From d6dfead31d663bee61ea07b00c48b2d617041ac3 Mon Sep 17 00:00:00 2001
From: Zhongwen Deng <zhongwencool@gmail.com>
Date: Wed, 26 Oct 2022 22:05:20 +0800
Subject: [PATCH] fix: prometheus ct failed

---
 apps/emqx_prometheus/test/emqx_prometheus_SUITE.erl | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/apps/emqx_prometheus/test/emqx_prometheus_SUITE.erl b/apps/emqx_prometheus/test/emqx_prometheus_SUITE.erl
index 1a72b8952..e26bcfeb4 100644
--- a/apps/emqx_prometheus/test/emqx_prometheus_SUITE.erl
+++ b/apps/emqx_prometheus/test/emqx_prometheus_SUITE.erl
@@ -71,9 +71,13 @@ load_config() ->
 %%--------------------------------------------------------------------
 
 t_start_stop(_) ->
-    ?assertMatch(ok, emqx_prometheus:start()),
-    ?assertMatch(ok, emqx_prometheus:stop()),
-    ?assertMatch(ok, emqx_prometheus:restart()),
+    App = emqx_prometheus,
+    ?assertMatch(ok, emqx_prometheus_sup:start_child(App)),
+    %% start twice return ok.
+    ?assertMatch(ok, emqx_prometheus_sup:start_child(App)),
+    ?assertMatch(ok, emqx_prometheus_sup:stop_child(App)),
+    %% stop twice return ok.
+    ?assertMatch(ok, emqx_prometheus_sup:stop_child(App)),
     %% wait the interval timer trigger
     timer:sleep(2000).