test: no shared subscription lost

test/emqx_broker_sup_SUITE.erl

@@ -0,0 +1,65 @@
+%%--------------------------------------------------------------------
+%% Copyright (c) 2022 EMQ Technologies Co., Ltd. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%--------------------------------------------------------------------
+
+-module(emqx_broker_sup_SUITE).
+
+-compile(export_all).
+-compile(nowarn_export_all).
+
+-define(APP, emqx).
+
+-include_lib("eunit/include/eunit.hrl").
+-include_lib("common_test/include/ct.hrl").
+
+-include_lib("emqx/include/emqx.hrl").
+-include_lib("emqx/include/emqx_mqtt.hrl").
+
+all() -> emqx_ct:all(?MODULE).
+
+init_per_suite(Config) ->
+    emqx_ct_helpers:boot_modules(all),
+    emqx_ct_helpers:start_apps([]),
+    Config.
+
+end_per_suite(_Config) ->
+    emqx_ct_helpers:stop_apps([]).
+
+init_per_testcase(Case, Config) ->
+    ?MODULE:Case({init, Config}).
+
+end_per_testcase(Case, Config) ->
+    ?MODULE:Case({'end', Config}).
+
+%%--------------------------------------------------------------------
+%% cases
+%%--------------------------------------------------------------------
+
+t_restart_shared_sub({init, Config}) ->
+    emqx:subscribe(<<"t/a">>, #{share => <<"groupa">>}),
+    true = exit(whereis(emqx_shared_sub), kill),
+    %% waiting for restart
+    timer:sleep(200), Config;
+t_restart_shared_sub(Config) when is_list(Config) ->
+    ?assert(is_pid(whereis(emqx_shared_sub))),
+    emqx:publish(emqx_message:make(<<"t/a">>, <<"Hi">>)),
+    ?assert(
+       receive
+           {deliver, _Topic, #message{payload = <<"Hi">>}} -> true
+       after 2000 ->
+                 false
+       end);
+t_restart_shared_sub({'end', Config}) ->
+    emqx:unsubscribe(<<"$share/grpa/t/a">>).