tests/test-trim.c

   1 /* Tests of removing leading and/or trailing whitespaces.
   2    Copyright (C) 2023-2024 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Bruno Haible <bruno@clisp.org>, 2023.  */
  18
  19 #include <config.h>
  20
  21 /* Specification.  */
  22 #include "trim.h"
  23
  24 #include <locale.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28
  29 #include "macros.h"
  30
  31 static void
  32 test_ascii (void)
  33 {
  34   {
  35     char *result = trim ("");
  36     ASSERT (strcmp (result, "") == 0);
  37     free (result);
  38     result = trim_leading ("");
  39     ASSERT (strcmp (result, "") == 0);
  40     free (result);
  41     result = trim_trailing ("");
  42     ASSERT (strcmp (result, "") == 0);
  43     free (result);
  44   }
  45
  46   {
  47     char *result = trim ("  ");
  48     ASSERT (strcmp (result, "") == 0);
  49     free (result);
  50     result = trim_leading ("  ");
  51     ASSERT (strcmp (result, "") == 0);
  52     free (result);
  53     result = trim_trailing ("  ");
  54     ASSERT (strcmp (result, "") == 0);
  55     free (result);
  56   }
  57
  58   {
  59     char *result = trim ("Hello world");
  60     ASSERT (strcmp (result, "Hello world") == 0);
  61     free (result);
  62     result = trim_leading ("Hello world");
  63     ASSERT (strcmp (result, "Hello world") == 0);
  64     free (result);
  65     result = trim_trailing ("Hello world");
  66     ASSERT (strcmp (result, "Hello world") == 0);
  67     free (result);
  68   }
  69
  70   {
  71     char *result = trim ("   Hello world");
  72     ASSERT (strcmp (result, "Hello world") == 0);
  73     free (result);
  74     result = trim_leading ("   Hello world");
  75     ASSERT (strcmp (result, "Hello world") == 0);
  76     free (result);
  77     result = trim_trailing ("   Hello world");
  78     ASSERT (strcmp (result, "   Hello world") == 0);
  79     free (result);
  80   }
  81
  82   {
  83     char *result = trim ("Hello world  ");
  84     ASSERT (strcmp (result, "Hello world") == 0);
  85     free (result);
  86     result = trim_leading ("Hello world  ");
  87     ASSERT (strcmp (result, "Hello world  ") == 0);
  88     free (result);
  89     result = trim_trailing ("Hello world  ");
  90     ASSERT (strcmp (result, "Hello world") == 0);
  91     free (result);
  92   }
  93
  94   {
  95     char *result = trim ("   Hello world  ");
  96     ASSERT (strcmp (result, "Hello world") == 0);
  97     free (result);
  98     result = trim_leading ("   Hello world  ");
  99     ASSERT (strcmp (result, "Hello world  ") == 0);
 100     free (result);
 101     result = trim_trailing ("   Hello world  ");
 102     ASSERT (strcmp (result, "   Hello world") == 0);
 103     free (result);
 104   }
 105 }
 106
 107 int
 108 main (int argc, char *argv[])
 109 {
 110   /* configure should already have checked that the locale is supported.  */
 111   if (setlocale (LC_ALL, "") == NULL)
 112     return 1;
 113
 114   /* Test ASCII arguments.  */
 115   test_ascii ();
 116
 117   if (argc > 1)
 118     switch (argv[1][0])
 119       {
 120       case '1':
 121         /* C or POSIX locale.  */
 122         return test_exit_status;
 123
 124       case '2':
 125         /* Locale encoding is UTF-8.  */
 126         { /* U+2002 EN SPACE */
 127           char *result = trim ("\342\200\202\302\267foo\342\200\202");
 128           ASSERT (strcmp (result, "\302\267foo") == 0);
 129           free (result);
 130         }
 131         { /* U+3000 IDEOGRAPHIC SPACE */
 132           char *result = trim ("\343\200\200\302\267foo\343\200\200");
 133           ASSERT (strcmp (result, "\302\267foo") == 0);
 134           free (result);
 135         }
 136         return test_exit_status;
 137
 138       case '3':
 139         /* Locale encoding is GB18030.  */
 140         #if !(defined __FreeBSD__ || defined __DragonFly__ || defined __sun)
 141         { /* U+2002 EN SPACE */
 142           char *result = trim ("\201\066\243\070\241\244foo\201\066\243\070");
 143           ASSERT (strcmp (result, "\241\244foo") == 0);
 144           free (result);
 145         }
 146         #endif
 147         #if !(defined __FreeBSD__ || defined __DragonFly__ || defined __illumos__)
 148         { /* U+3000 IDEOGRAPHIC SPACE */
 149           char *result = trim ("\241\241\241\244foo\241\241");
 150           ASSERT (strcmp (result, "\241\244foo") == 0);
 151           free (result);
 152         }
 153         #endif
 154         return test_exit_status;
 155       }
 156
 157   return 1;
 158 }