1  /* Test of u8_mblen() function.
       2     Copyright (C) 2010-2023 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    int ret;
      29  
      30    /* Test zero-length input.  */
      31    {
      32      static const uint8_t input[] = "";
      33      ret = u8_mblen (input, 0);
      34      ASSERT (ret == -1);
      35    }
      36  
      37    /* Test NUL unit input.  */
      38    {
      39      static const uint8_t input[] = "";
      40      ret = u8_mblen (input, 1);
      41      ASSERT (ret == 0);
      42    }
      43  
      44    /* Test ISO 646 unit input.  */
      45    {
      46      ucs4_t c;
      47      uint8_t buf[1];
      48  
      49      for (c = 1; c < 0x80; c++)
      50        {
      51          buf[0] = c;
      52          ret = u8_mblen (buf, 1);
      53          ASSERT (ret == 1);
      54        }
      55    }
      56  
      57    /* Test 2-byte character input.  */
      58    {
      59      static const uint8_t input[] = { 0xC3, 0x97 };
      60      ret = u8_mblen (input, 2);
      61      ASSERT (ret == 2);
      62    }
      63  
      64    /* Test 3-byte character input.  */
      65    {
      66      static const uint8_t input[] = { 0xE2, 0x82, 0xAC };
      67      ret = u8_mblen (input, 3);
      68      ASSERT (ret == 3);
      69    }
      70  
      71    /* Test 4-byte character input.  */
      72    {
      73      static const uint8_t input[] = { 0xF4, 0x8F, 0xBF, 0xBD };
      74      ret = u8_mblen (input, 4);
      75      ASSERT (ret == 4);
      76    }
      77  
      78    /* Test incomplete/invalid 1-byte input.  */
      79    {
      80      static const uint8_t input[] = { 0xC1 };
      81      ret = u8_mblen (input, 1);
      82      ASSERT (ret == -1);
      83    }
      84    {
      85      static const uint8_t input[] = { 0xC3 };
      86      ret = u8_mblen (input, 1);
      87      ASSERT (ret == -1);
      88    }
      89    {
      90      static const uint8_t input[] = { 0xE2 };
      91      ret = u8_mblen (input, 1);
      92      ASSERT (ret == -1);
      93    }
      94    {
      95      static const uint8_t input[] = { 0xF4 };
      96      ret = u8_mblen (input, 1);
      97      ASSERT (ret == -1);
      98    }
      99    {
     100      static const uint8_t input[] = { 0xFE };
     101      ret = u8_mblen (input, 1);
     102      ASSERT (ret == -1);
     103    }
     104  
     105    /* Test incomplete/invalid 2-byte input.  */
     106    {
     107      static const uint8_t input[] = { 0xE0, 0x9F };
     108      ret = u8_mblen (input, 2);
     109      ASSERT (ret == -1);
     110    }
     111    {
     112      static const uint8_t input[] = { 0xE2, 0x82 };
     113      ret = u8_mblen (input, 2);
     114      ASSERT (ret == -1);
     115    }
     116    {
     117      static const uint8_t input[] = { 0xE2, 0xD0 };
     118      ret = u8_mblen (input, 2);
     119      ASSERT (ret == -1);
     120    }
     121    {
     122      static const uint8_t input[] = { 0xF0, 0x8F };
     123      ret = u8_mblen (input, 2);
     124      ASSERT (ret == -1);
     125    }
     126    {
     127      static const uint8_t input[] = { 0xF3, 0x8F };
     128      ret = u8_mblen (input, 2);
     129      ASSERT (ret == -1);
     130    }
     131    {
     132      static const uint8_t input[] = { 0xF3, 0xD0 };
     133      ret = u8_mblen (input, 2);
     134      ASSERT (ret == -1);
     135    }
     136  
     137    /* Test incomplete/invalid 3-byte input.  */
     138    {
     139      static const uint8_t input[] = { 0xF3, 0x8F, 0xBF };
     140      ret = u8_mblen (input, 3);
     141      ASSERT (ret == -1);
     142    }
     143    {
     144      static const uint8_t input[] = { 0xF3, 0xD0, 0xBF };
     145      ret = u8_mblen (input, 3);
     146      ASSERT (ret == -1);
     147    }
     148    {
     149      static const uint8_t input[] = { 0xF3, 0x8F, 0xD0 };
     150      ret = u8_mblen (input, 3);
     151      ASSERT (ret == -1);
     152    }
     153  
     154    return 0;
     155  }