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rtla/tests: Add unit test for cpu_list_iterate()

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cpu_list_iterate() was split out of parse_cpu_set() to hold shared code
between it and the newly added function get_possible_cpus().

As its semantics are more complex than parse_cpu_set() - it calls a
callback on each element of the list, with possible abort on failure,
while parse_cpu_set() cares only about the set defined by the list - it
deserves its own test.

Test the callback being called correctly as well as the return value and
early break on different combinations of comma-separated numbers and
ranges.

Link: https://lore.kernel.org/r/20260814135511.2207190-5-tglozar@redhat.com
Signed-off-by: Tomas Glozar <tglozar@redhat.com>
This commit is contained in:
Tomas Glozar 2026-08-14 15:55:10 +02:00
parent b105ffc19d
commit a506a3de56
1 changed files with 62 additions and 0 deletions
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62
tools/tracing/rtla/tests/unit/utils.c
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@ -34,6 +34,67 @@ START_TEST(test_strtoi)
}
END_TEST
struct cpu_list_iterate_cb_data {
int index;
int *values;
};
static int cpu_list_iterate_callback(int cpu, void *data)
{
struct cpu_list_iterate_cb_data *cb_data = data;
ck_assert_int_eq(cpu, cb_data->values[cb_data->index++]);
return 0;
}
static int cpu_list_iterate_callback_error(int cpu, void *data)
{
struct cpu_list_iterate_cb_data *cb_data = data;
if (cpu > 10)
return -42;
ck_assert_int_eq(cpu, cb_data->values[cb_data->index++]);
return 0;
}
START_TEST(test_cpu_list_iterate)
{
struct cpu_list_iterate_cb_data cb_data;
int test_data_1[] = {1, 2, 3, 4};
int test_data_2[] = {1, 2, 10, 11, 12};
cb_data.index = 0;
cb_data.values = test_data_1;
ck_assert_int_eq(cpu_list_iterate("1,2,3,4", cpu_list_iterate_callback, &cb_data), 4);
ck_assert_int_eq(cb_data.index, 4);
cb_data.index = 0;
ck_assert_int_eq(cpu_list_iterate("1-4", cpu_list_iterate_callback, &cb_data), 4);
ck_assert_int_eq(cb_data.index, 4);
cb_data.index = 0;
ck_assert_int_eq(cpu_list_iterate("1,2-3,4", cpu_list_iterate_callback, &cb_data), 4);
ck_assert_int_eq(cb_data.index, 4);
cb_data.index = 0;
ck_assert_int_eq(cpu_list_iterate("1-3,4", cpu_list_iterate_callback, &cb_data), 4);
ck_assert_int_eq(cb_data.index, 4);
cb_data.index = 0;
ck_assert_int_eq(cpu_list_iterate("1,2-4", cpu_list_iterate_callback, &cb_data), 4);
ck_assert_int_eq(cb_data.index, 4);
cb_data.index = 0;
ck_assert_int_eq(cpu_list_iterate("1,2-4", cpu_list_iterate_callback_error, &cb_data), 4);
ck_assert_int_eq(cb_data.index, 4);
cb_data.index = 0;
cb_data.values = test_data_2;
ck_assert_int_eq(cpu_list_iterate("1,2,10-12", cpu_list_iterate_callback_error, &cb_data),
-42);
ck_assert_int_eq(cb_data.index, 3);
}
END_TEST
START_TEST(test_parse_cpu_set)
{
cpu_set_t set;
@ -98,6 +159,7 @@ Suite *utils_suite(void)
TCase *tc = tcase_create("core");
tcase_add_test(tc, test_strtoi);
tcase_add_test(tc, test_cpu_list_iterate);
tcase_add_test(tc, test_parse_cpu_set);
tcase_add_test(tc, test_parse_prio);