diff --git a/apps/emqx_gateway/test/emqx_gateway_SUITE.erl b/apps/emqx_gateway/test/emqx_gateway_SUITE.erl
index d5e6f52b3..ac351cdee 100644
--- a/apps/emqx_gateway/test/emqx_gateway_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_gateway_SUITE.erl
@@ -36,10 +36,7 @@ init_per_suite(Config) ->
     Apps = emqx_cth_suite:start(
         [
             {emqx_conf, ?CONF_DEFAULT},
-            emqx_gateway,
-            emqx_auth,
-            emqx_auth_redis,
-            emqx_auth_mnesia
+            emqx_gateway
         ],
         #{work_dir => emqx_cth_suite:work_dir(Config)}
     ),
@@ -50,25 +47,6 @@ end_per_suite(Config) ->
     emqx_config:delete_override_conf_files(),
     ok.
 
-init_per_testcase(t_get_basic_usage_info_2, Config) ->
-    DataDir = ?config(data_dir, Config),
-    application:stop(emqx_gateway),
-    ok = setup_fake_usage_data(DataDir),
-    Config;
-init_per_testcase(_TestCase, Config) ->
-    Config.
-
-end_per_testcase(t_get_basic_usage_info_2, _Config) ->
-    emqx_gateway_cm:unregister_channel(lwm2m, <<"client_id">>),
-    emqx_config:put([gateway], #{}),
-    emqx_common_test_helpers:stop_apps([emqx_gateway]),
-    emqx_config:erase(gateway),
-    emqx_common_test_helpers:load_config(emqx_gateway_schema, ?CONF_DEFAULT),
-    emqx_common_test_helpers:start_apps([emqx_gateway]),
-    ok;
-end_per_testcase(_TestCase, _Config) ->
-    ok.
-
 %%--------------------------------------------------------------------
 %% cases
 %%--------------------------------------------------------------------
@@ -160,27 +138,8 @@ t_get_basic_usage_info_1(_Config) ->
                 }
         },
         emqx_gateway:get_basic_usage_info()
-    ).
-
-t_get_basic_usage_info_2(_Config) ->
-    ?assertEqual(
-        #{
-            lwm2m =>
-                #{
-                    authn => <<"password_based:redis">>,
-                    listeners =>
-                        [
-                            #{
-                                authn =>
-                                    <<"password_based:built_in_database">>,
-                                type => udp
-                            }
-                        ],
-                    num_clients => 1
-                }
-        },
-        emqx_gateway:get_basic_usage_info()
-    ).
+    ),
+    ok = emqx_gateway:unload(?GWNAME).
 
 %%--------------------------------------------------------------------
 %% helper functions
diff --git a/apps/emqx_gateway/test/emqx_gateway_api_SUITE.erl b/apps/emqx_gateway/test/emqx_gateway_api_SUITE.erl
index 6e2afe105..e74b25a06 100644
--- a/apps/emqx_gateway/test/emqx_gateway_api_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_gateway_api_SUITE.erl
@@ -48,8 +48,6 @@ init_per_suite(Conf) ->
     Apps = emqx_cth_suite:start(
         [
             emqx_conf,
-            emqx_auth,
-            emqx_auth_mnesia,
             emqx_management,
             {emqx_dashboard, "dashboard.listeners.http { enable = true, bind = 18083 }"},
             {emqx_gateway, ?CONF_DEFAULT}
@@ -62,7 +60,8 @@ init_per_suite(Conf) ->
 
 end_per_suite(Conf) ->
     _ = emqx_common_test_http:delete_default_app(),
-    ok = emqx_cth_suite:stop(proplists:get_value(suite_apps, Conf)).
+    ok = emqx_cth_suite:stop(proplists:get_value(suite_apps, Conf)),
+    emqx_config:delete_override_conf_files().
 
 init_per_testcase(t_gateway_fail, Config) ->
     meck:expect(
diff --git a/apps/emqx_gateway/test/emqx_gateway_authn_SUITE.erl b/apps/emqx_gateway/test/emqx_gateway_authn_SUITE.erl
index 1489f8a55..936856c2e 100644
--- a/apps/emqx_gateway/test/emqx_gateway_authn_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_gateway_authn_SUITE.erl
@@ -57,8 +57,6 @@ init_per_group(AuthName, Conf) ->
     Apps = emqx_cth_suite:start(
         [
             emqx_conf,
-            emqx_auth,
-            emqx_auth_http,
             emqx_management,
             {emqx_dashboard, "dashboard.listeners.http { enable = true, bind = 18083 }"},
             {emqx_gateway, emqx_gateway_auth_ct:list_gateway_conf()}
@@ -73,6 +71,7 @@ init_per_group(AuthName, Conf) ->
 end_per_group(AuthName, Conf) ->
     ok = emqx_gateway_auth_ct:stop_auth(AuthName),
     _ = emqx_common_test_http:delete_default_app(),
+    emqx_config:delete_override_conf_files(),
     ok = emqx_cth_suite:stop(?config(group_apps, Conf)),
     Conf.
 
diff --git a/apps/emqx_gateway/test/emqx_gateway_authz_SUITE.erl b/apps/emqx_gateway/test/emqx_gateway_authz_SUITE.erl
index 45f716a9e..5b262158f 100644
--- a/apps/emqx_gateway/test/emqx_gateway_authz_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_gateway_authz_SUITE.erl
@@ -57,8 +57,6 @@ init_per_group(AuthName, Conf) ->
     Apps = emqx_cth_suite:start(
         [
             {emqx_conf, "authorization { no_match = deny, cache { enable = false } }"},
-            emqx_auth,
-            emqx_auth_http,
             {emqx_gateway, emqx_gateway_auth_ct:list_gateway_conf()}
             | emqx_gateway_test_utils:all_gateway_apps()
         ],
diff --git a/apps/emqx_gateway/test/emqx_gateway_cli_SUITE.erl b/apps/emqx_gateway/test/emqx_gateway_cli_SUITE.erl
index 2281262df..5ec956f31 100644
--- a/apps/emqx_gateway/test/emqx_gateway_cli_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_gateway_cli_SUITE.erl
@@ -20,6 +20,7 @@
 -compile(nowarn_export_all).
 
 -include_lib("eunit/include/eunit.hrl").
+-include_lib("common_test/include/ct.hrl").
 
 -define(GP(S), begin
     S,
@@ -29,13 +30,6 @@
     end
 end).
 
-%% this parses to #{}, will not cause config cleanup
-%% so we will need call emqx_config:erase
--define(CONF_DEFAULT, <<
-    "\n"
-    "gateway {}\n"
->>).
-
 %% The config with json format for mqtt-sn gateway
 -define(CONF_MQTTSN,
     "\n"
@@ -65,13 +59,18 @@ all() -> emqx_common_test_helpers:all(?MODULE).
 init_per_suite(Conf) ->
     emqx_config:erase(gateway),
     emqx_gateway_test_utils:load_all_gateway_apps(),
-    emqx_common_test_helpers:load_config(emqx_gateway_schema, ?CONF_DEFAULT),
-    emqx_mgmt_api_test_util:init_suite([emqx_conf, emqx_auth, emqx_gateway]),
-    Conf.
+    Apps = emqx_cth_suite:start(
+        [
+            {emqx_conf, <<"gateway {}">>},
+            emqx_gateway
+        ],
+        #{work_dir => emqx_cth_suite:work_dir(Conf)}
+    ),
+    [{suite_apps, Apps} | Conf].
 
 end_per_suite(Conf) ->
-    emqx_mgmt_api_test_util:end_suite([emqx_gateway, emqx_auth, emqx_conf]),
-    Conf.
+    emqx_cth_suite:stop(?config(suite_apps, Conf)),
+    emqx_config:delete_override_conf_files().
 
 init_per_testcase(_, Conf) ->
     Self = self(),
diff --git a/apps/emqx_gateway/test/emqx_gateway_conf_SUITE.erl b/apps/emqx_gateway/test/emqx_gateway_conf_SUITE.erl
index a600d7915..e084214bf 100644
--- a/apps/emqx_gateway/test/emqx_gateway_conf_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_gateway_conf_SUITE.erl
@@ -28,6 +28,7 @@
 ).
 
 -include_lib("eunit/include/eunit.hrl").
+-include_lib("common_test/include/ct.hrl").
 
 %%--------------------------------------------------------------------
 %% Setups
@@ -38,12 +39,17 @@ all() ->
 
 init_per_suite(Conf) ->
     emqx_gateway_test_utils:load_all_gateway_apps(),
-    emqx_common_test_helpers:load_config(emqx_gateway_schema, <<"gateway {}">>),
-    emqx_common_test_helpers:start_apps([emqx_conf, emqx_auth, emqx_auth_mnesia, emqx_gateway]),
-    Conf.
+    Apps = emqx_cth_suite:start(
+        [
+            {emqx_conf, <<"gateway {}">>},
+            emqx_gateway
+        ],
+        #{work_dir => emqx_cth_suite:work_dir(Conf)}
+    ),
+    [{suite_apps, Apps} | Conf].
 
-end_per_suite(_Conf) ->
-    emqx_common_test_helpers:stop_apps([emqx_gateway, emqx_auth, emqx_auth_mnesia, emqx_conf]),
+end_per_suite(Conf) ->
+    emqx_cth_suite:stop(?config(suite_apps, Conf)),
     emqx_config:delete_override_conf_files().
 
 init_per_testcase(_CaseName, Conf) ->