tests/lib/libc/gen/t_basedirname.c

   1 /*      $NetBSD: t_basedirname.c,v 1.2 2011/07/07 09:49:59 jruoho Exp $ */
   2
   3 /*
   4  * Regression test for basename(3).
   5  *
   6  * Written by Jason R. Thorpe <thorpej@NetBSD.org>, Oct. 2002.
   7  * Public domain.
   8  */
   9
  10 #include <atf-c.h>
  11
  12 #include <assert.h>
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15 #include <string.h>
  16 #include <libgen.h>
  17
  18 struct {
  19         const char *input;
  20         const char *output;
  21 } test_basename_table[] = {
  22 /*
  23  * The following are taken from the "Sample Input and Output Strings
  24  * for basename()" table in IEEE Std 1003.1-2001.
  25  */
  26         { "/usr/lib",           "lib" },
  27         { "/usr/",              "usr" },
  28         { "/",                  "/" },
  29         { "///",                "/" },
  30         { "//usr//lib//",       "lib" },
  31 /*
  32  * IEEE Std 1003.1-2001:
  33  *
  34  *      If path is a null pointer or points to an empty string,
  35  *      basename() shall return a pointer to the string "." .
  36  */
  37         { "",                   "." },
  38         { NULL,                 "." },
  39 /*
  40  * IEEE Std 1003.1-2001:
  41  *
  42  *      If the string is exactly "//", it is implementation-defined
  43  *      whether "/" or "//" is returned.
  44  *
  45  * The NetBSD implementation returns "/".
  46  */
  47         { "//",                 "/" },
  48
  49         { NULL,                 NULL }
  50 };
  51
  52 struct {
  53         const char *input;
  54         const char *output;
  55 } test_dirname_table[] = {
  56 /*
  57  * The following are taken from the "Sample Input and Output Strings
  58  * for dirname()" table in IEEE Std 1003.1-2001.
  59  */
  60         { "/usr/lib",           "/usr" },
  61         { "/usr/",              "/" },
  62         { "usr",                "." },
  63         { "/",                  "/" },
  64         { ".",                  "." },
  65         { "..",                 "." },
  66 /*
  67  * IEEE Std 1003.1-2001:
  68  *
  69  *      If path is a null pointer or points to an empty string,
  70  *      dirname() shall return a pointer to the string "." .
  71  */
  72         { "",                   "." },
  73         { NULL,                 "." },
  74 /*
  75  * IEEE Std 1003.1-2001:
  76  *
  77  *      Since the meaning of the leading "//" is implementation-defined,
  78  *      dirname("//foo") may return either "//" or "/" (but nothing else).
  79  *
  80  * The NetBSD implementation returns "/".
  81  */
  82         { "//foo",              "/" },
  83 /*
  84  * Make sure the trailing slashes after the directory name component
  85  * get trimmed.  The Std does not talk about this, but this is what
  86  * Solaris 8's dirname(3) does.
  87  */
  88         { "/usr///lib",         "/usr" },
  89
  90         { NULL,                 NULL }
  91 };
  92
  93 ATF_TC(basename_posix);
  94 ATF_TC_HEAD(basename_posix, tc)
  95 {
  96         atf_tc_set_md_var(tc, "descr", "Test basename(3) with POSIX examples");
  97 }
  98
  99 ATF_TC_BODY(basename_posix, tc)
 100 {
 101         char testbuf[32], *base;
 102         int i;
 103
 104         for (i = 0; test_basename_table[i].output != NULL; i++) {
 105                 if (test_basename_table[i].input != NULL) {
 106                         if (strlen(test_basename_table[i].input) >=
 107                             sizeof(testbuf))
 108                                 atf_tc_skip("Testbuf too small!");
 109                         strcpy(testbuf, test_basename_table[i].input);
 110                         base = basename(testbuf);
 111                 } else
 112                         base = basename(NULL);
 113
 114                 /*
 115                  * basename(3) is allowed to modify the input buffer.
 116                  * However, that is considered hostile by some programs,
 117                  * and so we elect to consider this an error.
 118                  *
 119                  * This is not a problem, as basename(3) is also allowed
 120                  * to return a pointer to a statically-allocated buffer
 121                  * (it is explicitly not required to be reentrant).
 122                  */
 123                 if (test_basename_table[i].input != NULL &&
 124                     strcmp(test_basename_table[i].input, testbuf) != 0) {
 125                         fprintf(stderr,
 126                             "Input buffer for \"%s\" was modified\n",
 127                             test_basename_table[i].input);
 128                         atf_tc_fail("Input buffer was modified.");
 129                 }
 130
 131                 /* Make sure the result is correct. */
 132                 if (strcmp(test_basename_table[i].output, base) != 0) {
 133                         fprintf(stderr,
 134                             "Input \"%s\", output \"%s\", expected \"%s\"\n",
 135                             test_basename_table[i].input ==
 136                                 NULL ? "(null)" : test_basename_table[i].input,
 137                             base, test_basename_table[i].output);
 138                         atf_tc_fail("Output does not match expected value.");
 139                 }
 140         }
 141 }
 142
 143
 144 ATF_TC(dirname_posix);
 145 ATF_TC_HEAD(dirname_posix, tc)
 146 {
 147         atf_tc_set_md_var(tc, "descr", "Test dirname(3) with POSIX examples");
 148 }
 149
 150 ATF_TC_BODY(dirname_posix, tc)
 151 {
 152         char testbuf[32], *base;
 153         int i;
 154
 155         for (i = 0; test_dirname_table[i].output != NULL; i++) {
 156                 if (test_dirname_table[i].input != NULL) {
 157                         if (strlen(test_dirname_table[i].input) >=
 158                             sizeof(testbuf))
 159                                 atf_tc_skip("Testbuf too small!");
 160                         strcpy(testbuf, test_dirname_table[i].input);
 161                         base = dirname(testbuf);
 162                 } else
 163                         base = dirname(NULL);
 164
 165                 /*
 166                  * dirname(3) is allowed to modify the input buffer.
 167                  * However, that is considered hostile by some programs,
 168                  * and so we elect to consider this an error.
 169                  *
 170                  * This is not a problem, as dirname(3) is also allowed
 171                  * to return a pointer to a statically-allocated buffer
 172                  * (it is explicitly not required to be reentrant).
 173                  */
 174                 if (test_dirname_table[i].input != NULL &&
 175                     strcmp(test_dirname_table[i].input, testbuf) != 0) {
 176                         fprintf(stderr,
 177                             "Input buffer for \"%s\" was modified\n",
 178                             test_dirname_table[i].input);
 179                         atf_tc_fail("Input buffer was modified.");
 180                 }
 181
 182                 /* Make sure the result is correct. */
 183                 if (strcmp(test_dirname_table[i].output, base) != 0) {
 184                         fprintf(stderr,
 185                             "Input \"%s\", output \"%s\", expected \"%s\"\n",
 186                             test_dirname_table[i].input ==
 187                                 NULL ? "(null)" : test_dirname_table[i].input,
 188                             base, test_dirname_table[i].output);
 189                         atf_tc_fail("Output does not match expected value.");
 190                 }
 191         }
 192 }
 193
 194 ATF_TP_ADD_TCS(tp)
 195 {
 196         ATF_TP_ADD_TC(tp, basename_posix);
 197         ATF_TP_ADD_TC(tp, dirname_posix);
 198
 199         return atf_no_error();
 200 }