tests/unistr/test-u8-uctomb.c

   1 /* Test of u8_uctomb() function.
   2    Copyright (C) 2010-2017 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 /* Written by Bruno Haible <bruno@clisp.org>, 2010.  */
  18
  19 #include <config.h>
  20
  21 #include "unistr.h"
  22
  23 #include "macros.h"
  24
  25 #define MAGIC 0xBA
  26
  27 int
  28 main ()
  29 {
  30   /* Test ISO 646 character, in particular the NUL character.  */
  31   {
  32     ucs4_t uc;
  33
  34     for (uc = 0; uc < 0x80; uc++)
  35       {
  36         uint8_t buf[5] = { MAGIC, MAGIC, MAGIC, MAGIC, MAGIC };
  37         int ret;
  38
  39         ret = u8_uctomb (buf, uc, 0);
  40         ASSERT (ret == -2);
  41         ASSERT (buf[0] == MAGIC);
  42
  43         ret = u8_uctomb (buf, uc, 1);
  44         ASSERT (ret == 1);
  45         ASSERT (buf[0] == uc);
  46         ASSERT (buf[1] == MAGIC);
  47       }
  48   }
  49
  50   /* Test 2-byte character.  */
  51   {
  52     ucs4_t uc = 0x00D7;
  53     uint8_t buf[5] = { MAGIC, MAGIC, MAGIC, MAGIC, MAGIC };
  54     int ret;
  55
  56     ret = u8_uctomb (buf, uc, 0);
  57     ASSERT (ret == -2);
  58     ASSERT (buf[0] == MAGIC);
  59
  60     ret = u8_uctomb (buf, uc, 1);
  61     ASSERT (ret == -2);
  62     ASSERT (buf[0] == MAGIC);
  63
  64     ret = u8_uctomb (buf, uc, 2);
  65     ASSERT (ret == 2);
  66     ASSERT (buf[0] == 0xC3);
  67     ASSERT (buf[1] == 0x97);
  68     ASSERT (buf[2] == MAGIC);
  69   }
  70
  71   /* Test 3-byte character.  */
  72   {
  73     ucs4_t uc = 0x20AC;
  74     uint8_t buf[5] = { MAGIC, MAGIC, MAGIC, MAGIC, MAGIC };
  75     int ret;
  76
  77     ret = u8_uctomb (buf, uc, 0);
  78     ASSERT (ret == -2);
  79     ASSERT (buf[0] == MAGIC);
  80
  81     ret = u8_uctomb (buf, uc, 1);
  82     ASSERT (ret == -2);
  83     ASSERT (buf[0] == MAGIC);
  84
  85     ret = u8_uctomb (buf, uc, 2);
  86     ASSERT (ret == -2);
  87     ASSERT (buf[0] == MAGIC);
  88     ASSERT (buf[1] == MAGIC);
  89
  90     ret = u8_uctomb (buf, uc, 3);
  91     ASSERT (ret == 3);
  92     ASSERT (buf[0] == 0xE2);
  93     ASSERT (buf[1] == 0x82);
  94     ASSERT (buf[2] == 0xAC);
  95     ASSERT (buf[3] == MAGIC);
  96   }
  97
  98   /* Test 4-byte character.  */
  99   {
 100     ucs4_t uc = 0x10FFFD;
 101     uint8_t buf[5] = { MAGIC, MAGIC, MAGIC, MAGIC, MAGIC };
 102     int ret;
 103
 104     ret = u8_uctomb (buf, uc, 0);
 105     ASSERT (ret == -2);
 106     ASSERT (buf[0] == MAGIC);
 107
 108     ret = u8_uctomb (buf, uc, 1);
 109     ASSERT (ret == -2);
 110     ASSERT (buf[0] == MAGIC);
 111
 112     ret = u8_uctomb (buf, uc, 2);
 113     ASSERT (ret == -2);
 114     ASSERT (buf[0] == MAGIC);
 115     ASSERT (buf[1] == MAGIC);
 116
 117     ret = u8_uctomb (buf, uc, 3);
 118     ASSERT (ret == -2);
 119     ASSERT (buf[0] == MAGIC);
 120     ASSERT (buf[1] == MAGIC);
 121     ASSERT (buf[2] == MAGIC);
 122
 123     ret = u8_uctomb (buf, uc, 4);
 124     ASSERT (ret == 4);
 125     ASSERT (buf[0] == 0xF4);
 126     ASSERT (buf[1] == 0x8F);
 127     ASSERT (buf[2] == 0xBF);
 128     ASSERT (buf[3] == 0xBD);
 129     ASSERT (buf[4] == MAGIC);
 130   }
 131
 132   /* Test invalid characters.  */
 133   {
 134     ucs4_t invalid[] = { 0x110000, 0xD800, 0xDBFF, 0xDC00, 0xDFFF };
 135     uint8_t buf[5] = { MAGIC, MAGIC, MAGIC, MAGIC, MAGIC };
 136     size_t i;
 137
 138     for (i = 0; i < SIZEOF (invalid); i++)
 139       {
 140         ucs4_t uc = invalid[i];
 141         int n;
 142
 143         for (n = 0; n <= 4; n++)
 144           {
 145             int ret = u8_uctomb (buf, uc, n);
 146             ASSERT (ret == -1);
 147             ASSERT (buf[0] == MAGIC);
 148             ASSERT (buf[1] == MAGIC);
 149             ASSERT (buf[2] == MAGIC);
 150             ASSERT (buf[3] == MAGIC);
 151             ASSERT (buf[4] == MAGIC);
 152           }
 153       }
 154   }
 155
 156   return 0;
 157 }