starting with component unit testing (running on device)

Signed-off-by: Peter Siegmund <developer@mars3142.org>

test/CMakeLists.txt

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+# This is the project CMakeLists.txt file for the test subproject
+cmake_minimum_required(VERSION 3.16)
+
+# Include the components directory of the main application:
+#
+set(EXTRA_COMPONENT_DIRS "../components")
+
+# Set the components to include the tests for.
+# This can be overriden from CMake cache:
+# - when invoking CMake directly: cmake -D TEST_COMPONENTS="xxxxx" ..
+# - when using idf.py: idf.py -T xxxxx build
+#
+set(TEST_COMPONENTS "logger" CACHE STRING "List of components to test")
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(component_unit_test)

test/Makefile

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+test:
+	@echo "Running tests..."
+	@idf.py fullclean build
+	pytest
+
+.PHONE: test

test/main/CMakeLists.txt

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+idf_component_register(SRCS "components_test.c"
+                    INCLUDE_DIRS ".")

test/main/components_test.c

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+#include <stdio.h>
+#include <string.h>
+#include "unity.h"
+
+static void print_banner(const char* text);
+
+void app_main(void) {
+  print_banner("Running all the registered tests");
+  UNITY_BEGIN();
+  unity_run_all_tests();
+  UNITY_END();
+}
+
+static void print_banner(const char* text) {
+  printf("\n#### %s #####\n\n", text);
+}

test/pytest_unittest.py

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+import pytest
+from pytest_embedded import Dut
+
+def test_unit_test(dut: Dut) -> None:
+    dut.expect("0 Failures")
+    dut.expect("Returned from app_main")

test/sdkconfig.defaults

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+# disable watchdog
+CONFIG_ESP_TASK_WDT_EN=n