test: add functional tests for autoping (XEP-0199)

- autoping_set_interval: verify /autoping set command
- autoping_set_zero_disables: verify disabling autoping
- autoping_timeout_set: verify /autoping timeout command
- autoping_timeout_zero_disables: verify disabling timeout
- autoping_sends_ping_after_interval: verify automatic ping IQ
- autoping_server_not_supporting_ping: verify error handling

Fast tests (command parsing) in Group 1, slow tests (timer-based) in Group 3.

Makefile.am

@@ -186,6 +186,7 @@ functionaltest_sources = \
 	tests/functionaltests/test_muc.c tests/functionaltests/test_muc.h \
 	tests/functionaltests/test_disconnect.c tests/functionaltests/test_disconnect.h \
 	tests/functionaltests/test_lastactivity.c tests/functionaltests/test_lastactivity.h \
+	tests/functionaltests/test_autoping.c tests/functionaltests/test_autoping.h \
 	tests/functionaltests/functionaltests.c
 
 main_source = src/main.c

tests/functionaltests/functionaltests.c

@@ -15,9 +15,9 @@
  * functional tests run less frequently than unit tests.
  *
  * Tests are organized into groups for better maintainability and parallel execution:
- *   Group 1: Connect, Ping, Rooms, Software
+ *   Group 1: Connect, Ping, Autoping (fast), Rooms, Software, Last Activity
  *   Group 2: Message, Receipts, Roster, Chat Session
- *   Group 3: Presence, Disconnect
+ *   Group 3: Presence, Disconnect, Autoping (slow)
  *   Group 4: MUC, Carbons
  *
  * Parallel execution:
@@ -53,6 +53,7 @@
 #include "test_muc.h"
 #include "test_disconnect.h"
 #include "test_lastactivity.h"
+#include "test_autoping.h"
 
 /* Macro to wrap each test with setup/teardown functions */
 #define PROF_FUNC_TEST(test) cmocka_unit_test_setup_teardown(test, init_prof_test, close_prof_test)
@@ -95,6 +96,12 @@ main(int argc, char* argv[])
         PROF_FUNC_TEST(ping_jid),
         PROF_FUNC_TEST(ping_jid_not_supported),
 
+        /* Autoping command tests - fast, no waiting */
+        PROF_FUNC_TEST(autoping_set_interval),
+        PROF_FUNC_TEST(autoping_set_zero_disables),
+        PROF_FUNC_TEST(autoping_timeout_set),
+        PROF_FUNC_TEST(autoping_timeout_zero_disables),
+
         /* Room discovery - XEP-0045 */
         PROF_FUNC_TEST(rooms_query),
 
@@ -165,6 +172,10 @@ main(int argc, char* argv[])
 
         /* Disconnect - clean session termination */
         PROF_FUNC_TEST(disconnect_ends_session),
+
+        /* Autoping slow tests - require sleep for timer triggers */
+        PROF_FUNC_TEST(autoping_sends_ping_after_interval),
+        PROF_FUNC_TEST(autoping_server_not_supporting_ping),
     };
 
     /* ============================================================

tests/functionaltests/test_autoping.c

@@ -0,0 +1,120 @@
+#include <glib.h>
+#include "prof_cmocka.h"
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <stabber.h>
+
+#include "proftest.h"
+
+void
+autoping_set_interval(void** state)
+{
+    prof_connect();
+
+    prof_input("/autoping set 60");
+    assert_true(prof_output_exact("Autoping interval set to 60 seconds."));
+}
+
+void
+autoping_set_zero_disables(void** state)
+{
+    prof_connect();
+
+    prof_input("/autoping set 0");
+    assert_true(prof_output_exact("Autoping disabled."));
+}
+
+void
+autoping_timeout_set(void** state)
+{
+    prof_connect();
+
+    prof_input("/autoping timeout 30");
+    assert_true(prof_output_exact("Autoping timeout set to 30 seconds."));
+}
+
+void
+autoping_timeout_zero_disables(void** state)
+{
+    prof_connect();
+
+    prof_input("/autoping timeout 0");
+    assert_true(prof_output_exact("Autoping timeout disabled."));
+}
+
+void
+autoping_sends_ping_after_interval(void** state)
+{
+    /*
+     * This test verifies that autoping sends a ping IQ after the configured
+     * interval. We set a short interval (2 seconds) and verify the ping is sent.
+     */
+
+    // Register disco#info response with ping support
+    stbbr_for_query("http://jabber.org/protocol/disco#info",
+        "<iq to='stabber@localhost/profanity' type='result' from='localhost'>"
+            "<query xmlns='http://jabber.org/protocol/disco#info'>"
+                "<identity category='server' type='im' name='Stabber'/>"
+                "<feature var='urn:xmpp:ping'/>"
+            "</query>"
+        "</iq>"
+    );
+
+    // Register ping response
+    stbbr_for_query("urn:xmpp:ping",
+        "<iq from='localhost' to='stabber@localhost/profanity' type='result'/>"
+    );
+
+    prof_connect();
+
+    // Wait for disco exchange
+    sleep(2);
+
+    // Set short autoping interval
+    prof_input("/autoping set 2");
+    assert_true(prof_output_exact("Autoping interval set to 2 seconds."));
+
+    // Wait for autoping to trigger (interval + some buffer)
+    sleep(4);
+
+    // Verify ping was sent (no 'to' attribute means server ping)
+    assert_true(stbbr_received(
+        "<iq id='*' type='get'>"
+            "<ping xmlns='urn:xmpp:ping'/>"
+        "</iq>"
+    ));
+}
+
+void
+autoping_server_not_supporting_ping(void** state)
+{
+    /*
+     * When server doesn't support ping, autoping should show error.
+     */
+
+    // Register disco#info response WITHOUT ping support
+    stbbr_for_query("http://jabber.org/protocol/disco#info",
+        "<iq to='stabber@localhost/profanity' type='result' from='localhost'>"
+            "<query xmlns='http://jabber.org/protocol/disco#info'>"
+                "<identity category='server' type='im' name='Stabber'/>"
+            "</query>"
+        "</iq>"
+    );
+
+    prof_connect();
+
+    // Wait for disco exchange
+    sleep(2);
+
+    // Set short autoping interval
+    prof_input("/autoping set 2");
+    assert_true(prof_output_exact("Autoping interval set to 2 seconds."));
+
+    // Wait for autoping to trigger
+    sleep(4);
+
+    // Should show error about ping not being supported
+    assert_true(prof_output_regex("Server ping not supported"));
+}

tests/functionaltests/test_autoping.h

@@ -0,0 +1,6 @@
+void autoping_set_interval(void** state);
+void autoping_set_zero_disables(void** state);
+void autoping_timeout_set(void** state);
+void autoping_timeout_zero_disables(void** state);
+void autoping_sends_ping_after_interval(void** state);
+void autoping_server_not_supporting_ping(void** state);