tests/libpspp/str-test.c

   1 /* PSPP - a program for statistical analysis.
   2    Copyright (C) 2008, 2010, 2014 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 <http://www.gnu.org/licenses/>. */
  16
  17 #include <config.h>
  18
  19 #include <libpspp/str.h>
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 \f
  24 /* Exit with a failure code.
  25    (Place a breakpoint on this function while debugging.) */
  26 static void
  27 check_die (void)
  28 {
  29   exit (EXIT_FAILURE);
  30 }
  31 \f
  32 static void
  33 check_26adic (unsigned long int number, const char *expected_string)
  34 {
  35   char string[F26ADIC_STRLEN_MAX + 1];
  36   str_format_26adic (number, true, string, sizeof string);
  37   if (strcmp (string, expected_string))
  38     {
  39       printf ("base-26 of %lu: expected \"%s\", got \"%s\"\n",
  40               number, expected_string, string);
  41       check_die ();
  42     }
  43 }
  44
  45 static void
  46 test_format_26adic (void)
  47 {
  48   check_26adic (0, "");
  49   check_26adic (1, "A");
  50   check_26adic (2, "B");
  51   check_26adic (26, "Z");
  52   check_26adic (27, "AA");
  53   check_26adic (28, "AB");
  54   check_26adic (29, "AC");
  55   check_26adic (18278, "ZZZ");
  56   check_26adic (18279, "AAAA");
  57   check_26adic (19010, "ABCD");
  58 }
  59 \f
  60 /* Main program. */
  61
  62 struct test
  63   {
  64     const char *name;
  65     const char *description;
  66     void (*function) (void);
  67   };
  68
  69 static const struct test tests[] =
  70   {
  71     {
  72       "format-26adic",
  73       "format 26-adic strings",
  74       test_format_26adic
  75     }
  76   };
  77
  78 enum { N_TESTS = sizeof tests / sizeof *tests };
  79
  80 int
  81 main (int argc, char *argv[])
  82 {
  83   int i;
  84
  85   if (argc != 2)
  86     {
  87       fprintf (stderr, "exactly one argument required; use --help for help\n");
  88       return EXIT_FAILURE;
  89     }
  90   else if (!strcmp (argv[1], "--help"))
  91     {
  92       printf ("%s: test string library\n"
  93               "usage: %s TEST-NAME\n"
  94               "where TEST-NAME is one of the following:\n",
  95               argv[0], argv[0]);
  96       for (i = 0; i < N_TESTS; i++)
  97         printf ("  %s\n    %s\n", tests[i].name, tests[i].description);
  98       return 0;
  99     }
 100   else
 101     {
 102       for (i = 0; i < N_TESTS; i++)
 103         if (!strcmp (argv[1], tests[i].name))
 104           {
 105             tests[i].function ();
 106             return 0;
 107           }
 108
 109       fprintf (stderr, "unknown test %s; use --help for help\n", argv[1]);
 110       return EXIT_FAILURE;
 111     }
 112 }