Add a unit test app + example tests

.env

@@ -1,4 +1,5 @@
 repo_dir=$(cd "$(dirname "$_")" && pwd)
+export PROJ_PATH=$repo_dir
 export ADF_PATH=$repo_dir/lib/esp-adf
 export IDF_PATH=$ADF_PATH/esp-idf
 . $IDF_PATH/export.sh

.gitignore

@@ -5,3 +5,8 @@ build.clang/
 sdkconfig.old
 .vscode
 compile_commands.json
+warnings.txt
+
+test/build/
+test/dependencies.lock
+test/sdkconfig

CMakeLists.txt

@@ -1,34 +1,4 @@
-# For more information about build system see
-# https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html
-cmake_minimum_required(VERSION 3.8)
-set(CMAKE_CXX_STANDARD 17)
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
+cmake_minimum_required(VERSION 3.16)
+include(common.cmake)
 
-# ESP-ADF clobbers EXTRA_COMPONENT_DIRS, so include it first.
-include($ENV{ADF_PATH}/CMakeLists.txt)
-
-# Build only the subset of components that we actually depend on.
-set(COMPONENTS "")
-
-# External dependencies
-list(APPEND EXTRA_COMPONENT_DIRS "lib/result")
-list(APPEND EXTRA_COMPONENT_DIRS "lib/lvgl")
-
-# Project components
-list(APPEND EXTRA_COMPONENT_DIRS "src")
-
-# Additional warnings used when compiling our components.
-# Unable to be used due to issues in ESP-IDF includes are: -Wpedantic
-# -Wuseless-cast -Wconversion -Wold-style-cast -Wsign-conversion -Wcast-align
-set(EXTRA_WARNINGS "-Wshadow" "-Wnon-virtual-dtor" "-Wunused"
-  "-Woverloaded-virtual" "-Wmisleading-indentation" "-Wduplicated-cond"
-  "-Wduplicated-branches" "-Wlogical-op" "-Wnull-dereference"
-  "-Wdouble-promotion" "-Wformat=2" "-Wimplicit-fallthrough")
-
-include($ENV{IDF_PATH}/tools/cmake/project.cmake)
 project(gay-ipod-fw)
-
-# Extra build flags that should apply to the entire build. This should mostly
-# just be used to setting flags that our external dependencies requires.
-# Otherwise, prefer adding per-component build flags to keep things neat.
-idf_build_set_property(COMPILE_OPTIONS "-DRESULT_DISABLE_EXCEPTIONS -DLV_CONF_INCLUDE_SIMPLE" APPEND)

common.cmake

@@ -0,0 +1,33 @@
+# For more information about build system see
+# https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+# ESP-ADF clobbers EXTRA_COMPONENT_DIRS, so include it first.
+include($ENV{ADF_PATH}/CMakeLists.txt)
+
+# Build only the subset of components that we actually depend on.
+set(COMPONENTS "")
+
+# External dependencies
+list(APPEND EXTRA_COMPONENT_DIRS "$ENV{PROJ_PATH}/lib/result")
+list(APPEND EXTRA_COMPONENT_DIRS "$ENV{PROJ_PATH}/lib/lvgl")
+
+# Project components
+list(APPEND EXTRA_COMPONENT_DIRS "$ENV{PROJ_PATH}/src")
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+
+# Additional warnings used when compiling our components.
+# Unable to be used due to issues in ESP-IDF includes are: -Wpedantic
+# -Wuseless-cast -Wconversion -Wold-style-cast -Wsign-conversion -Wcast-align
+set(EXTRA_WARNINGS "-Wshadow" "-Wnon-virtual-dtor" "-Wunused"
+  "-Woverloaded-virtual" "-Wmisleading-indentation" "-Wduplicated-cond"
+  "-Wduplicated-branches" "-Wlogical-op" "-Wnull-dereference"
+  "-Wdouble-promotion" "-Wformat=2" "-Wimplicit-fallthrough")
+
+# Extra build flags that should apply to the entire build. This should mostly
+# just be used to setting flags that our external dependencies requires.
+# Otherwise, prefer adding per-component build flags to keep things neat.
+idf_build_set_property(
+  COMPILE_OPTIONS "-DRESULT_DISABLE_EXCEPTIONS -DLV_CONF_INCLUDE_SIMPLE" APPEND)

src/drivers/test/CMakeLists.txt

@@ -0,0 +1 @@
+idf_component_register(SRC_DIRS "." INCLUDE_DIRS "." REQUIRES cmock drivers)

src/drivers/test/test_example.cpp

@@ -0,0 +1,9 @@
+#include "unity.h"
+
+TEST_CASE("Example test case", "[cooltag]") {
+    TEST_ASSERT_EQUAL(0, 0);
+}
+
+TEST_CASE("test that doesn't run", "[cooltag][ignore]") {
+    TEST_ASSERT_EQUAL(0, 1);
+}

test/CMakeLists.txt

@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.16)
+include(../common.cmake)
+
+# Treat warnings as errors for test purposes.
+list(APPEND EXTRA_WARNINGS "-Werror")
+
+# List all components that include tests here.
+set(TEST_COMPONENTS "drivers")
+
+project(device_tests)

test/main/CMakeLists.txt

@@ -0,0 +1 @@
+idf_component_register(SRCS "main.c" INCLUDE_DIRS ".")

test/main/main.c

@@ -0,0 +1,22 @@
+#include <stdio.h>
+#include <string.h>
+#include "unity.h"
+
+static void print_banner(const char* text);
+
+void app_main(void)
+{
+    print_banner("Running tests without [ignore] tag");
+    UNITY_BEGIN();
+    unity_run_tests_by_tag("[ignore]", true);
+    UNITY_END();
+
+    print_banner("Starting interactive test menu");
+    unity_run_menu();
+}
+
+static void print_banner(const char* text)
+{
+    printf("\n#### %s #####\n\n", text);
+}
+

test/sdkconfig.defaults

@@ -0,0 +1,2 @@
+CONFIG_ESP_TASK_WDT=n
+