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2afece36 | 1 | /* Basic test for the TEST_COMPARE_BLOB macro. |
581c785b | 2 | Copyright (C) 2018-2022 Free Software Foundation, Inc. |
2afece36 FW |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
2afece36 FW |
18 | |
19 | #include <string.h> | |
20 | #include <support/check.h> | |
21 | #include <support/capture_subprocess.h> | |
22 | ||
23 | static void | |
24 | subprocess (void *closure) | |
25 | { | |
26 | /* These tests should fail. They were chosen to cover differences | |
27 | in length (with the same contents), single-bit mismatches, and | |
28 | mismatching null pointers. */ | |
29 | TEST_COMPARE_BLOB ("", 0, "", 1); /* Line 29. */ | |
30 | TEST_COMPARE_BLOB ("X", 1, "", 1); /* Line 30. */ | |
31 | TEST_COMPARE_BLOB ("abcd", 3, "abcd", 4); /* Line 31. */ | |
32 | TEST_COMPARE_BLOB ("abcd", 4, "abcD", 4); /* Line 32. */ | |
33 | TEST_COMPARE_BLOB ("abcd", 4, NULL, 0); /* Line 33. */ | |
34 | TEST_COMPARE_BLOB (NULL, 0, "abcd", 4); /* Line 34. */ | |
35 | } | |
36 | ||
37 | /* Same contents, different addresses. */ | |
38 | char buffer_abc_1[] = "abc"; | |
39 | char buffer_abc_2[] = "abc"; | |
40 | ||
41 | static int | |
42 | do_test (void) | |
43 | { | |
44 | /* This should succeed. Even if the pointers and array contents are | |
45 | different, zero-length inputs are not different. */ | |
46 | TEST_COMPARE_BLOB ("", 0, "", 0); | |
47 | TEST_COMPARE_BLOB ("", 0, buffer_abc_1, 0); | |
48 | TEST_COMPARE_BLOB (buffer_abc_1, 0, "", 0); | |
49 | TEST_COMPARE_BLOB (NULL, 0, "", 0); | |
50 | TEST_COMPARE_BLOB ("", 0, NULL, 0); | |
51 | TEST_COMPARE_BLOB (NULL, 0, NULL, 0); | |
52 | ||
53 | /* Check equality of blobs containing a single NUL byte. */ | |
54 | TEST_COMPARE_BLOB ("", 1, "", 1); | |
55 | TEST_COMPARE_BLOB ("", 1, &buffer_abc_1[3], 1); | |
56 | ||
57 | /* Check equality of blobs of varying lengths. */ | |
58 | for (size_t i = 0; i <= sizeof (buffer_abc_1); ++i) | |
59 | TEST_COMPARE_BLOB (buffer_abc_1, i, buffer_abc_2, i); | |
60 | ||
61 | struct support_capture_subprocess proc = support_capture_subprocess | |
62 | (&subprocess, NULL); | |
63 | ||
64 | /* Discard the reported error. */ | |
65 | support_record_failure_reset (); | |
66 | ||
67 | puts ("info: *** subprocess output starts ***"); | |
68 | fputs (proc.out.buffer, stdout); | |
69 | puts ("info: *** subprocess output ends ***"); | |
70 | ||
71 | TEST_VERIFY | |
72 | (strcmp (proc.out.buffer, | |
73 | "tst-test_compare_blob.c:29: error: blob comparison failed\n" | |
74 | " left length: 0 bytes (from 0)\n" | |
75 | " right length: 1 bytes (from 1)\n" | |
76 | " right (evaluated from \"\"):\n" | |
77 | " \"\\000\"\n" | |
78 | " 00\n" | |
79 | "tst-test_compare_blob.c:30: error: blob comparison failed\n" | |
80 | " blob length: 1 bytes\n" | |
81 | " left (evaluated from \"X\"):\n" | |
82 | " \"X\"\n" | |
83 | " 58\n" | |
84 | " right (evaluated from \"\"):\n" | |
85 | " \"\\000\"\n" | |
86 | " 00\n" | |
87 | "tst-test_compare_blob.c:31: error: blob comparison failed\n" | |
88 | " left length: 3 bytes (from 3)\n" | |
89 | " right length: 4 bytes (from 4)\n" | |
90 | " left (evaluated from \"abcd\"):\n" | |
91 | " \"abc\"\n" | |
92 | " 61 62 63\n" | |
93 | " right (evaluated from \"abcd\"):\n" | |
94 | " \"abcd\"\n" | |
95 | " 61 62 63 64\n" | |
96 | "tst-test_compare_blob.c:32: error: blob comparison failed\n" | |
97 | " blob length: 4 bytes\n" | |
98 | " left (evaluated from \"abcd\"):\n" | |
99 | " \"abcd\"\n" | |
100 | " 61 62 63 64\n" | |
101 | " right (evaluated from \"abcD\"):\n" | |
102 | " \"abcD\"\n" | |
103 | " 61 62 63 44\n" | |
104 | "tst-test_compare_blob.c:33: error: blob comparison failed\n" | |
105 | " left length: 4 bytes (from 4)\n" | |
106 | " right length: 0 bytes (from 0)\n" | |
107 | " left (evaluated from \"abcd\"):\n" | |
108 | " \"abcd\"\n" | |
109 | " 61 62 63 64\n" | |
110 | "tst-test_compare_blob.c:34: error: blob comparison failed\n" | |
111 | " left length: 0 bytes (from 0)\n" | |
112 | " right length: 4 bytes (from 4)\n" | |
113 | " right (evaluated from \"abcd\"):\n" | |
114 | " \"abcd\"\n" | |
115 | " 61 62 63 64\n" | |
116 | ) == 0); | |
117 | ||
118 | /* Check that there is no output on standard error. */ | |
119 | support_capture_subprocess_check (&proc, "TEST_COMPARE_BLOB", | |
120 | 0, sc_allow_stdout); | |
121 | ||
122 | return 0; | |
123 | } | |
124 | ||
125 | #include <support/test-driver.c> |