tests/test-filenamecat.c

   1 /* Test of concatenation of two arbitrary file names.
   2
   3    Copyright (C) 1996-2007, 2009-2025 Free Software Foundation, Inc.
   4
   5    This program is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation, either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program 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
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  17
  18 /* Written by Jim Meyering.  */
  19
  20 #include <config.h>
  21
  22 #include "filenamecat.h"
  23
  24 #include "idx.h"
  25
  26 #include <stddef.h>
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30
  31
  32 int
  33 main (_GL_UNUSED int argc, char *argv[])
  34 {
  35   static char const *const tests[][3] =
  36     {
  37       {"a", "b",   "a/b"},
  38       {"a/", "b",  "a/b"},
  39       {"a/", "/b", "a/b"},
  40       {"a", "/b",  "a/b"},
  41
  42       {"/", "b",  "/b"},
  43       {"/", "/b", "/./b"}, /* This result could be shorter.  */
  44       {"/", "/",  "/./"},  /* This result could be shorter.  */
  45       {"a", "/",  "a/"},   /* this might deserve a diagnostic */
  46       {"/a", "/", "/a/"},  /* this might deserve a diagnostic */
  47       {"a", "//b",  "a//b"},
  48       {"", "a", "a"},  /* this might deserve a diagnostic */
  49     };
  50   unsigned int i;
  51   bool fail = false;
  52
  53   for (i = 0; i < sizeof tests / sizeof tests[0]; i++)
  54     {
  55       char *base_in_result;
  56       char const *const *t = tests[i];
  57       char *res = file_name_concat (t[0], t[1], &base_in_result);
  58       idx_t prefixlen = base_in_result - res;
  59       size_t t0len = strlen (t[0]);
  60       size_t reslen = strlen (res);
  61       if (strcmp (res, t[2]) != 0)
  62         {
  63           fprintf (stderr, "test #%u: got %s, expected %s\n", i, res, t[2]);
  64           fail = true;
  65         }
  66       if (strcmp (t[1], base_in_result) != 0)
  67         {
  68           fprintf (stderr, "test #%u: base %s != base_in_result %s\n",
  69                    i, t[1], base_in_result);
  70           fail = true;
  71         }
  72       if (! (0 <= prefixlen && prefixlen <= reslen))
  73         {
  74           fprintf (stderr, "test #%u: base_in_result is not in result\n", i);
  75           fail = true;
  76         }
  77       if (reslen < t0len || memcmp (res, t[0], t0len) != 0)
  78         {
  79           fprintf (stderr, "test #%u: %s is not a prefix of %s\n",
  80                    i, t[0], res);
  81           fail = true;
  82         }
  83       free (res);
  84     }
  85   exit (fail ? EXIT_FAILURE : EXIT_SUCCESS);
  86 }