feat(mdns): Add test template for mdns-sender

Author: david-cermak

.github/workflows/mdns__host-tests.yml

@@ -98,6 +98,11 @@ jobs:
           cmake -DUNIT_TESTS=test_receiver ..
           cmake --build .
           ctest --extra-verbose
+          cd ..
+          mkdir build3 && cd build3
+          cmake -DUNIT_TESTS=test_sender ..
+          cmake --build .
+          ctest --extra-verbose
 
 
   fuzz_test:

components/mdns/tests/host_unit_test/unity/test_receiver/test_receiver.c

@@ -7,6 +7,9 @@
 #include "unity.h"
 #include "create_test_packet.h"
 #include "unity_main.h"
+#include "mock_mdns_pcb.h"
+#include "mock_mdns_send.h"
+#include "create_test_packet.h"
 
 static void test_mdns_hostname_queries(void)
 {
@@ -58,6 +61,23 @@ static void test_mdns_with_answers(void)
 
 }
 
+static void mdns_priv_create_answer_from_parsed_packet_Callback(mdns_parsed_packet_t* parsed_packet, int cmock_num_calls)
+{
+    printf("callback\n");
+}
+
+void setup_cmock(void)
+{
+    mdns_priv_probe_all_pcbs_CMockIgnore();
+    mdns_priv_pcb_announce_CMockIgnore();
+    mdns_priv_pcb_send_bye_service_CMockIgnore();
+    mdns_priv_pcb_check_probing_services_CMockIgnore();
+    mdns_priv_pcb_is_after_probing_IgnoreAndReturn(true);
+
+    _mdns_clear_tx_queue_head_CMockIgnore();
+    _mdns_remove_scheduled_service_packets_CMockIgnore();
+    mdns_priv_create_answer_from_parsed_packet_Stub(mdns_priv_create_answer_from_parsed_packet_Callback);
+}
 
 void run_unity_tests(void)
 {

components/mdns/tests/host_unit_test/unity/test_sender/test_sender.c

@@ -0,0 +1,40 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Unlicense OR CC0-1.0
+ */
+
+#include "unity.h"
+#include "unity_main.h"
+#include "mock_mdns_pcb.h"
+#include "mdns_send.h"
+
+void setup_cmock(void)
+{
+    mdns_priv_probe_all_pcbs_CMockIgnore();
+    mdns_priv_pcb_announce_CMockIgnore();
+    mdns_priv_pcb_send_bye_service_CMockIgnore();
+    mdns_priv_pcb_check_probing_services_CMockIgnore();
+    mdns_priv_pcb_is_after_probing_IgnoreAndReturn(true);
+}
+
+
+
+// Example of a more complex test with answers and additional records
+static void test_dispatch_tx_packet(void)
+{
+    mdns_tx_packet_t p = {};
+    _mdns_dispatch_tx_packet(&p);
+}
+
+
+void run_unity_tests(void)
+{
+    UNITY_BEGIN();
+
+    // Run hostname queries test
+    RUN_TEST(test_dispatch_tx_packet);
+
+
+    UNITY_END();
+}

components/mdns/tests/host_unit_test/unity/test_sender/unit_test.cmake

@@ -0,0 +1,6 @@
+# Testing mDNS sender, need to mock pbb
+set(MOCK_FILES
+        "mdns_pcb"
+)
+
+list(APPEND SOURCES unity/${UNIT_TESTS}/test_sender.c)

components/mdns/tests/host_unit_test/unity/unity_main.c

@@ -12,9 +12,6 @@
 #include "mdns_receive.h"
 #include "mdns_responder.h"
 #include "mdns_mem_caps.h"
-#include "mock_mdns_pcb.h"
-#include "mock_mdns_send.h"
-#include "create_test_packet.h"
 
 void setUp(void)
 {
@@ -132,24 +129,12 @@ void test_mdns_receive_from_file(const char* filename)
 
 
 void run_unity_tests(void);
-
-void mdns_priv_create_answer_from_parsed_packet_Callback(mdns_parsed_packet_t* parsed_packet, int cmock_num_calls)
-{
-    printf("callback\n");
-}
+void setup_cmock(void);
 
 int main(int argc, char **argv)
 {
     if (argc >= 2 && strcmp(argv[1], "--test") == 0) {
-        mdns_priv_probe_all_pcbs_CMockIgnore();
-        mdns_priv_pcb_announce_CMockIgnore();
-        mdns_priv_pcb_send_bye_service_CMockIgnore();
-        mdns_priv_pcb_check_probing_services_CMockIgnore();
-        mdns_priv_pcb_is_after_probing_IgnoreAndReturn(true);
-
-        _mdns_clear_tx_queue_head_CMockIgnore();
-        _mdns_remove_scheduled_service_packets_CMockIgnore();
-        mdns_priv_create_answer_from_parsed_packet_Stub(mdns_priv_create_answer_from_parsed_packet_Callback);
+        setup_cmock();
 
         init_responder();
         run_unity_tests();