chore: import upstream snapshot with attribution

components/unity/include/unity_fixture_extras.h

@@ -0,0 +1,70 @@
+/*
+ * SPDX-FileCopyrightText: 2016-2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/* IDF-specific additions to "Unity Fixture".
+ * This file doesn't need to be included directly, it gets included into unity.h
+ * through unity_config.h.
+ */
+
+#pragma once
+
+#include "sdkconfig.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if !defined(CONFIG_IDF_TARGET) || defined(CONFIG_IDF_TARGET_LINUX)
+#define UNITY_MAYBE_EXIT(rc)  do { exit(rc); } while(0)
+#else
+#define UNITY_MAYBE_EXIT(rc)  do { (void) rc; } while(0)
+#endif
+
+/* A shorthand for running all tests called from one function "func_", from the app_main function.
+ * Use this when there is more than one test group.
+ *
+ * Example:
+ *
+ *    #include "unity.h"
+ *    #include "unity_fixture.h"
+ *
+ *    static_void run_all_tests(void) {
+ *        RUN_TEST_GROUP(group1);   // test group defined in another file, e.g. test_group1.c
+ *        RUN_TEST_GROUP(group2);   // test group defined in another file, e.g. test_group2.c
+ *    }
+ *
+ *    void app_main(void) {
+ *        UNITY_MAIN_FUNC(run_all_tests);
+ *    }
+ */
+#define UNITY_MAIN_FUNC(func_) do { \
+    const char* argv[] = { "test", "-v" }; \
+    const int argc = sizeof(argv)/sizeof(argv[0]); \
+    int rc = UnityMain(argc, argv, func_); \
+    printf("\nTests finished, rc=%d\n", rc); \
+    UNITY_MAYBE_EXIT(rc); \
+} while(0)
+
+/* A shorthand for running one test group from the app_main function, when there is only
+ * one test group and it is defined in the same file.
+ *
+ * Example:
+ *
+ *    #include "unity.h"
+ *    #include "unity_fixture.h"
+ *
+ *    TEST_GROUP(my_feature);
+ *    // also define TEST_SETUP, TEST_TEARDOWN, TESTs, TEST_GROUP_RUNNER
+ *
+ *    void app_main(void) {
+ *        UNITY_MAIN(my_feature);
+ *    }
+ */
+#define UNITY_MAIN(group_) UNITY_MAIN_FUNC(TEST_ ## group_ ## _GROUP_RUNNER)
+
+#ifdef __cplusplus
+}
+#endif