1 | /* Basic test for the TEST_COMPARE_STRING macro. |
2 | Copyright (C) 2018-2022 Free Software Foundation, Inc. |
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 |
17 | <https://www.gnu.org/licenses/>. */ |
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_STRING ("" , NULL); /* Line 29. */ |
30 | TEST_COMPARE_STRING ("X" , "" ); /* Line 30. */ |
31 | TEST_COMPARE_STRING (NULL, "X" ); /* Line 31. */ |
32 | TEST_COMPARE_STRING ("abcd" , "abcD" ); /* Line 32. */ |
33 | TEST_COMPARE_STRING ("abcd" , NULL); /* Line 33. */ |
34 | TEST_COMPARE_STRING (NULL, "abcd" ); /* 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_STRING (NULL, NULL); |
47 | TEST_COMPARE_STRING ("" , "" ); |
48 | TEST_COMPARE_STRING (buffer_abc_1, buffer_abc_2); |
49 | TEST_COMPARE_STRING (buffer_abc_1, "abc" ); |
50 | |
51 | struct support_capture_subprocess proc = support_capture_subprocess |
52 | (callback: &subprocess, NULL); |
53 | |
54 | /* Discard the reported error. */ |
55 | support_record_failure_reset (); |
56 | |
57 | puts (s: "info: *** subprocess output starts ***" ); |
58 | fputs (s: proc.out.buffer, stdout); |
59 | puts (s: "info: *** subprocess output ends ***" ); |
60 | |
61 | TEST_VERIFY |
62 | (strcmp (proc.out.buffer, |
63 | "tst-test_compare_string.c:29: error: string comparison failed\n" |
64 | " left string: 0 bytes\n" |
65 | " right string: NULL\n" |
66 | "tst-test_compare_string.c:30: error: string comparison failed\n" |
67 | " left string: 1 bytes\n" |
68 | " right string: 0 bytes\n" |
69 | " left (evaluated from \"X\"):\n" |
70 | " \"X\"\n" |
71 | " 58\n" |
72 | "tst-test_compare_string.c:31: error: string comparison failed\n" |
73 | " left string: NULL\n" |
74 | " right string: 1 bytes\n" |
75 | " right (evaluated from \"X\"):\n" |
76 | " \"X\"\n" |
77 | " 58\n" |
78 | "tst-test_compare_string.c:32: error: string comparison failed\n" |
79 | " string length: 4 bytes\n" |
80 | " left (evaluated from \"abcd\"):\n" |
81 | " \"abcd\"\n" |
82 | " 61 62 63 64\n" |
83 | " right (evaluated from \"abcD\"):\n" |
84 | " \"abcD\"\n" |
85 | " 61 62 63 44\n" |
86 | "tst-test_compare_string.c:33: error: string comparison failed\n" |
87 | " left string: 4 bytes\n" |
88 | " right string: NULL\n" |
89 | " left (evaluated from \"abcd\"):\n" |
90 | " \"abcd\"\n" |
91 | " 61 62 63 64\n" |
92 | "tst-test_compare_string.c:34: error: string comparison failed\n" |
93 | " left string: NULL\n" |
94 | " right string: 4 bytes\n" |
95 | " right (evaluated from \"abcd\"):\n" |
96 | " \"abcd\"\n" |
97 | " 61 62 63 64\n" |
98 | ) == 0); |
99 | |
100 | /* Check that there is no output on standard error. */ |
101 | support_capture_subprocess_check (&proc, context: "TEST_COMPARE_STRING" , |
102 | status_or_signal: 0, allowed: sc_allow_stdout); |
103 | |
104 | return 0; |
105 | } |
106 | |
107 | #include <support/test-driver.c> |
108 | |