test(autoping): add test for autoping warning exclusion on subdomain services

The new test verifies that disco#info responses from subdomain services
(e.g., conference servers) do not trigger the autoping warning, ensuring
the check is correctly restricted to the server's own domain.

tests/functionaltests/functionaltests.c

@@ -156,6 +156,7 @@ main(int argc, char* argv[])
         PROF_FUNC_TEST(autoping_warning_not_shown_when_autoping_enabled),
         PROF_FUNC_TEST(autoping_warning_not_shown_when_user_disabled),
         PROF_FUNC_TEST(autoping_warning_not_shown_for_user_jid),
+        PROF_FUNC_TEST(autoping_warning_not_shown_for_subdomain_service),
 
         /* Service Discovery - XEP-0030 */
         PROF_FUNC_TEST(disco_info_shows_identity),

tests/functionaltests/test_autoping.c

@@ -231,3 +231,25 @@ autoping_warning_not_shown_for_user_jid(void** state)
     prof_timeout(NEGATIVE_ASSERT_TIMEOUT);
     assert_false(prof_output_regex(AUTOPING_WARNING_MATCH));
 }
+
+void
+autoping_warning_not_shown_for_subdomain_service(void** state)
+{
+    // disco#info from a subdomain service should not trigger the warning, only the server's own domain should
+    stbbr_for_query("http://jabber.org/protocol/disco#info",
+        "<iq to='stabber@localhost/profanity' type='result' from='conf.localhost'>"
+            "<query xmlns='http://jabber.org/protocol/disco#info'>"
+                "<identity category='conference' type='text' name='Conference Service'/>"
+                "<feature var='urn:xmpp:ping'/>"
+            "</query>"
+        "</iq>"
+    );
+
+    prof_input("/autoping set 0");
+    assert_true(prof_output_exact("Autoping disabled."));
+
+    prof_connect();
+
+    prof_timeout(NEGATIVE_ASSERT_TIMEOUT);
+    assert_false(prof_output_regex(AUTOPING_WARNING_MATCH));
+}

tests/functionaltests/test_autoping.h

@@ -9,3 +9,4 @@ void autoping_warning_not_shown_when_server_unsupported(void** state);
 void autoping_warning_not_shown_when_autoping_enabled(void** state);
 void autoping_warning_not_shown_when_user_disabled(void** state);
 void autoping_warning_not_shown_for_user_jid(void** state);
+void autoping_warning_not_shown_for_subdomain_service(void** state);