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