tests/unistr/test-u16-next.c

   1 /* Test of u16_next() function.
   2    Copyright (C) 2010-2020 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>, 2010.  */
  18
  19 #include <config.h>
  20
  21 #include "unistr.h"
  22
  23 #include "macros.h"
  24
  25 int
  26 main ()
  27 {
  28   ucs4_t uc;
  29   const uint16_t *ret;
  30
  31   /* Test NUL unit input.  */
  32   {
  33     static const uint16_t input[] = { 0 };
  34     uc = 0xBADFACE;
  35     ret = u16_next (&uc, input);
  36     ASSERT (ret == NULL);
  37     ASSERT (uc == 0);
  38   }
  39
  40   /* Test ISO 646 unit input.  */
  41   {
  42     ucs4_t c;
  43     uint16_t buf[2];
  44
  45     for (c = 1; c < 0x80; c++)
  46       {
  47         buf[0] = c;
  48         buf[1] = 0;
  49         uc = 0xBADFACE;
  50         ret = u16_next (&uc, buf);
  51         ASSERT (ret == buf + 1);
  52         ASSERT (uc == c);
  53       }
  54   }
  55
  56   /* Test BMP unit input.  */
  57   {
  58     static const uint16_t input[] = { 0x20AC, 0 };
  59     uc = 0xBADFACE;
  60     ret = u16_next (&uc, input);
  61     ASSERT (ret == input + 1);
  62     ASSERT (uc == 0x20AC);
  63   }
  64
  65   /* Test 2-units character input.  */
  66   {
  67     static const uint16_t input[] = { 0xD835, 0xDD1F, 0 };
  68     uc = 0xBADFACE;
  69     ret = u16_next (&uc, input);
  70     ASSERT (ret == input + 2);
  71     ASSERT (uc == 0x1D51F);
  72   }
  73
  74   /* Test incomplete/invalid 1-unit input.  */
  75   {
  76     static const uint16_t input[] = { 0xD835, 0 };
  77     uc = 0xBADFACE;
  78     ret = u16_next (&uc, input);
  79     ASSERT (ret == NULL);
  80     ASSERT (uc == 0xFFFD);
  81   }
  82   {
  83     static const uint16_t input[] = { 0xDD1F, 0 };
  84     uc = 0xBADFACE;
  85     ret = u16_next (&uc, input);
  86     ASSERT (ret == NULL);
  87     ASSERT (uc == 0xFFFD);
  88   }
  89
  90   return 0;
  91 }