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7546861a AS |
1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | /* | |
3 | * Test cases for API provided by cmdline.c | |
4 | */ | |
5 | ||
6 | #include <kunit/test.h> | |
7 | #include <linux/kernel.h> | |
8 | #include <linux/random.h> | |
9 | #include <linux/string.h> | |
10 | ||
11 | static const char *cmdline_test_strings[] = { | |
12 | "\"\"", "" , "=" , "\"-", "," , "-," , ",-" , "-" , | |
13 | "+," , "--", ",,", "''" , "\"\",", "\",\"", "-\"\"", "\"", | |
14 | }; | |
15 | ||
16 | static const int cmdline_test_values[] = { | |
17 | 1, 1, 1, 1, 2, 3, 2, 3, | |
18 | 1, 3, 2, 1, 1, 1, 3, 1, | |
19 | }; | |
20 | ||
21 | static void cmdline_do_one_test(struct kunit *test, const char *in, int rc, int offset) | |
22 | { | |
23 | const char *fmt = "Pattern: %s"; | |
24 | const char *out = in; | |
25 | int dummy; | |
26 | int ret; | |
27 | ||
28 | ret = get_option((char **)&out, &dummy); | |
29 | ||
30 | KUNIT_EXPECT_EQ_MSG(test, ret, rc, fmt, in); | |
31 | KUNIT_EXPECT_PTR_EQ_MSG(test, out, in + offset, fmt, in); | |
32 | } | |
33 | ||
34 | static void cmdline_test_noint(struct kunit *test) | |
35 | { | |
36 | unsigned int i = 0; | |
37 | ||
38 | do { | |
39 | const char *str = cmdline_test_strings[i]; | |
40 | int rc = 0; | |
41 | int offset; | |
42 | ||
43 | /* Only first and leading '-' will advance the pointer */ | |
44 | offset = !!(*str == '-'); | |
45 | cmdline_do_one_test(test, str, rc, offset); | |
46 | } while (++i < ARRAY_SIZE(cmdline_test_strings)); | |
47 | } | |
48 | ||
49 | static void cmdline_test_lead_int(struct kunit *test) | |
50 | { | |
51 | unsigned int i = 0; | |
52 | char in[32]; | |
53 | ||
54 | do { | |
55 | const char *str = cmdline_test_strings[i]; | |
56 | int rc = cmdline_test_values[i]; | |
57 | int offset; | |
58 | ||
59 | sprintf(in, "%u%s", get_random_int() % 256, str); | |
60 | /* Only first '-' after the number will advance the pointer */ | |
61 | offset = strlen(in) - strlen(str) + !!(rc == 2); | |
62 | cmdline_do_one_test(test, in, rc, offset); | |
63 | } while (++i < ARRAY_SIZE(cmdline_test_strings)); | |
64 | } | |
65 | ||
66 | static void cmdline_test_tail_int(struct kunit *test) | |
67 | { | |
68 | unsigned int i = 0; | |
69 | char in[32]; | |
70 | ||
71 | do { | |
72 | const char *str = cmdline_test_strings[i]; | |
73 | /* When "" or "-" the result will be valid integer */ | |
74 | int rc = strcmp(str, "") ? (strcmp(str, "-") ? 0 : 1) : 1; | |
75 | int offset; | |
76 | ||
77 | sprintf(in, "%s%u", str, get_random_int() % 256); | |
78 | /* | |
79 | * Only first and leading '-' not followed by integer | |
80 | * will advance the pointer. | |
81 | */ | |
82 | offset = rc ? strlen(in) : !!(*str == '-'); | |
83 | cmdline_do_one_test(test, in, rc, offset); | |
84 | } while (++i < ARRAY_SIZE(cmdline_test_strings)); | |
85 | } | |
86 | ||
87 | static struct kunit_case cmdline_test_cases[] = { | |
88 | KUNIT_CASE(cmdline_test_noint), | |
89 | KUNIT_CASE(cmdline_test_lead_int), | |
90 | KUNIT_CASE(cmdline_test_tail_int), | |
91 | {} | |
92 | }; | |
93 | ||
94 | static struct kunit_suite cmdline_test_suite = { | |
95 | .name = "cmdline", | |
96 | .test_cases = cmdline_test_cases, | |
97 | }; | |
98 | kunit_test_suite(cmdline_test_suite); | |
99 | ||
100 | MODULE_LICENSE("GPL"); |