[PATCH 12/15] perf test: Split monolithic 'util' test suite into sub-tests

[Ian Rogers <irogers@google.com>]

Refactor the monolithic 'util' test suite into distinct 'String
replacement' and 'BLAKE2s hash' sub-tests using the struct test_case
framework. This improves test reporting granularity and is used in a
subsequent perf test for JUnit XML test result reporting.

Assisted-by: Gemini-CLI:Google Gemini 3
Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/tests/util.c | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/tools/perf/tests/util.c b/tools/perf/tests/util.c
index bf2c5b133884..f9abd9911e6c 100644
--- a/tools/perf/tests/util.c
+++ b/tools/perf/tests/util.c
@@ -86,7 +86,12 @@ static int test_blake2s(void)
 	return 0;
 }
 
-static int test__util(struct test_suite *t __maybe_unused, int subtest __maybe_unused)
+static int test__blake2s_case(struct test_suite *t __maybe_unused, int subtest __maybe_unused)
+{
+	return test_blake2s();
+}
+
+static int test__strreplace(struct test_suite *t __maybe_unused, int subtest __maybe_unused)
 {
 	TEST_ASSERT_VAL("empty string", test_strreplace(' ', "", "123", ""));
 	TEST_ASSERT_VAL("no match", test_strreplace('5', "123", "4", "123"));
@@ -95,7 +100,16 @@ static int test__util(struct test_suite *t __maybe_unused, int subtest __maybe_u
 	TEST_ASSERT_VAL("replace long", test_strreplace('a', "abcabc", "longlong",
 							"longlongbclonglongbc"));
 
-	return test_blake2s();
+	return 0;
 }
 
-DEFINE_SUITE("util", util);
+static struct test_case tests__util[] = {
+	TEST_CASE("String replacement", strreplace),
+	TEST_CASE("BLAKE2s hash", blake2s_case),
+	{ .name = NULL, }
+};
+
+struct test_suite suite__util = {
+	.desc = "util",
+	.test_cases = tests__util,
+};
-- 
2.54.0.823.g6e5bcc1fc9-goog