From cf80aaacc346def081e7bea4762614477155989e Mon Sep 17 00:00:00 2001
From: JimMoen <LnJimMoen@outlook.com>
Date: Mon, 15 Nov 2021 19:36:54 +0800
Subject: [PATCH] test: add tasks flushing in emqx_cm cases

---
 apps/emqx/test/emqx_cm_SUITE.erl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/apps/emqx/test/emqx_cm_SUITE.erl b/apps/emqx/test/emqx_cm_SUITE.erl
index 45e96775d..05f0418c5 100644
--- a/apps/emqx/test/emqx_cm_SUITE.erl
+++ b/apps/emqx/test/emqx_cm_SUITE.erl
@@ -180,7 +180,7 @@ t_open_session_race_condition(_) ->
     exit(Winner, kill),
     receive {'DOWN', _, process, Winner, _} -> ok end,
     ignored = gen_server:call(emqx_cm, ignore, infinity), %% sync
-    timer:sleep(100),
+    ok = emqx_pool:flush_async_tasks(),
     ?assertEqual([], emqx_cm:lookup_channels(ClientId)).
 
 t_discard_session(_) ->