test(chan): verify hooks receive peercert until connected

apps/emqx/include/asserts.hrl

@@ -29,3 +29,33 @@
         )
     )
 ).
+
+-define(drainMailbox(),
+    (fun F__Flush_() ->
+        receive
+            X__Msg_ -> [X__Msg_ | F__Flush_()]
+        after 0 -> []
+        end
+    end)()
+).
+
+-define(assertReceive(PATTERN),
+    ?assertReceive(PATTERN, 1000)
+).
+
+-define(assertReceive(PATTERN, TIMEOUT),
+    (fun() ->
+        receive
+            X__V = PATTERN -> X__V
+        after TIMEOUT ->
+            erlang:error(
+                {assertReceive, [
+                    {module, ?MODULE},
+                    {line, ?LINE},
+                    {expression, (??PATTERN)},
+                    {mailbox, ?drainMailbox()}
+                ]}
+            )
+        end
+    end)()
+).

apps/emqx/test/emqx_client_SUITE.erl

@@ -22,6 +22,8 @@
 -import(lists, [nth/2]).
 
 -include_lib("emqx/include/emqx_mqtt.hrl").
+-include_lib("emqx/include/emqx_hooks.hrl").
+-include_lib("emqx/include/asserts.hrl").
 -include_lib("eunit/include/eunit.hrl").
 -include_lib("common_test/include/ct.hrl").
 -include_lib("snabbkaffe/include/snabbkaffe.hrl").
@@ -76,7 +78,7 @@ groups() ->
             t_certcn_as_clientid_default_config_tls,
             t_certcn_as_clientid_tlsv1_3,
             t_certcn_as_clientid_tlsv1_2,
-            t_no_peercert_after_connected
+            t_peercert_preserved_before_connected
         ]}
     ].
 
@@ -380,8 +382,18 @@ t_certcn_as_clientid_tlsv1_3(_) ->
 t_certcn_as_clientid_tlsv1_2(_) ->
     tls_certcn_as_clientid('tlsv1.2').
 
-t_no_peercert_after_connected(_) ->
-    emqx_config:put_zone_conf(default, [mqtt], #{}),
+t_peercert_preserved_before_connected(_) ->
+    ok = emqx_config:put_zone_conf(default, [mqtt], #{}),
+    ok = emqx_hooks:add(
+        'client.connect',
+        {?MODULE, on_hook, ['client.connect', self()]},
+        ?HP_HIGHEST
+    ),
+    ok = emqx_hooks:add(
+        'client.connected',
+        {?MODULE, on_hook, ['client.connected', self()]},
+        ?HP_HIGHEST
+    ),
     ClientId = atom_to_binary(?FUNCTION_NAME),
     SslConf = emqx_common_test_helpers:client_ssl_twoway(default),
     {ok, Client} = emqtt:start_link([
@@ -391,12 +403,21 @@ t_no_peercert_after_connected(_) ->
         {ssl_opts, SslConf}
     ]),
     {ok, _} = emqtt:connect(Client),
+    _ = ?assertReceive({'client.connect', #{peercert := PC}} when is_binary(PC)),
+    _ = ?assertReceive({'client.connected', #{peercert := PC}} when is_binary(PC)),
     [ConnPid] = emqx_cm:lookup_channels(ClientId),
     ?assertMatch(
         #{conninfo := ConnInfo} when not is_map_key(peercert, ConnInfo),
         emqx_connection:info(ConnPid)
     ).
 
+on_hook(ConnInfo, _, 'client.connect' = HP, Pid) ->
+    _ = Pid ! {HP, ConnInfo},
+    ok;
+on_hook(_ClientInfo, ConnInfo, 'client.connected' = HP, Pid) ->
+    _ = Pid ! {HP, ConnInfo},
+    ok.
+
 %%--------------------------------------------------------------------
 %% Helper functions
 %%--------------------------------------------------------------------