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/* SPDX-License-Identifier: GPL-2.0 */
/*
* DAMON Debugfs Interface Unit Tests
*
* Author: SeongJae Park <sj@kernel.org>
*/
#ifdef CONFIG_DAMON_DBGFS_KUNIT_TEST
#ifndef _DAMON_DBGFS_TEST_H
#define _DAMON_DBGFS_TEST_H
#include <kunit/test.h>
static void damon_dbgfs_test_str_to_ints(struct kunit *test)
{
char *question;
int *answers;
int expected[] = {12, 35, 46};
ssize_t nr_integers = 0, i;
question = "123";
answers = str_to_ints(question, strlen(question), &nr_integers);
KUNIT_EXPECT_EQ(test, (ssize_t)1, nr_integers);
KUNIT_EXPECT_EQ(test, 123, answers[0]);
kfree(answers);
question = "123abc";
answers = str_to_ints(question, strlen(question), &nr_integers);
KUNIT_EXPECT_EQ(test, (ssize_t)1, nr_integers);
KUNIT_EXPECT_EQ(test, 123, answers[0]);
kfree(answers);
question = "a123";
answers = str_to_ints(question, strlen(question), &nr_integers);
KUNIT_EXPECT_EQ(test, (ssize_t)0, nr_integers);
kfree(answers);
question = "12 35";
answers = str_to_ints(question, strlen(question), &nr_integers);
KUNIT_EXPECT_EQ(test, (ssize_t)2, nr_integers);
for (i = 0; i < nr_integers; i++)
KUNIT_EXPECT_EQ(test, expected[i], answers[i]);
kfree(answers);
question = "12 35 46";
answers = str_to_ints(question, strlen(question), &nr_integers);
KUNIT_EXPECT_EQ(test, (ssize_t)3, nr_integers);
for (i = 0; i < nr_integers; i++)
KUNIT_EXPECT_EQ(test, expected[i], answers[i]);
kfree(answers);
question = "12 35 abc 46";
answers = str_to_ints(question, strlen(question), &nr_integers);
KUNIT_EXPECT_EQ(test, (ssize_t)2, nr_integers);
for (i = 0; i < 2; i++)
KUNIT_EXPECT_EQ(test, expected[i], answers[i]);
kfree(answers);
question = "";
answers = str_to_ints(question, strlen(question), &nr_integers);
KUNIT_EXPECT_EQ(test, (ssize_t)0, nr_integers);
kfree(answers);
question = "\n";
answers = str_to_ints(question, strlen(question), &nr_integers);
KUNIT_EXPECT_EQ(test, (ssize_t)0, nr_integers);
kfree(answers);
}
static void damon_dbgfs_test_set_targets(struct kunit *test)
{
struct damon_ctx *ctx = dbgfs_new_ctx();
char buf[64];
/* Make DAMON consider target has no pid */
damon_select_ops(ctx, DAMON_OPS_PADDR);
dbgfs_set_targets(ctx, 0, NULL);
sprint_target_ids(ctx, buf, 64);
KUNIT_EXPECT_STREQ(test, (char *)buf, "\n");
dbgfs_set_targets(ctx, 1, NULL);
sprint_target_ids(ctx, buf, 64);
KUNIT_EXPECT_STREQ(test, (char *)buf, "42\n");
dbgfs_set_targets(ctx, 0, NULL);
sprint_target_ids(ctx, buf, 64);
KUNIT_EXPECT_STREQ(test, (char *)buf, "\n");
dbgfs_destroy_ctx(ctx);
}
static void damon_dbgfs_test_set_init_regions(struct kunit *test)
{
struct damon_ctx *ctx = damon_new_ctx();
/* Each line represents one region in ``<target idx> <start> <end>`` */
char * const valid_inputs[] = {"1 10 20\n 1 20 30\n1 35 45",
"1 10 20\n",
"1 10 20\n0 39 59\n0 70 134\n 1 20 25\n",
""};
/* Reading the file again will show sorted, clean output */
char * const valid_expects[] = {"1 10 20\n1 20 30\n1 35 45\n",
"1 10 20\n",
"0 39 59\n0 70 134\n1 10 20\n1 20 25\n",
""};
char * const invalid_inputs[] = {"3 10 20\n", /* target not exists */
"1 10 20\n 1 14 26\n", /* regions overlap */
"0 10 20\n1 30 40\n 0 5 8"}; /* not sorted by address */
char *input, *expect;
int i, rc;
char buf[256];
damon_select_ops(ctx, DAMON_OPS_PADDR);
dbgfs_set_targets(ctx, 3, NULL);
/* Put valid inputs and check the results */
for (i = 0; i < ARRAY_SIZE(valid_inputs); i++) {
input = valid_inputs[i];
expect = valid_expects[i];
rc = set_init_regions(ctx, input, strnlen(input, 256));
KUNIT_EXPECT_EQ(test, rc, 0);
memset(buf, 0, 256);
sprint_init_regions(ctx, buf, 256);
KUNIT_EXPECT_STREQ(test, (char *)buf, expect);
}
/* Put invalid inputs and check the return error code */
for (i = 0; i < ARRAY_SIZE(invalid_inputs); i++) {
input = invalid_inputs[i];
pr_info("input: %s\n", input);
rc = set_init_regions(ctx, input, strnlen(input, 256));
KUNIT_EXPECT_EQ(test, rc, -EINVAL);
memset(buf, 0, 256);
sprint_init_regions(ctx, buf, 256);
KUNIT_EXPECT_STREQ(test, (char *)buf, "");
}
dbgfs_set_targets(ctx, 0, NULL);
damon_destroy_ctx(ctx);
}
static struct kunit_case damon_test_cases[] = {
KUNIT_CASE(damon_dbgfs_test_str_to_ints),
KUNIT_CASE(damon_dbgfs_test_set_targets),
KUNIT_CASE(damon_dbgfs_test_set_init_regions),
{},
};
static struct kunit_suite damon_test_suite = {
.name = "damon-dbgfs",
.test_cases = damon_test_cases,
};
kunit_test_suite(damon_test_suite);
#endif /* _DAMON_TEST_H */
#endif /* CONFIG_DAMON_KUNIT_TEST */
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