The get_max_cpu_from_list() function is used when parsing osnoise cpus
"all" value. Furthermore, the callback used by it is also used in
get_possible_cpus().

Add unit test to cover it.

Signed-off-by: Tomas Glozar <[email protected]>
---
 tools/tracing/rtla/tests/unit/utils.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tools/tracing/rtla/tests/unit/utils.c 
b/tools/tracing/rtla/tests/unit/utils.c
index 0cb5e217c56eb..cdd84ff895f86 100644
--- a/tools/tracing/rtla/tests/unit/utils.c
+++ b/tools/tracing/rtla/tests/unit/utils.c
@@ -95,6 +95,14 @@ START_TEST(test_cpu_list_iterate)
 }
 END_TEST
 
+START_TEST(test_get_max_cpu_from_list)
+{
+       ck_assert_int_eq(get_max_cpu_from_list("1,2,3,4-60"), 60);
+       ck_assert_int_eq(get_max_cpu_from_list("2,1-7,4"), 7);
+       ck_assert_int_eq(get_max_cpu_from_list("invalid"), -1);
+}
+END_TEST
+
 START_TEST(test_parse_cpu_set)
 {
        cpu_set_t set;
@@ -160,6 +168,7 @@ Suite *utils_suite(void)
 
        tcase_add_test(tc, test_strtoi);
        tcase_add_test(tc, test_cpu_list_iterate);
+       tcase_add_test(tc, test_get_max_cpu_from_list);
        tcase_add_test(tc, test_parse_cpu_set);
        tcase_add_test(tc, test_parse_prio);
 
-- 
2.55.0


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