path: root/wcsmbs/test-c8rtomb.c

/* Test c8rtomb.
   Copyright (C) 2022-2023 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <errno.h>
#include <limits.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <uchar.h>
#include <wchar.h>
#include <support/check.h>
#include <support/support.h>

static int
test_truncated_code_unit_sequence (void)
{
  /* Missing trailing code unit for a two code byte unit sequence.  */
  {
    const char8_t *u8s = (const char8_t*) u8"\xC2";
    char buf[MB_LEN_MAX] = { 0 };
    mbstate_t s = { 0 };

    TEST_COMPARE (c8rtomb (buf, u8s[0], &s), (size_t)  0);
    errno = 0;
    TEST_COMPARE (c8rtomb (buf, u8s[1], &s), (size_t) -1);
    TEST_COMPARE (errno, EILSEQ);
  }

  /* Missing first trailing code unit for a three byte code unit sequence.  */
  {
    const char8_t *u8s = (const char8_t*) u8"\xE0";
    char buf[MB_LEN_MAX] = { 0 };
    mbstate_t s = { 0 };

    TEST_COMPARE (c8rtomb (buf, u8s[0], &s), (size_t)  0);
    errno = 0;
    TEST_COMPARE (c8rtomb (buf, u8s[1], &s), (size_t) -1);
    TEST_COMPARE (errno, EILSEQ);
  }

  /* Missing second trailing code unit for a three byte code unit sequence.  */
  {
    const char8_t *u8s = (const char8_t*) u8"\xE0\xA0";
    char buf[MB_LEN_MAX] = { 0 };
    mbstate_t s = { 0 };

    TEST_COMPARE (c8rtomb (buf, u8s[0], &s), (size_t)  0);
    TEST_COMPARE (c8rtomb (buf, u8s[1], &s), (size_t)  0);
    errno = 0;
    TEST_COMPARE (c8rtomb (buf, u8s[2], &s), (size_t) -1);
    TEST_COMPARE (errno, EILSEQ);
  }

  /* Missing first trailing code unit for a four byte code unit sequence.  */
  {
    const char8_t *u8s = (const char8_t*) u8"\xF0";
    char buf[MB_LEN_MAX] = { 0 };
    mbstate_t s = { 0 };

    TEST_COMPARE (c8rtomb (buf, u8s[0], &s), (size_t)  0);
    errno = 0;
    TEST_COMPARE (c8rtomb (buf, u8s[1], &s), (size_t) -1);
    TEST_COMPARE (errno, EILSEQ);
  }

  /* Missing second trailing code unit for a four byte code unit sequence.  */
  {
    const char8_t *u8s = (const char8_t*) u8"\xF0\x90"