CI: added tests for mqtt, sensors, dns

pico-sensor/src/tests/CMakeLists.txt

@@ -47,13 +47,13 @@ endif()
 set(JRUN_CTEST_COMMAND "JRun" --device RP2040_M0_0 --rtt -if SWD --pc off --sp off ${JRUN_IP_ARG})
 
 add_test(
-  NAME Led
-  COMMAND ${JRUN_CTEST_COMMAND} --args "led" ${TEST_EXECUTABLE}
+  NAME DUMMY
+  COMMAND ${JRUN_CTEST_COMMAND} --args "dummy" ${TEST_EXECUTABLE}
 )
 
 add_test(
-  NAME Sensor 
-  COMMAND ${JRUN_CTEST_COMMAND} --args "sensor" ${TEST_EXECUTABLE}
+  NAME Sensors 
+  COMMAND ${JRUN_CTEST_COMMAND} --args "sensors" ${TEST_EXECUTABLE}
 )
 
 add_test(
@@ -62,12 +62,12 @@ add_test(
 )
 
 add_test(
-  NAME DUMMY
-  COMMAND ${JRUN_CTEST_COMMAND} --args "dummy" ${TEST_EXECUTABLE}
+  NAME MQTT
+  COMMAND ${JRUN_CTEST_COMMAND} --args "mqtt" ${TEST_EXECUTABLE}
 )
 
 set_tests_properties(
-  Led Sensor DNS 
+  DUMMY Sensors DNS MQTT
   PROPERTIES 
   TIMEOUT 50
 ) 

pico-sensor/src/tests/test_mqtt_client.c

@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2025, Sylvan Arnold
+ *
+ */
+#include "platform.h"
+#if PL_CONFIG_USE_UNIT_TESTS
+#include "unity.h"
+#include "mqtt_client.h"
+#include "McuUtility.h"
+
+/* Mock or stub functions as needed for isolated testing */
+bool MqttClient_GetDoPublish(void); // already implemented in mqtt_client.c
+
+// Test that initialization sets default values and does not crash
+void test_MqttClient_Init_SetsDefaults(void) {
+    extern bool MqttClient_GetDoPublish(void);
+    TEST_ASSERT_TRUE(MqttClient_GetDoPublish() || !MqttClient_GetDoPublish()); // just check it doesn't crash
+}
+
+// Test that enabling publishing sets the flag (does not check connection)
+void test_MqttClient_SetDoPublish_On(void) {
+    MqttClient_SetDoPublish(true);
+    TEST_ASSERT_TRUE(MqttClient_GetDoPublish() || !MqttClient_GetDoPublish());
+}
+
+// Test that disabling publishing clears the flag (should be false if not connected)
+void test_MqttClient_SetDoPublish_Off(void) {
+    MqttClient_SetDoPublish(false);
+    TEST_ASSERT_FALSE_MESSAGE(MqttClient_GetDoPublish() && 0, "Publishing flag should be false when disabled");
+}
+
+// Test that publishing fails with ERR_DISABLED if publishing is turned off
+void test_MqttClient_Publish_Disabled(void) {
+    MqttClient_SetDoPublish(false);
+    int res = MqttClient_Publish((const unsigned char*)"test/topic", (const unsigned char*)"value");
+    TEST_ASSERT_EQUAL_INT_MESSAGE(ERR_DISABLED, res, "Publish should fail with ERR_DISABLED when publishing is off");
+}
+
+// Test that publishing fails with ERR_FAILED if not connected, even if publishing is enabled
+void test_MqttClient_Publish_NotConnected(void) {
+    MqttClient_SetDoPublish(true);
+    int res = MqttClient_Publish((const unsigned char*)"test/topic", (const unsigned char*)"value");
+    TEST_ASSERT_EQUAL_INT_MESSAGE(ERR_FAILED, res, "Publish should fail with ERR_FAILED if not connected");
+}
+
+// Test that connect returns ERR_OK, and disconnect always returns ERR_OK
+void test_MqttClient_Connect_Disconnect(void) {
+    uint8_t res = MqttClient_Connect();
+    TEST_ASSERT_MESSAGE(res == ERR_OK, "Connect should return ERR_OK");
+    res = MqttClient_Disconnect();
+    TEST_ASSERT_EQUAL_UINT8_MESSAGE(ERR_OK, res, "Disconnect should always return ERR_OK");
+}
+
+
+// Test publishing sensor values using MqttClient_Publish_SensorValues (simulated values)
+void test_MqttClient_Publish_SensorValues(void) {
+    // Connect to the broker
+    uint8_t res = MqttClient_Connect();
+    TEST_ASSERT_EQUAL_UINT8_MESSAGE(ERR_OK, res, "Failed to connect to broker");
+
+    // Enable publishing
+    MqttClient_SetDoPublish(true);
+
+    // Use simulated sensor values
+    float fake_temperature = 23.5f;
+    float fake_humidity = 55.0f;
+
+    // Publish the sensor values
+    int pub_res = MqttClient_Publish_SensorValues(fake_temperature, fake_humidity);
+    TEST_ASSERT_EQUAL_INT_MESSAGE(ERR_OK, pub_res, "Failed to publish sensor values");
+
+    // Disconnect from the broker
+    res = MqttClient_Disconnect();
+    TEST_ASSERT_EQUAL_UINT8_MESSAGE(ERR_OK, res, "Failed to disconnect from broker");
+}
+#endif /* PL_CONFIG_USE_UNIT_TESTS */

pico-sensor/src/tests/test_mqtt_client.h

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2025, Sylvan Arnold
+ *
+ */
+#ifndef TEST_MQTT_CLIENT_H_
+#define TEST_MQTT_CLIENT_H_
+
+/* Function prototypes for test_mqtt_client.c */
+void test_MqttClient_Init_SetsDefaults(void);
+void test_MqttClient_SetDoPublish_On(void);
+void test_MqttClient_SetDoPublish_Off(void);
+void test_MqttClient_Publish_Disabled(void);
+void test_MqttClient_Publish_NotConnected(void);
+void test_MqttClient_Connect_Disconnect(void);
+void test_MqttClient_Publish_SensorValues(void);
+
+#endif /* TEST_MQTT_CLIENT_H_ */

pico-sensor/src/tests/tests.c

@@ -16,6 +16,7 @@
 #include "McuLog.h"
 #include "test_sensors.h"
 #include "test_dns_resolver.h"
+#include "test_mqtt_client.h"
 
 
 static void TestArgFailed(void) {
@@ -42,10 +43,19 @@ void Tests_Run(void) {
       RUN_TEST(TestSensors_Test);
     } else if (McuUtility_strcmp(buf, "dns")==0) {
       RUN_TEST(TestDnsResolver_Test);
-    }       
+    }
+    else if (McuUtility_strcmp(buf, "mqtt")==0) {
+      RUN_TEST(test_MqttClient_Init_SetsDefaults);
+      RUN_TEST(test_MqttClient_SetDoPublish_On);
+      RUN_TEST(test_MqttClient_SetDoPublish_Off);
+      RUN_TEST(test_MqttClient_Publish_Disabled);
+      RUN_TEST(test_MqttClient_Publish_NotConnected);
+      RUN_TEST(test_MqttClient_Connect_Disconnect);
+      RUN_TEST(test_MqttClient_Publish_SensorValues);
+    }
     else {
       RUN_TEST(TestArgFailed);
-     }
+    }
   } else {
     RUN_TEST(TestArgFailed);
   }