misc/tst-dirname.c

   1 /* Test program for dirname function a la XPG.
   2    Copyright (C) 1996-2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library 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 GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #define _GNU_SOURCE     1
  20 #include <libgen.h>
  21 #include <stdio.h>
  22 #include <string.h>
  23
  24
  25 static int
  26 test (const char *input, const char *result)
  27 {
  28   int retval;
  29   char *cp;
  30   cp = strdupa (input);
  31   cp = dirname (cp);
  32   retval = strcmp (cp, result);
  33   if (retval)
  34     printf ("dirname(\"%s\") should be \"%s\", but is \"%s\"\n",
  35             input, result, cp);
  36   return retval;
  37 }
  38
  39 static int
  40 do_test (void)
  41 {
  42   int result = 0;
  43
  44   /* These are the examples given in XPG4.2.  */
  45   result |= test ("/usr/lib", "/usr");
  46   result |= test ("/usr/", "/");
  47   result |= test ("usr", ".");
  48   result |= test ("/", "/");
  49   result |= test (".", ".");
  50   result |= test ("..", ".");
  51
  52   /* Some more tests.   */
  53   result |= test ("/usr/lib/", "/usr");
  54   result |= test ("/usr", "/");
  55   result |= test ("a//", ".");
  56   result |= test ("a////", ".");
  57   result |= test ("////usr", "/");
  58   result |= test ("////usr//", "/");
  59   result |= test ("//usr", "//");
  60   result |= test ("//usr//", "//");
  61   result |= test ("//", "//");
  62
  63   /* Other Unix implementations behave like this.  */
  64   result |= test ("x///y", "x");
  65   result |= test ("x/////y", "x");
  66
  67   return result != 0;
  68 }
  69
  70 #define TEST_FUNCTION do_test ()
  71 #include "../test-skeleton.c"