freertos: Add blank freertos test app

This commit adds a blank FreeRTOS test app in preparation for migrating of
FreeRTOS unit tests to the created test app.

components/freertos/test/CMakeLists.txt

@@ -1,15 +0,0 @@
-# For refactored FreeRTOS unit tests, we need to support #include "xxx.h" of FreeRTOS headers
-idf_component_get_property(FREERTOS_ORIG_INCLUDE_PATH freertos ORIG_INCLUDE_PATH)
-
-idf_component_register(SRC_DIRS integration     # For freertos_test_utils.c
-                                integration/event_groups
-                                integration/queue
-                                integration/stream_buffer
-                                integration/tasks
-                                integration/timers
-                                miscellaneous
-                                performance
-                                port
-                       PRIV_INCLUDE_DIRS . ./integration "${FREERTOS_ORIG_INCLUDE_PATH}"
-                       PRIV_REQUIRES cmock test_utils esp_system driver esp_timer)
-target_compile_options(${COMPONENT_LIB} PRIVATE "-Wno-format")

components/freertos/test_apps/freertos/CMakeLists.txt

@@ -0,0 +1,16 @@
+# This is the project CMakeLists.txt file for the test subproject
+cmake_minimum_required(VERSION 3.16)
+
+# FreeRTOS tests of different types (e.g., kernel, port, performance etc.)are
+# split into different directores in the test app's root directory. Each test
+# type is treated as separate component
+set(test_types)
+
+list(APPEND EXTRA_COMPONENT_DIRS
+     ${test_types}) # Add each test type as a component
+
+# "Trim" the build. Include the minimal set of components, main, and anything it depends on.
+set(COMPONENTS main)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(freertos_test)

components/freertos/test_apps/freertos/README.md

@@ -0,0 +1,2 @@
+| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-S2 | ESP32-S3 |
+| ----------------- | ----- | -------- | -------- | -------- | -------- |

components/freertos/test_apps/freertos/main/CMakeLists.txt

@@ -0,0 +1,2 @@
+idf_component_register(SRCS "test_freertos_main.c"
+                       PRIV_REQUIRES unity test_utils driver)

components/freertos/test_apps/freertos/main/test_freertos_main.c

@@ -0,0 +1,40 @@
+/*
+ * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "unity.h"
+#include "unity_test_runner.h"
+#include "esp_heap_caps.h"
+
+#define TEST_MEMORY_LEAK_THRESHOLD (-256)
+
+static size_t before_free_8bit;
+static size_t before_free_32bit;
+
+static void check_leak(size_t before_free, size_t after_free, const char *type)
+{
+    ssize_t delta = after_free - before_free;
+    printf("MALLOC_CAP_%s: Before %u bytes free, After %u bytes free (delta %d)\n", type, before_free, after_free, delta);
+    TEST_ASSERT_MESSAGE(delta >= TEST_MEMORY_LEAK_THRESHOLD, "memory leak");
+}
+
+void setUp(void)
+{
+    before_free_8bit = heap_caps_get_free_size(MALLOC_CAP_8BIT);
+    before_free_32bit = heap_caps_get_free_size(MALLOC_CAP_32BIT);
+}
+
+void tearDown(void)
+{
+    size_t after_free_8bit = heap_caps_get_free_size(MALLOC_CAP_8BIT);
+    size_t after_free_32bit = heap_caps_get_free_size(MALLOC_CAP_32BIT);
+    check_leak(before_free_8bit, after_free_8bit, "8BIT");
+    check_leak(before_free_32bit, after_free_32bit, "32BIT");
+}
+
+void app_main(void)
+{
+    unity_run_menu();
+}

components/freertos/test_apps/freertos/pytest_freertos.py

@@ -0,0 +1,13 @@
+# SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+# SPDX-License-Identifier: Apache-2.0
+
+import pytest
+from pytest_embedded import Dut
+
+
+@pytest.mark.supported_targets
+@pytest.mark.generic
+def test_freertos(dut: Dut) -> None:
+    dut.expect_exact('Press ENTER to see the list of tests')
+    dut.write('*')
+    dut.expect_unity_test_output()