tests/test-filenamecat.c

   1 /* Test of concatenation of two arbitrary file names.
   2
   3    Copyright (C) 1996-2007, 2009-2020 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 <stdbool.h>
  25 #include <stddef.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29
  30
  31 int
  32 main (int argc _GL_UNUSED, char *argv[])
  33 {
  34   static char const *const tests[][3] =
  35     {
  36       {"a", "b",   "a/b"},
  37       {"a/", "b",  "a/b"},
  38       {"a/", "/b", "a/b"},
  39       {"a", "/b",  "a/b"},
  40
  41       {"/", "b",  "/b"},
  42       {"/", "/b", "/./b"}, /* This result could be shorter.  */
  43       {"/", "/",  "/./"},  /* This result could be shorter.  */
  44       {"a", "/",  "a/"},   /* this might deserve a diagnostic */
  45       {"/a", "/", "/a/"},  /* this might deserve a diagnostic */
  46       {"a", "//b",  "a//b"},
  47       {"", "a", "a"},  /* this might deserve a diagnostic */
  48     };
  49   unsigned int i;
  50   bool fail = false;
  51
  52   for (i = 0; i < sizeof tests / sizeof tests[0]; i++)
  53     {
  54       char *base_in_result;
  55       char const *const *t = tests[i];
  56       char *res = file_name_concat (t[0], t[1], &base_in_result);
  57       ptrdiff_t prefixlen = base_in_result - res;
  58       size_t t0len = strlen (t[0]);
  59       size_t reslen = strlen (res);
  60       if (strcmp (res, t[2]) != 0)
  61         {
  62           fprintf (stderr, "test #%u: got %s, expected %s\n", i, res, t[2]);
  63           fail = true;
  64         }
  65       if (strcmp (t[1], base_in_result) != 0)
  66         {
  67           fprintf (stderr, "test #%u: base %s != base_in_result %s\n",
  68                    i, t[1], base_in_result);
  69           fail = true;
  70         }
  71       if (! (0 <= prefixlen && prefixlen <= reslen))
  72         {
  73           fprintf (stderr, "test #%u: base_in_result is not in result\n", i);
  74           fail = true;
  75         }
  76       if (reslen < t0len || memcmp (res, t[0], t0len) != 0)
  77         {
  78           fprintf (stderr, "test #%u: %s is not a prefix of %s\n",
  79                    i, t[0], res);
  80           fail = true;
  81         }
  82       free (res);
  83     }
  84   exit (fail ? EXIT_FAILURE : EXIT_SUCCESS);
  85 }