kc3-lang/gnulib/tests/unistdio/test-u16-asnprintf1.h

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• Hash : 7b089321
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  Date : 2025-01-01T09:24:36
  

  maint: run 'make update-copyright'
  

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• tests/unistdio/test-u16-asnprintf1.h

• /* Test of u16_[v]asnprintf() function.
     Copyright (C) 2007, 2009-2025 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>, 2007.  */
  
  static void
  test_function (uint16_t * (*my_asnprintf) (uint16_t *, size_t *, const char *, ...))
  {
    uint16_t buf[8];
    int size;
  
    /* Test return value convention.  */
  
    for (size = 0; size <= 8; size++)
      {
        size_t length = size;
        uint16_t *result = my_asnprintf (NULL, &length, "%d", 12345);
        static const uint16_t expected[] =
          { '1', '2', '3', '4', '5', 0 };
        ASSERT (result != NULL);
        ASSERT (u16_strcmp (result, expected) == 0);
        ASSERT (length == 5);
        free (result);
      }
  
    for (size = 0; size <= 8; size++)
      {
        static const uint16_t initializer[] =
          { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F', 0 };
        static const uint16_t expected[] =
          { '1', '2', '3', '4', '5', 0 };
        size_t length;
        uint16_t *result;
  
        u16_cpy (buf, initializer, 8);
        length = size;
        result = my_asnprintf (buf, &length, "%d", 12345);
        ASSERT (result != NULL);
        ASSERT (u16_strcmp (result, expected) == 0);
        ASSERT (length == 5);
        if (size < 6)
          ASSERT (result != buf);
        ASSERT (u16_cmp (buf + size, initializer + size, 8 - size) == 0);
        if (result != buf)
          free (result);
      }
  
    /* Verify that u16_[v]asnprintf() rejects a width > 2 GiB, < 4 GiB.  */
    {
      size_t length;
      uint16_t *s = my_asnprintf (NULL, &length, "x%03000000000dy\n", -17);
      ASSERT (s == NULL);
      ASSERT (errno == EOVERFLOW);
    }
    {
      static const uint16_t arg[] = { '@', 0 };
      size_t length;
      uint16_t *s = my_asnprintf (NULL, &length, "x%03000000000lUy\n", arg);
      ASSERT (s == NULL);
      ASSERT (errno == EOVERFLOW);
    }
  
    /* Verify that u16_[v]asnprintf() rejects a width > 4 GiB.  */
    {
      size_t length;
      uint16_t *s =
        my_asnprintf (NULL, &length,
                      "x%04294967306dy\n", /* 2^32 + 10 */
                      -17);
      ASSERT (s == NULL);
      ASSERT (errno == EOVERFLOW);
    }
    {
      static const uint16_t arg[] = { '@', 0 };
      size_t length;
      uint16_t *s =
        my_asnprintf (NULL, &length,
                      "x%04294967306lUy\n", /* 2^32 + 10 */
                      arg);
      ASSERT (s == NULL);
      ASSERT (errno == EOVERFLOW);
    }
    {
      size_t length;
      uint16_t *s =
        my_asnprintf (NULL, &length,
                      "x%018446744073709551626dy\n", /* 2^64 + 10 */
                      -17);
      ASSERT (s == NULL);
      ASSERT (errno == EOVERFLOW);
    }
    {
      static const uint16_t arg[] = { '@', 0 };
      size_t length;
      uint16_t *s =
        my_asnprintf (NULL, &length,
                      "x%018446744073709551626lUy\n", /* 2^64 + 10 */
                      arg);
      ASSERT (s == NULL);
      ASSERT (errno == EOVERFLOW);
    }
  }
  

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