1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * DAMON Debugfs Interface Unit Tests 4 * 5 * Author: SeongJae Park <sjpark@amazon.de> 6 */ 7 8 #ifdef CONFIG_DAMON_DBGFS_KUNIT_TEST 9 10 #ifndef _DAMON_DBGFS_TEST_H 11 #define _DAMON_DBGFS_TEST_H 12 13 #include <kunit/test.h> 14 15 static void damon_dbgfs_test_str_to_target_ids(struct kunit *test) 16 { 17 char *question; 18 unsigned long *answers; 19 unsigned long expected[] = {12, 35, 46}; 20 ssize_t nr_integers = 0, i; 21 22 question = "123"; 23 answers = str_to_target_ids(question, strnlen(question, 128), 24 &nr_integers); 25 KUNIT_EXPECT_EQ(test, (ssize_t)1, nr_integers); 26 KUNIT_EXPECT_EQ(test, 123ul, answers[0]); 27 kfree(answers); 28 29 question = "123abc"; 30 answers = str_to_target_ids(question, strnlen(question, 128), 31 &nr_integers); 32 KUNIT_EXPECT_EQ(test, (ssize_t)1, nr_integers); 33 KUNIT_EXPECT_EQ(test, 123ul, answers[0]); 34 kfree(answers); 35 36 question = "a123"; 37 answers = str_to_target_ids(question, strnlen(question, 128), 38 &nr_integers); 39 KUNIT_EXPECT_EQ(test, (ssize_t)0, nr_integers); 40 kfree(answers); 41 42 question = "12 35"; 43 answers = str_to_target_ids(question, strnlen(question, 128), 44 &nr_integers); 45 KUNIT_EXPECT_EQ(test, (ssize_t)2, nr_integers); 46 for (i = 0; i < nr_integers; i++) 47 KUNIT_EXPECT_EQ(test, expected[i], answers[i]); 48 kfree(answers); 49 50 question = "12 35 46"; 51 answers = str_to_target_ids(question, strnlen(question, 128), 52 &nr_integers); 53 KUNIT_EXPECT_EQ(test, (ssize_t)3, nr_integers); 54 for (i = 0; i < nr_integers; i++) 55 KUNIT_EXPECT_EQ(test, expected[i], answers[i]); 56 kfree(answers); 57 58 question = "12 35 abc 46"; 59 answers = str_to_target_ids(question, strnlen(question, 128), 60 &nr_integers); 61 KUNIT_EXPECT_EQ(test, (ssize_t)2, nr_integers); 62 for (i = 0; i < 2; i++) 63 KUNIT_EXPECT_EQ(test, expected[i], answers[i]); 64 kfree(answers); 65 66 question = ""; 67 answers = str_to_target_ids(question, strnlen(question, 128), 68 &nr_integers); 69 KUNIT_EXPECT_EQ(test, (ssize_t)0, nr_integers); 70 kfree(answers); 71 72 question = "\n"; 73 answers = str_to_target_ids(question, strnlen(question, 128), 74 &nr_integers); 75 KUNIT_EXPECT_EQ(test, (ssize_t)0, nr_integers); 76 kfree(answers); 77 } 78 79 static void damon_dbgfs_test_set_targets(struct kunit *test) 80 { 81 struct damon_ctx *ctx = dbgfs_new_ctx(); 82 unsigned long ids[] = {1, 2, 3}; 83 char buf[64]; 84 85 /* Make DAMON consider target id as plain number */ 86 ctx->primitive.target_valid = NULL; 87 ctx->primitive.cleanup = NULL; 88 89 damon_set_targets(ctx, ids, 3); 90 sprint_target_ids(ctx, buf, 64); 91 KUNIT_EXPECT_STREQ(test, (char *)buf, "1 2 3\n"); 92 93 damon_set_targets(ctx, NULL, 0); 94 sprint_target_ids(ctx, buf, 64); 95 KUNIT_EXPECT_STREQ(test, (char *)buf, "\n"); 96 97 damon_set_targets(ctx, (unsigned long []){1, 2}, 2); 98 sprint_target_ids(ctx, buf, 64); 99 KUNIT_EXPECT_STREQ(test, (char *)buf, "1 2\n"); 100 101 damon_set_targets(ctx, (unsigned long []){2}, 1); 102 sprint_target_ids(ctx, buf, 64); 103 KUNIT_EXPECT_STREQ(test, (char *)buf, "2\n"); 104 105 damon_set_targets(ctx, NULL, 0); 106 sprint_target_ids(ctx, buf, 64); 107 KUNIT_EXPECT_STREQ(test, (char *)buf, "\n"); 108 109 dbgfs_destroy_ctx(ctx); 110 } 111 112 static struct kunit_case damon_test_cases[] = { 113 KUNIT_CASE(damon_dbgfs_test_str_to_target_ids), 114 KUNIT_CASE(damon_dbgfs_test_set_targets), 115 {}, 116 }; 117 118 static struct kunit_suite damon_test_suite = { 119 .name = "damon-dbgfs", 120 .test_cases = damon_test_cases, 121 }; 122 kunit_test_suite(damon_test_suite); 123 124 #endif /* _DAMON_TEST_H */ 125 126 #endif /* CONFIG_DAMON_KUNIT_TEST */ 127