Restructure the project tree for unit testing

Restructure the whole project tree so that the component can be unit tested. Also update some cmake files to update the modified paths, update test cases etc.

app_test/CMakeLists.txt

@@ -0,0 +1,13 @@
+cmake_minimum_required(VERSION 3.5)
+
+# Define component search paths
+# IMPORTANT: We should tell to the ESP-IDF
+# where it can find relay_chn component.
+# We add the 'relay_chn' directory to the COMPONENT_DIRS by specifying: ../relay_chn
+set(EXTRA_COMPONENT_DIRS "${CMAKE_CURRENT_SOURCE_DIR}/../relay_chn")
+
+# Include ESP-IDF project build system
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+
+# Define the name of this project
+project(relay_chn_app_test)

app_test/main/CMakeLists.txt

@@ -0,0 +1,3 @@
+idf_component_register(SRCS "test_relay_chn.c"
+                       INCLUDE_DIRS "."
+                       REQUIRES unity relay_chn)

app_test/main/test_relay_chn.c

@@ -2,6 +2,9 @@
 #include "unity.h"
 #include "unity_test_utils.h"
 #include "relay_chn.h"
+#include <esp_log.h>
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
 
 
 const gpio_num_t gpio_map[] = {GPIO_NUM_4, GPIO_NUM_5, GPIO_NUM_18, GPIO_NUM_19};
@@ -27,7 +30,7 @@ void tearDown(void) {
     for (uint8_t i = 0; i < relay_chn_count; i++) {
         relay_chn_stop(i);
     }
-    vTaskDelay(pdMS_to_TICKS(100));
+    vTaskDelay(pdMS_TO_TICKS(100));
 }
 
 TEST_CASE("Relay channels run forward and update state", "[relay_chn][forward]")
@@ -91,3 +94,11 @@ TEST_CASE("Relay channels do not change state for invalid channel", "[relay_chn]
     relay_chn_flip_direction(relay_chn_count);
     check_channels_state_unchanged();
 }
+
+void app_main(void) {
+    ESP_LOGI("APP_MAIN", "Starting relay_chn unit tests...");
+    unity_run_all_tests();
+    ESP_LOGI("APP_MAIN", "All relay_chn tests completed. Restarting in 10 seconds...");
+    vTaskDelay(pdMS_TO_TICKS(10000));
+    esp_restart();
+}

test/CMakeLists.txt

@@ -1,8 +0,0 @@
-# Create a component for test component
-idf_component_register(SRCS_DIRS "."
-                       INCLUDE_DIRS "."
-                       REQUIRES unity relay_chn)
-
-# Mark this as a test component
-# 'relay_chn' is the name of the main component.
-idf_build_set_property(TEST_COMPONENTS "relay_chn" APPEND)