misc/tst-dirname.c

   1 /* Test program for dirname function a la XPG.
   2    Copyright (C) 1996-2014 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #define _GNU_SOURCE     1
  21 #include <libgen.h>
  22 #include <stdio.h>
  23 #include <string.h>
  24
  25
  26 static int
  27 test (const char *input, const char *result)
  28 {
  29   int retval;
  30   char *cp;
  31   cp = strdupa (input);
  32   cp = dirname (cp);
  33   retval = strcmp (cp, result);
  34   if (retval)
  35     printf ("dirname(\"%s\") should be \"%s\", but is \"%s\"\n",
  36             input, result, cp);
  37   return retval;
  38 }
  39
  40 int
  41 main (void)
  42 {
  43   int result = 0;
  44
  45   /* These are the examples given in XPG4.2.  */
  46   result |= test ("/usr/lib", "/usr");
  47   result |= test ("/usr/", "/");
  48   result |= test ("usr", ".");
  49   result |= test ("/", "/");
  50   result |= test (".", ".");
  51   result |= test ("..", ".");
  52
  53   /* Some more tests.   */
  54   result |= test ("/usr/lib/", "/usr");
  55   result |= test ("/usr", "/");
  56   result |= test ("a//", ".");
  57   result |= test ("a////", ".");
  58   result |= test ("////usr", "/");
  59   result |= test ("////usr//", "/");
  60   result |= test ("//usr", "//");
  61   result |= test ("//usr//", "//");
  62   result |= test ("//", "//");
  63
  64   /* Other Unix implementations behave like this.  */
  65   result |= test ("x///y", "x");
  66   result |= test ("x/////y", "x");
  67
  68   return result != 0;
  69 }