LCOV - GNU Libidn - gltests/test-getcwd-lgpl.c

 Line data Source code

 1  : /* Test of getcwd() function.
 2  : Copyright (C) 2009-2020 Free Software Foundation, Inc.
 3  : 
 4  : This program is free software: you can redistribute it and/or modify
 5  : it under the terms of the GNU General Public License as published by
 6  : the Free Software Foundation; either version 3 of the License, or
 7  : (at your option) any later version.
 8  : 
 9  : This program is distributed in the hope that it will be useful,
 10  : but WITHOUT ANY WARRANTY; without even the implied warranty of
 11  : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 12  : GNU General Public License for more details.
 13  : 
 14  : You should have received a copy of the GNU General Public License
 15  : along with this program. If not, see <https://www.gnu.org/licenses/>. */
 16  : 
 17  : #include <config.h>
 18  : 
 19  : #include <unistd.h>
 20  : 
 21  : #include "signature.h"
 22  : SIGNATURE_CHECK (getcwd, char *, (char *, size_t));
 23  : 
 24  : #include <errno.h>
 25  : #include <stdio.h>
 26  : #include <stdlib.h>
 27  : #include <string.h>
 28  : 
 29  : #include "macros.h"
 30  : 
 31  : int
 32  1 : main (int argc, char **argv)
 33  : {
 34  : char *pwd1;
 35  : char *pwd2;
 36  : /* If the user provides an argument, attempt to chdir there first. */
 37  1 : if (1 < argc)
 38  : {
 39  0 : if (chdir (argv[1]) == 0)
 40  0 : printf ("changed to directory %s\n", argv[1]);
 41  : }
 42  : 
 43  1 : pwd1 = getcwd (NULL, 0);
 44  1 : ASSERT (pwd1 && *pwd1);
 45  1 : if (1 < argc)
 46  0 : printf ("cwd=%s\n", pwd1);
 47  : 
 48  : /* Make sure the result is usable. */
 49  1 : ASSERT (chdir (pwd1) == 0);
 50  1 : ASSERT (chdir (".//./.") == 0);
 51  : 
 52  : /* Make sure that result is normalized. */
 53  1 : pwd2 = getcwd (NULL, 0);
 54  1 : ASSERT (pwd2);
 55  1 : ASSERT (strcmp (pwd1, pwd2) == 0);
 56  1 : free (pwd2);
 57  : {
 58  1 : size_t len = strlen (pwd1);
 59  1 : ssize_t i = len - 10;
 60  1 : if (i < 1)
 61  0 : i = 1;
 62  1 : pwd2 = getcwd (NULL, len + 1);
 63  1 : ASSERT (pwd2);
 64  1 : free (pwd2);
 65  1 : pwd2 = malloc (len + 2);
 66  12 : for ( ; i <= len; i++)
 67  : {
 68  : char *tmp;
 69  11 : errno = 0;
 70  11 : ASSERT (getcwd (pwd2, i) == NULL);
 71  11 : ASSERT (errno == ERANGE);
 72  : /* Allow either glibc or BSD behavior, since POSIX allows both. */
 73  11 : errno = 0;
 74  11 : tmp = getcwd (NULL, i);
 75  11 : if (tmp)
 76  : {
 77  0 : ASSERT (strcmp (pwd1, tmp) == 0);
 78  0 : free (tmp);
 79  : }
 80  : else
 81  : {
 82  11 : ASSERT (errno == ERANGE);
 83  : }
 84  : }
 85  1 : ASSERT (getcwd (pwd2, len + 1) == pwd2);
 86  1 : pwd2[len] = '/';
 87  1 : pwd2[len + 1] = '0円';
 88  : }
 89  1 : ASSERT (strstr (pwd2, "/./") == NULL);
 90  1 : ASSERT (strstr (pwd2, "/../") == NULL);
 91  1 : ASSERT (strstr (pwd2 + 1 + (pwd2[1] == '/'), "//") == NULL);
 92  : 
 93  : /* Validate a POSIX requirement on size. */
 94  1 : errno = 0;
 95  1 : ASSERT (getcwd(pwd2, 0) == NULL);
 96  1 : ASSERT (errno == EINVAL);
 97  : 
 98  1 : free (pwd1);
 99  1 : free (pwd2);
 100  : 
 101  1 : return 0;
 102  : }