regress/lib/libc/basename/test.c

   1 /*      $NetBSD: test.c,v 1.2 2003/07/26 19:38:45 salo 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 <assert.h>
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include <libgen.h>
  15
  16 struct {
  17         const char *input;
  18         const char *output;
  19 } test_table[] = {
  20 /*
  21  * The following are taken from the "Sample Input and Output Strings
  22  * for basename()" table in IEEE Std 1003.1-2001.
  23  */
  24         { "/usr/lib",           "lib" },
  25         { "/usr/",              "usr" },
  26         { "/",                  "/" },
  27         { "///",                "/" },
  28         { "//usr//lib//",       "lib" },
  29 /*
  30  * IEEE Std 1003.1-2001:
  31  *
  32  *      If path is a null pointer or points to an empty string,
  33  *      basename() shall return a pointer to the string "." .
  34  */
  35         { "",                   "." },
  36         { NULL,                 "." },
  37 /*
  38  * IEEE Std 1003.1-2001:
  39  *
  40  *      If the string is exactly "//", it is implementation-defined
  41  *      whether "/" or "//" is returned.
  42  *
  43  * The NetBSD implementation returns "/".
  44  */
  45         { "//",                 "/" },
  46
  47         { NULL,                 NULL }
  48 };
  49
  50 int     main(int argc, char *argv[]);
  51
  52 int
  53 main(int argc, char *argv[])
  54 {
  55         char testbuf[32], *base;
  56         int i, rv = 0;
  57
  58         for (i = 0; test_table[i].output != NULL; i++) {
  59                 if (test_table[i].input != NULL) {
  60                         assert(strlen(test_table[i].input) < sizeof(testbuf));
  61                         strcpy(testbuf, test_table[i].input);
  62                         base = basename(testbuf);
  63                 } else
  64                         base = basename(NULL);
  65
  66                 /*
  67                  * basename(3) is allowed to modify the input buffer.
  68                  * However, that is considered hostile by some programs,
  69                  * and so we elect to consider this an error.
  70                  *
  71                  * This is not a problem, as basename(3) is also allowed
  72                  * to return a pointer to a statically-allocated buffer
  73                  * (it is explicitly not required to be reentrant).
  74                  */
  75                 if (test_table[i].input != NULL &&
  76                     strcmp(test_table[i].input, testbuf) != 0) {
  77                         fprintf(stderr,
  78                             "Input buffer for \"%s\" was modified\n",
  79                             test_table[i].input);
  80                         rv = 1;
  81                 }
  82
  83                 /* Make sure the result is correct. */
  84                 if (strcmp(test_table[i].output, base) != 0) {
  85                         fprintf(stderr,
  86                             "Input \"%s\", output \"%s\", expected \"%s\"\n",
  87                             test_table[i].input == NULL ? "(null)"
  88                                                         : test_table[i].input,
  89                             base, test_table[i].output);
  90                         rv = 1;
  91                 }
  92         }
  93
  94         exit(rv);
  95 }