in case we missed a payload
             Pool(dbname).refresh(_get_modules(cursor))
             cls._clear_all(dbname)
+            current_thread.listening = True
 
             selector.register(conn, selectors.EVENT_READ)
             while cls._listener.get((pid, dbname)) == current_thread: