diff --git a/apps/emqx/test/emqx_ratelimiter_SUITE.erl b/apps/emqx/test/emqx_ratelimiter_SUITE.erl
index 17a63e79a..c26c82aaf 100644
--- a/apps/emqx/test/emqx_ratelimiter_SUITE.erl
+++ b/apps/emqx/test/emqx_ratelimiter_SUITE.erl
@@ -96,7 +96,7 @@ all() ->
     emqx_common_test_helpers:all(?MODULE).
 
 init_per_suite(Config) ->
-    ok = emqx_config:init_load(emqx_limiter_schema, ?BASE_CONF),
+    ok = emqx_common_test_helpers:load_config(emqx_limiter_schema, ?BASE_CONF),
     emqx_common_test_helpers:start_apps([?APP]),
     Config.
 
@@ -107,7 +107,7 @@ init_per_testcase(_TestCase, Config) ->
     Config.
 
 base_conf() ->
-    emqx_config:init_load(emqx_limiter_schema, ?BASE_CONF).
+    emqx_common_test_helpers:load_config(emqx_limiter_schema, ?BASE_CONF).
 
 %%--------------------------------------------------------------------
 %% Test Cases Bucket Level
diff --git a/apps/emqx_auto_subscribe/test/emqx_auto_subscribe_SUITE.erl b/apps/emqx_auto_subscribe/test/emqx_auto_subscribe_SUITE.erl
index 483e777f0..8635c1b74 100644
--- a/apps/emqx_auto_subscribe/test/emqx_auto_subscribe_SUITE.erl
+++ b/apps/emqx_auto_subscribe/test/emqx_auto_subscribe_SUITE.erl
@@ -58,7 +58,7 @@ init_per_suite(Config) ->
 
     application:load(emqx_dashboard),
     application:load(?APP),
-    ok = emqx_config:init_load(emqx_auto_subscribe_schema,
+    ok = emqx_common_test_helpers:load_config(emqx_auto_subscribe_schema,
         <<"auto_subscribe {
             topics = [
                 {
diff --git a/apps/emqx_bridge/test/emqx_bridge_api_SUITE.erl b/apps/emqx_bridge/test/emqx_bridge_api_SUITE.erl
index ea0aa27a9..9d6e39db4 100644
--- a/apps/emqx_bridge/test/emqx_bridge_api_SUITE.erl
+++ b/apps/emqx_bridge/test/emqx_bridge_api_SUITE.erl
@@ -64,7 +64,7 @@ init_per_suite(Config) ->
     _ = application:stop(emqx_resource),
     _ = application:stop(emqx_connector),
     ok = emqx_common_test_helpers:start_apps([emqx_bridge, emqx_dashboard]),
-    ok = emqx_config:init_load(emqx_bridge_schema, ?CONF_DEFAULT),
+    ok = emqx_common_test_helpers:load_config(emqx_bridge_schema, ?CONF_DEFAULT),
     Config.
 
 end_per_suite(_Config) ->
diff --git a/apps/emqx_connector/test/emqx_connector_api_SUITE.erl b/apps/emqx_connector/test/emqx_connector_api_SUITE.erl
index 2b0673536..fb7b15201 100644
--- a/apps/emqx_connector/test/emqx_connector_api_SUITE.erl
+++ b/apps/emqx_connector/test/emqx_connector_api_SUITE.erl
@@ -97,9 +97,9 @@ init_per_suite(Config) ->
     _ = application:stop(emqx_connector),
     ok = emqx_common_test_helpers:start_apps([emqx_rule_engine, emqx_connector,
         emqx_bridge, emqx_dashboard]),
-    ok = emqx_config:init_load(emqx_connector_schema, <<"connectors: {}">>),
-    ok = emqx_config:init_load(emqx_rule_engine_schema, <<"rule_engine {rules {}}">>),
-    ok = emqx_config:init_load(emqx_bridge_schema, ?BRIDGE_CONF_DEFAULT),
+    ok = emqx_common_test_helpers:load_config(emqx_connector_schema, <<"connectors: {}">>),
+    ok = emqx_common_test_helpers:load_config(emqx_rule_engine_schema, <<"rule_engine {rules {}}">>),
+    ok = emqx_common_test_helpers:load_config(emqx_bridge_schema, ?BRIDGE_CONF_DEFAULT),
     Config.
 
 end_per_suite(_Config) ->
diff --git a/apps/emqx_gateway/test/emqx_coap_SUITE.erl b/apps/emqx_gateway/test/emqx_coap_SUITE.erl
index e35c6e2db..e1ae7963b 100644
--- a/apps/emqx_gateway/test/emqx_coap_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_coap_SUITE.erl
@@ -53,7 +53,7 @@ gateway.coap
 all() -> emqx_common_test_helpers:all(?MODULE).
 
 init_per_suite(Config) ->
-    ok = emqx_config:init_load(emqx_gateway_schema, ?CONF_DEFAULT),
+    ok = emqx_common_test_helpers:load_config(emqx_gateway_schema, ?CONF_DEFAULT),
     emqx_mgmt_api_test_util:init_suite([emqx_gateway]),
     Config.
 
diff --git a/apps/emqx_gateway/test/emqx_coap_api_SUITE.erl b/apps/emqx_gateway/test/emqx_coap_api_SUITE.erl
index 668fd9534..54a90175f 100644
--- a/apps/emqx_gateway/test/emqx_coap_api_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_coap_api_SUITE.erl
@@ -54,7 +54,7 @@ all() ->
     emqx_common_test_helpers:all(?MODULE).
 
 init_per_suite(Config) ->
-    ok = emqx_config:init_load(emqx_gateway_schema, ?CONF_DEFAULT),
+    ok = emqx_common_test_helpers:load_config(emqx_gateway_schema, ?CONF_DEFAULT),
     emqx_mgmt_api_test_util:init_suite([emqx_gateway]),
     Config.
 
diff --git a/apps/emqx_gateway/test/emqx_gateway_SUITE.erl b/apps/emqx_gateway/test/emqx_gateway_SUITE.erl
index d6da58df3..dbe17da42 100644
--- a/apps/emqx_gateway/test/emqx_gateway_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_gateway_SUITE.erl
@@ -32,7 +32,7 @@ all() -> emqx_common_test_helpers:all(?MODULE).
 
 init_per_suite(Conf) ->
     emqx_config:erase(gateway),
-    emqx_config:init_load(emqx_gateway_schema, ?CONF_DEFAULT),
+    emqx_common_test_helpers:load_config(emqx_gateway_schema, ?CONF_DEFAULT),
     emqx_common_test_helpers:start_apps([emqx_gateway]),
     Conf.
 
diff --git a/apps/emqx_gateway/test/emqx_gateway_api_SUITE.erl b/apps/emqx_gateway/test/emqx_gateway_api_SUITE.erl
index 12b0ef7b5..7fb611e9a 100644
--- a/apps/emqx_gateway/test/emqx_gateway_api_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_gateway_api_SUITE.erl
@@ -40,7 +40,7 @@ all() -> emqx_common_test_helpers:all(?MODULE).
 
 init_per_suite(Conf) ->
     emqx_config:erase(gateway),
-    emqx_config:init_load(emqx_gateway_schema, ?CONF_DEFAULT),
+    emqx_common_test_helpers:load_config(emqx_gateway_schema, ?CONF_DEFAULT),
     emqx_mgmt_api_test_util:init_suite([emqx_conf, emqx_authn, emqx_gateway]),
     Conf.
 
diff --git a/apps/emqx_gateway/test/emqx_gateway_cli_SUITE.erl b/apps/emqx_gateway/test/emqx_gateway_cli_SUITE.erl
index 24dacf750..fb59a67da 100644
--- a/apps/emqx_gateway/test/emqx_gateway_cli_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_gateway_cli_SUITE.erl
@@ -54,7 +54,7 @@ all() -> emqx_common_test_helpers:all(?MODULE).
 
 init_per_suite(Conf) ->
     emqx_config:erase(gateway),
-    emqx_config:init_load(emqx_gateway_schema, ?CONF_DEFAULT),
+    emqx_common_test_helpers:load_config(emqx_gateway_schema, ?CONF_DEFAULT),
     emqx_mgmt_api_test_util:init_suite([emqx_conf, emqx_authn, emqx_gateway]),
     Conf.
 
diff --git a/apps/emqx_gateway/test/emqx_gateway_cm_SUITE.erl b/apps/emqx_gateway/test/emqx_gateway_cm_SUITE.erl
index 558e90bd3..b21021376 100644
--- a/apps/emqx_gateway/test/emqx_gateway_cm_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_gateway_cm_SUITE.erl
@@ -34,7 +34,7 @@ all() -> emqx_common_test_helpers:all(?MODULE).
 
 init_per_suite(Conf) ->
     emqx_config:erase(gateway),
-    emqx_config:init_load(emqx_gateway_schema, ?CONF_DEFAULT),
+    emqx_common_test_helpers:load_config(emqx_gateway_schema, ?CONF_DEFAULT),
     emqx_common_test_helpers:start_apps([]),
 
     ok = meck:new(emqx_gateway_metrics, [passthrough, no_history, no_link]),
diff --git a/apps/emqx_gateway/test/emqx_gateway_cm_registry_SUITE.erl b/apps/emqx_gateway/test/emqx_gateway_cm_registry_SUITE.erl
index 3cca034a6..0401d9fe6 100644
--- a/apps/emqx_gateway/test/emqx_gateway_cm_registry_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_gateway_cm_registry_SUITE.erl
@@ -34,7 +34,7 @@ all() -> emqx_common_test_helpers:all(?MODULE).
 
 init_per_suite(Conf) ->
     emqx_config:erase(gateway),
-    emqx_config:init_load(emqx_gateway_schema, ?CONF_DEFAULT),
+    emqx_common_test_helpers:load_config(emqx_gateway_schema, ?CONF_DEFAULT),
     emqx_common_test_helpers:start_apps([]),
     Conf.
 
diff --git a/apps/emqx_gateway/test/emqx_gateway_conf_SUITE.erl b/apps/emqx_gateway/test/emqx_gateway_conf_SUITE.erl
index 82b12400d..15fac5c3d 100644
--- a/apps/emqx_gateway/test/emqx_gateway_conf_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_gateway_conf_SUITE.erl
@@ -34,7 +34,7 @@ all() ->
     emqx_common_test_helpers:all(?MODULE).
 
 init_per_suite(Conf) ->
-    emqx_config:init_load(emqx_gateway_schema, <<"gateway {}">>),
+    emqx_common_test_helpers:load_config(emqx_gateway_schema, <<"gateway {}">>),
     emqx_common_test_helpers:start_apps([emqx_conf, emqx_authn, emqx_gateway]),
     Conf.
 
diff --git a/apps/emqx_gateway/test/emqx_gateway_metrics_SUITE.erl b/apps/emqx_gateway/test/emqx_gateway_metrics_SUITE.erl
index b55de1738..0bfa82204 100644
--- a/apps/emqx_gateway/test/emqx_gateway_metrics_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_gateway_metrics_SUITE.erl
@@ -33,7 +33,7 @@ all() -> emqx_common_test_helpers:all(?MODULE).
 
 init_per_suite(Conf) ->
     emqx_config:erase(gateway),
-    emqx_config:init_load(emqx_gateway_schema, ?CONF_DEFAULT),
+    emqx_common_test_helpers:load_config(emqx_gateway_schema, ?CONF_DEFAULT),
     emqx_common_test_helpers:start_apps([]),
     Conf.
 
diff --git a/apps/emqx_gateway/test/emqx_gateway_registry_SUITE.erl b/apps/emqx_gateway/test/emqx_gateway_registry_SUITE.erl
index 63378f875..99a89149b 100644
--- a/apps/emqx_gateway/test/emqx_gateway_registry_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_gateway_registry_SUITE.erl
@@ -34,7 +34,7 @@ all() -> emqx_common_test_helpers:all(?MODULE).
 %%--------------------------------------------------------------------
 
 init_per_suite(Cfg) ->
-    ok = emqx_config:init_load(emqx_gateway_schema, ?CONF_DEFAULT),
+    ok = emqx_common_test_helpers:load_config(emqx_gateway_schema, ?CONF_DEFAULT),
     emqx_common_test_helpers:start_apps([emqx_gateway]),
     Cfg.
 
diff --git a/apps/emqx_gateway/test/emqx_lwm2m_SUITE.erl b/apps/emqx_gateway/test/emqx_lwm2m_SUITE.erl
index ee239e5d5..13ac8c881 100644
--- a/apps/emqx_gateway/test/emqx_lwm2m_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_lwm2m_SUITE.erl
@@ -173,7 +173,7 @@ end_per_suite(Config) ->
     Config.
 
 init_per_testcase(_AllTestCase, Config) ->
-    ok = emqx_config:init_load(emqx_gateway_schema, ?CONF_DEFAULT),
+    ok = emqx_common_test_helpers:load_config(emqx_gateway_schema, ?CONF_DEFAULT),
 
     {ok, _} = application:ensure_all_started(emqx_gateway),
     {ok, ClientUdpSock} = gen_udp:open(0, [binary, {active, false}]),
diff --git a/apps/emqx_gateway/test/emqx_lwm2m_api_SUITE.erl b/apps/emqx_gateway/test/emqx_lwm2m_api_SUITE.erl
index 5dbc3a331..0194368bf 100644
--- a/apps/emqx_gateway/test/emqx_lwm2m_api_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_lwm2m_api_SUITE.erl
@@ -69,7 +69,7 @@ all() ->
     emqx_common_test_helpers:all(?MODULE).
 
 init_per_suite(Config) ->
-    ok = emqx_config:init_load(emqx_gateway_schema, ?CONF_DEFAULT),
+    ok = emqx_common_test_helpers:load_config(emqx_gateway_schema, ?CONF_DEFAULT),
     application:load(emqx_gateway),
     emqx_mgmt_api_test_util:init_suite([emqx_conf]),
     Config.
@@ -81,7 +81,7 @@ end_per_suite(Config) ->
     Config.
 
 init_per_testcase(_AllTestCase, Config) ->
-    ok = emqx_config:init_load(emqx_gateway_schema, ?CONF_DEFAULT),
+    ok = emqx_common_test_helpers:load_config(emqx_gateway_schema, ?CONF_DEFAULT),
     {ok, _} = application:ensure_all_started(emqx_gateway),
     {ok, ClientUdpSock} = gen_udp:open(0, [binary, {active, false}]),
 
diff --git a/apps/emqx_gateway/test/emqx_sn_protocol_SUITE.erl b/apps/emqx_gateway/test/emqx_sn_protocol_SUITE.erl
index fded10e03..909afceab 100644
--- a/apps/emqx_gateway/test/emqx_sn_protocol_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_sn_protocol_SUITE.erl
@@ -88,7 +88,7 @@ all() ->
     emqx_common_test_helpers:all(?MODULE).
 
 init_per_suite(Config) ->
-    ok = emqx_config:init_load(emqx_gateway_schema, ?CONF_DEFAULT),
+    ok = emqx_common_test_helpers:load_config(emqx_gateway_schema, ?CONF_DEFAULT),
     emqx_mgmt_api_test_util:init_suite([emqx_gateway]),
     Config.
 
diff --git a/apps/emqx_gateway/test/emqx_stomp_SUITE.erl b/apps/emqx_gateway/test/emqx_stomp_SUITE.erl
index 53aae7562..7c507d3fc 100644
--- a/apps/emqx_gateway/test/emqx_stomp_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_stomp_SUITE.erl
@@ -49,7 +49,7 @@ all() -> emqx_common_test_helpers:all(?MODULE).
 %%--------------------------------------------------------------------
 
 init_per_suite(Cfg) ->
-    ok = emqx_config:init_load(emqx_gateway_schema, ?CONF_DEFAULT),
+    ok = emqx_common_test_helpers:load_config(emqx_gateway_schema, ?CONF_DEFAULT),
     emqx_mgmt_api_test_util:init_suite([emqx_gateway]),
     Cfg.
 
diff --git a/apps/emqx_modules/test/emqx_event_message_SUITE.erl b/apps/emqx_modules/test/emqx_event_message_SUITE.erl
index e38945131..40f00b513 100644
--- a/apps/emqx_modules/test/emqx_event_message_SUITE.erl
+++ b/apps/emqx_modules/test/emqx_event_message_SUITE.erl
@@ -38,7 +38,7 @@ all() -> emqx_common_test_helpers:all(?MODULE).
 init_per_suite(Config) ->
     emqx_common_test_helpers:boot_modules(all),
     emqx_common_test_helpers:start_apps([emqx_modules]),
-    ok = emqx_config:init_load(emqx_modules_schema, ?EVENT_MESSAGE),
+    ok = emqx_common_test_helpers:load_config(emqx_modules_schema, ?EVENT_MESSAGE),
     Config.
 
 end_per_suite(_Config) ->
diff --git a/apps/emqx_modules/test/emqx_modules_conf_SUITE.erl b/apps/emqx_modules/test/emqx_modules_conf_SUITE.erl
index 0f555e780..c79153cba 100644
--- a/apps/emqx_modules/test/emqx_modules_conf_SUITE.erl
+++ b/apps/emqx_modules/test/emqx_modules_conf_SUITE.erl
@@ -29,7 +29,7 @@ all() ->
     emqx_common_test_helpers:all(?MODULE).
 
 init_per_suite(Conf) ->
-    emqx_config:init_load(emqx_modules_schema, <<"gateway {}">>),
+    emqx_common_test_helpers:load_config(emqx_modules_schema, <<"gateway {}">>),
     emqx_common_test_helpers:start_apps([emqx_conf, emqx_modules]),
     Conf.
 
diff --git a/apps/emqx_modules/test/emqx_rewrite_SUITE.erl b/apps/emqx_modules/test/emqx_rewrite_SUITE.erl
index 92aaa7300..f51642d30 100644
--- a/apps/emqx_modules/test/emqx_rewrite_SUITE.erl
+++ b/apps/emqx_modules/test/emqx_rewrite_SUITE.erl
@@ -112,7 +112,7 @@ t_rewrite_re_error(_Config) ->
     ok.
 
 t_list(_Config) ->
-    ok = emqx_config:init_load(emqx_modules_schema, ?REWRITE),
+    ok = emqx_common_test_helpers:load_config(emqx_modules_schema, ?REWRITE),
     Expect = [
         #{<<"action">> => <<"publish">>,
             <<"dest_topic">> => <<"z/y/$1">>,
@@ -130,7 +130,7 @@ t_list(_Config) ->
     ok.
 
 t_update(_Config) ->
-    ok = emqx_config:init_load(emqx_modules_schema, ?REWRITE),
+    ok = emqx_common_test_helpers:load_config(emqx_modules_schema, ?REWRITE),
     Init = emqx_rewrite:list(),
     Rules = [#{
         <<"source_topic">> => <<"test/#">>,
@@ -144,7 +144,7 @@ t_update(_Config) ->
     ok.
 
 t_update_disable(_Config) ->
-    ok = emqx_config:init_load(emqx_modules_schema, ?REWRITE),
+    ok = emqx_common_test_helpers:load_config(emqx_modules_schema, ?REWRITE),
     ?assertEqual(ok, emqx_rewrite:update([])),
     timer:sleep(150),
 
@@ -159,7 +159,7 @@ t_update_disable(_Config) ->
     ok.
 
 t_update_re_failed(_Config) ->
-    ok = emqx_config:init_load(emqx_modules_schema, ?REWRITE),
+    ok = emqx_common_test_helpers:load_config(emqx_modules_schema, ?REWRITE),
     Rules = [#{
         <<"source_topic">> => <<"test/#">>,
         <<"re">> => <<"*^test/*">>,
@@ -188,7 +188,7 @@ receive_publish(Timeout) ->
     end.
 
 init() ->
-    ok = emqx_config:init_load(emqx_modules_schema, ?REWRITE),
+    ok = emqx_common_test_helpers:load_config(emqx_modules_schema, ?REWRITE),
     ok = emqx_rewrite:enable(),
     {ok, C} = emqtt:start_link([{clientid, <<"rewrite_client">>}]),
     {ok, _} = emqtt:connect(C),
diff --git a/apps/emqx_modules/test/emqx_topic_metrics_SUITE.erl b/apps/emqx_modules/test/emqx_topic_metrics_SUITE.erl
index 44fd6e109..cae3d4917 100644
--- a/apps/emqx_modules/test/emqx_topic_metrics_SUITE.erl
+++ b/apps/emqx_modules/test/emqx_topic_metrics_SUITE.erl
@@ -30,7 +30,7 @@ all() -> emqx_common_test_helpers:all(?MODULE).
 init_per_suite(Config) ->
     emqx_common_test_helpers:boot_modules(all),
     emqx_common_test_helpers:start_apps([emqx_modules]),
-    ok = emqx_config:init_load(emqx_modules_schema, ?TOPIC),
+    ok = emqx_common_test_helpers:load_config(emqx_modules_schema, ?TOPIC),
     Config.
 
 end_per_suite(_Config) ->
diff --git a/apps/emqx_retainer/test/emqx_retainer_SUITE.erl b/apps/emqx_retainer/test/emqx_retainer_SUITE.erl
index 54e19e42c..c25dbae2e 100644
--- a/apps/emqx_retainer/test/emqx_retainer_SUITE.erl
+++ b/apps/emqx_retainer/test/emqx_retainer_SUITE.erl
@@ -57,7 +57,7 @@ init_per_suite(Config) ->
     meck:expect(emqx_alarm, activate, 3, ok),
     meck:expect(emqx_alarm, deactivate, 3, ok),
 
-    ok = emqx_config:init_load(emqx_retainer_schema, ?BASE_CONF),
+    ok = emqx_common_test_helpers:load_config(emqx_retainer_schema, ?BASE_CONF),
     emqx_common_test_helpers:start_apps([emqx_retainer]),
     Config.
 
diff --git a/apps/emqx_rule_engine/test/emqx_rule_engine_api_SUITE.erl b/apps/emqx_rule_engine/test/emqx_rule_engine_api_SUITE.erl
index 4dd564b36..39532a41a 100644
--- a/apps/emqx_rule_engine/test/emqx_rule_engine_api_SUITE.erl
+++ b/apps/emqx_rule_engine/test/emqx_rule_engine_api_SUITE.erl
@@ -13,7 +13,7 @@ all() ->
 
 init_per_suite(Config) ->
     application:load(emqx_conf),
-    ok = emqx_config:init_load(emqx_rule_engine_schema, ?CONF_DEFAULT),
+    ok = emqx_common_test_helpers:load_config(emqx_rule_engine_schema, ?CONF_DEFAULT),
     ok = emqx_common_test_helpers:start_apps([emqx_conf, emqx_rule_engine]),
     Config.
 
diff --git a/apps/emqx_slow_subs/test/emqx_slow_subs_SUITE.erl b/apps/emqx_slow_subs/test/emqx_slow_subs_SUITE.erl
index 8111fba31..79c4bb600 100644
--- a/apps/emqx_slow_subs/test/emqx_slow_subs_SUITE.erl
+++ b/apps/emqx_slow_subs/test/emqx_slow_subs_SUITE.erl
@@ -40,7 +40,7 @@ all() ->
     emqx_common_test_helpers:all(?MODULE).
 
 init_per_suite(Config) ->
-    ok = emqx_config:init_load(emqx_slow_subs_schema, ?BASE_CONF),
+    ok = emqx_common_test_helpers:load_config(emqx_slow_subs_schema, ?BASE_CONF),
     emqx_common_test_helpers:start_apps([emqx_slow_subs]),
     Config.
 
diff --git a/apps/emqx_slow_subs/test/emqx_slow_subs_api_SUITE.erl b/apps/emqx_slow_subs/test/emqx_slow_subs_api_SUITE.erl
index 832735054..fc2162863 100644
--- a/apps/emqx_slow_subs/test/emqx_slow_subs_api_SUITE.erl
+++ b/apps/emqx_slow_subs/test/emqx_slow_subs_api_SUITE.erl
@@ -57,7 +57,7 @@ init_per_suite(Config) ->
     meck:expect(emqx_alarm, activate, 3, ok),
     meck:expect(emqx_alarm, deactivate, 3, ok),
 
-    ok = emqx_config:init_load(emqx_slow_subs_schema, ?CONF_DEFAULT),
+    ok = emqx_common_test_helpers:load_config(emqx_slow_subs_schema, ?CONF_DEFAULT),
     emqx_mgmt_api_test_util:init_suite([emqx_slow_subs]),
     {ok, _} = application:ensure_all_started(emqx_authn),
     Config.