kc3-lang/gnulib/tests/unistr/test-u32-to-u16.c

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  Date : 2017-09-13T00:48:18
  

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• tests/unistr/test-u32-to-u16.c

• /* Test of u32_to_u16() function.
     Copyright (C) 2010-2017 Free Software Foundation, Inc.
  
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 3 of the License, or
     (at your option) any later version.
  
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  /* Written by Bruno Haible <bruno@clisp.org>, 2010.  */
  
  #include <config.h>
  
  #include "unistr.h"
  
  #include <errno.h>
  
  #include "macros.h"
  
  static int
  check (const uint32_t *input, size_t input_length,
         const uint16_t *expected, size_t expected_length)
  {
    size_t length;
    uint16_t *result;
  
    /* Test return conventions with resultbuf == NULL.  */
    result = u32_to_u16 (input, input_length, NULL, &length);
    if (!(result != NULL))
      return 1;
    if (!(length == expected_length))
      return 2;
    if (!(u16_cmp (result, expected, expected_length) == 0))
      return 3;
    free (result);
  
    /* Test return conventions with resultbuf too small.  */
    if (expected_length > 0)
      {
        uint16_t *preallocated;
  
        length = expected_length - 1;
        preallocated = (uint16_t *) malloc (length * sizeof (uint16_t));
        result = u32_to_u16 (input, input_length, preallocated, &length);
        if (!(result != NULL))
          return 4;
        if (!(result != preallocated))
          return 5;
        if (!(length == expected_length))
          return 6;
        if (!(u16_cmp (result, expected, expected_length) == 0))
          return 7;
        free (result);
        free (preallocated);
      }
  
    /* Test return conventions with resultbuf large enough.  */
    {
      uint16_t *preallocated;
  
      length = expected_length;
      preallocated = (uint16_t *) malloc (length * sizeof (uint16_t));
      result = u32_to_u16 (input, input_length, preallocated, &length);
      if (!(result != NULL))
        return 8;
      if (!(preallocated == NULL || result == preallocated))
        return 9;
      if (!(length == expected_length))
        return 10;
      if (!(u16_cmp (result, expected, expected_length) == 0))
        return 11;
      free (preallocated);
    }
  
    return 0;
  }
  
  int
  main ()
  {
    /* Empty string.  */
    ASSERT (check (NULL, 0, NULL, 0) == 0);
  
    /* Simple string.  */
    { /* "Grüß Gott. Здравствуйте! x=(-b±sqrt(b²-4ac))/(2a)  日本語,中文,한글" */
      static const uint32_t input[] =
        { 'G', 'r', 0x00FC, 0x00DF, ' ', 'G', 'o', 't', 't', '.', ' ',
          0x0417, 0x0434, 0x0440, 0x0430, 0x0432, 0x0441, 0x0442, 0x0432, 0x0443,
          0x0439, 0x0442, 0x0435, '!', ' ',
          'x', '=', '(', '-', 'b', 0x00B1, 's', 'q', 'r', 't', '(', 'b', 0x00B2,
          '-', '4', 'a', 'c', ')', ')', '/', '(', '2', 'a', ')', ' ', ' ',
          0x65E5, 0x672C, 0x8A9E, ',', 0x4E2D, 0x6587, ',', 0xD55C, 0xAE00, '\n'
        };
      static const uint16_t expected[] =
        { 'G', 'r', 0x00FC, 0x00DF, ' ', 'G', 'o', 't', 't', '.', ' ',
          0x0417, 0x0434, 0x0440, 0x0430, 0x0432, 0x0441, 0x0442, 0x0432, 0x0443,
          0x0439, 0x0442, 0x0435, '!', ' ',
          'x', '=', '(', '-', 'b', 0x00B1, 's', 'q', 'r', 't', '(', 'b', 0x00B2,
          '-', '4', 'a', 'c', ')', ')', '/', '(', '2', 'a', ')', ' ', ' ',
          0x65E5, 0x672C, 0x8A9E, ',', 0x4E2D, 0x6587, ',', 0xD55C, 0xAE00, '\n'
        };
      ASSERT (check (input, SIZEOF (input), expected, SIZEOF (expected)) == 0);
    }
  
    /* String with characters outside the BMP.  */
    {
      static const uint32_t input[] =
        { '-', '(', 0x1D51E, 0x00D7, 0x1D51F, ')', '=',
          0x1D51F, 0x00D7, 0x1D51E
        };
      static const uint16_t expected[] =
        { '-', '(', 0xD835, 0xDD1E, 0x00D7, 0xD835, 0xDD1F, ')', '=',
          0xD835, 0xDD1F, 0x00D7, 0xD835, 0xDD1E
        };
      ASSERT (check (input, SIZEOF (input), expected, SIZEOF (expected)) == 0);
    }
  
    /* Invalid input.  */
    {
      static const uint32_t input[] = { 'x', 0x340000, 0x50000000, 'y' };
  #if 0 /* Currently invalid input is rejected, not accommodated.  */
      static const uint16_t expected[] = { 'x', 0xFFFD, 0xFFFD, 'y' };
      ASSERT (check (input, SIZEOF (input), expected, SIZEOF (expected)) == 0);
  #else
      size_t length;
      uint16_t *result;
      uint16_t preallocated[10];
  
      /* Test return conventions with resultbuf == NULL.  */
      result = u32_to_u16 (input, SIZEOF (input), NULL, &length);
      ASSERT (result == NULL);
      ASSERT (errno == EILSEQ);
  
      /* Test return conventions with resultbuf too small.  */
      length = 1;
      result = u32_to_u16 (input, SIZEOF (input), preallocated, &length);
      ASSERT (result == NULL);
      ASSERT (errno == EILSEQ);
  
      /* Test return conventions with resultbuf large enough.  */
      length = SIZEOF (preallocated);
      result = u32_to_u16 (input, SIZEOF (input), preallocated, &length);
      ASSERT (result == NULL);
      ASSERT (errno == EILSEQ);
  #endif
    }
  
    return 0;
  }
  

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