emtest.h

#ifndef EMTEST_H_
#define EMTEST_H_

typedef int (*test_routine_t)(void);

struct test_case_desc {
	test_routine_t routine;
	char desc[];
};

struct test_suite_desc {
	const struct test_case_desc *volatile const *test_cases;
	char desc[];
};

#include <util/array_spread.h>
#include <util/macro.h>

ARRAY_SPREAD_DECLARE(struct test_suite_desc *, all_tests);

#define TEST_SUITE(_desc) \
	ARRAY_SPREAD_TERM_DEF(static const struct test_case_desc *, \
			__TEST_CASES_ARRAY, NULL /* */);                         \
	static struct test_suite_desc test_suite = {                  \
					.test_cases = __TEST_CASES_ARRAY,                \
					.desc = ""_desc,                             \
			};                                                   \
	ARRAY_SPREAD_ADD(all_tests, &test_suite)

#define TEST_CASE(desc) \
	__TEST_CASE_NM("" desc, MACRO_GUARD(__test_case_struct), \
					MACRO_GUARD(__test_case))

#define __TEST_CASE_NM(_desc, test_struct, test_func)  \
	static int test_func(void);                        \
	static struct test_case_desc test_struct = {       \
			.routine = test_func,                      \
			.desc = _desc,                             \
	};                                                 \
	ARRAY_SPREAD_ADD(__TEST_CASES_ARRAY, &test_struct); \
	static int test_func(void)

#endif /* EMTEST_H_ */