tests: unit: move the timeutil test to new ztest API

Migrate the testsuite tests/unit/timeutil to the new ztest API.

Signed-off-by: Enjia Mai <enjia.mai@intel.com>

tests/unit/timeutil/main.c

@@ -52,14 +52,4 @@ void timeutil_check(const struct timeutil_test_data *tp,
 	}
 }
 
-/*test case main entry*/
-void test_main(void)
-{
-	ztest_test_suite(test_timeutil_api,
-			 ztest_unit_test(test_gmtime),
-			 ztest_unit_test(test_s32),
-			 ztest_unit_test(test_s64),
-			 ztest_unit_test(test_sync)
-			 );
-	ztest_run_test_suite(test_timeutil_api);
-}
+ZTEST_SUITE(timeutil_api, NULL, NULL, NULL, NULL, NULL);

tests/unit/timeutil/prj.conf

@@ -0,0 +1 @@
+CONFIG_ZTEST_NEW_API=y

tests/unit/timeutil/test_gmtime.c

@@ -10,7 +10,7 @@
 #include <zephyr/ztest.h>
 #include "timeutil_test.h"
 
-void test_gmtime(void)
+ZTEST(timeutil_api, test_gmtime)
 {
 	struct tm tm = {
 		/* Initialize an unset field */

tests/unit/timeutil/test_s32.c

@@ -238,7 +238,7 @@ static const struct timeutil_test_data tests[] = {
 	  } },
 };
 
-void test_s32(void)
+ZTEST(timeutil_api, test_s32)
 {
 	timeutil_check(tests, sizeof(tests) / sizeof(*tests));
 }

tests/unit/timeutil/test_s64.c

@@ -323,7 +323,7 @@ static void test_time32_overflow(void)
 		      "final errno state bad");
 }
 
-void test_s64(void)
+ZTEST(timeutil_api, test_s64)
 {
 	if (sizeof(time_t) < 8U) {
 		test_time32_errno_clear();

tests/unit/timeutil/test_sync.c

@@ -426,7 +426,7 @@ static void test_skew_to_ppb(void)
 		      "unexpected above limit: %.10g %d", skew, ppb);
 }
 
-void test_sync(void)
+ZTEST(timeutil_api, test_sync)
 {
 	test_state_update();
 	test_state_set_skew();