/* Unit tests for dl-hwcaps.c.

   Copyright (C) 2020 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 <array_length.h>

#include <dl-hwcaps.h>

#include <string.h>

#include <support/check.h>

static void

check_split_masked (const char *input, int32_t bitmask, const char *mask,

                    const char *expected[], size_t expected_length)

{

  struct dl_hwcaps_split_masked split;

  _dl_hwcaps_split_masked_init (&split, input, bitmask, mask);

  size_t index = 0;

  while (_dl_hwcaps_split_masked (&split))

    {

      TEST_VERIFY_EXIT (index < expected_length);

      TEST_COMPARE_BLOB (expected[index], strlen (expected[index]),

                         split.split.segment, split.split.length);

      ++index;

    }

  TEST_COMPARE (index, expected_length);

}

static void

check_split (const char *input,

             const char *expected[], size_t expected_length)

{

  struct dl_hwcaps_split split;

  _dl_hwcaps_split_init (&split, input);

  size_t index = 0;

  while (_dl_hwcaps_split (&split))

    {

      TEST_VERIFY_EXIT (index < expected_length);

      TEST_COMPARE_BLOB (expected[index], strlen (expected[index]),

                         split.segment, split.length);

      ++index;

    }

  TEST_COMPARE (index, expected_length);

  /* Reuse the test cases with masking that does not actually remove

     anything.  */

  check_split_masked (input, -1, NULL, expected, expected_length);

  check_split_masked (input, -1, input, expected, expected_length);

}

static int

do_test (void)

{

  /* Splitting tests, without masking.  */

  check_split (NULL, NULL, 0);

  check_split ("", NULL, 0);

  check_split (":", NULL, 0);

  check_split ("::", NULL, 0);

  {

    const char *expected[] = { "first" };

    check_split ("first", expected, array_length (expected));

    check_split (":first", expected, array_length (expected));

    check_split ("first:", expected, array_length (expected));

    check_split (":first:", expected, array_length (expected));

  }

  {

    const char *expected[] = { "first", "second" };

    check_split ("first:second", expected, array_length (expected));

    check_split ("first::second", expected, array_length (expected));

    check_split (":first:second", expected, array_length (expected));

    check_split ("first:second:", expected, array_length (expected));

    check_split (":first:second:", expected, array_length (expected));

  }

  /* Splitting tests with masking.  */

  {

    const char *expected[] = { "first" };

    check_split_masked ("first", 3, "first:second",

                        expected, array_length (expected));

    check_split_masked ("first:second", 3, "first:",

                        expected, array_length (expected));

    check_split_masked ("first:second", 1, NULL,

                        expected, array_length (expected));

  }

  {

    const char *expected[] = { "second" };

    check_split_masked ("first:second", 3, "second",

                        expected, array_length (expected));

    check_split_masked ("first:second:third", -1, "second:",

                        expected, array_length (expected));

    check_split_masked ("first:second", 2, NULL,

                        expected, array_length (expected));

    check_split_masked ("first:second:third", 2, "first:second",

                        expected, array_length (expected));

  }

  /* Tests for _dl_hwcaps_contains.  */

  TEST_VERIFY (_dl_hwcaps_contains (NULL, "first", strlen ("first")));

  TEST_VERIFY (_dl_hwcaps_contains (NULL, "", 0));

  TEST_VERIFY (! _dl_hwcaps_contains ("", "first", strlen ("first")));

  TEST_VERIFY (! _dl_hwcaps_contains ("firs", "first", strlen ("first")));

  TEST_VERIFY (_dl_hwcaps_contains ("firs", "first", strlen ("first") - 1));

  for (int i = 0; i < strlen ("first"); ++i)

    TEST_VERIFY (! _dl_hwcaps_contains ("first", "first", i));

  TEST_VERIFY (_dl_hwcaps_contains ("first", "first", strlen ("first")));

  TEST_VERIFY (_dl_hwcaps_contains ("first:", "first", strlen ("first")));

  TEST_VERIFY (_dl_hwcaps_contains ("first:second",

                                    "first", strlen ("first")));

  TEST_VERIFY (_dl_hwcaps_contains (":first:second", "first",

                                    strlen ("first")));

  TEST_VERIFY (_dl_hwcaps_contains ("first:second", "second",

                                    strlen ("second")));

  TEST_VERIFY (_dl_hwcaps_contains ("first:second:", "second",

                                    strlen ("second")));

  TEST_VERIFY (_dl_hwcaps_contains ("first::second:", "second",

                                    strlen ("second")));

  TEST_VERIFY (_dl_hwcaps_contains ("first:second::", "second",

                                    strlen ("second")));

  for (int i = 0; i < strlen ("second"); ++i)

    {

      TEST_VERIFY (!_dl_hwcaps_contains ("first:second", "second", i));

      TEST_VERIFY (!_dl_hwcaps_contains ("first:second:", "second", i));

      TEST_VERIFY (!_dl_hwcaps_contains ("first:second::", "second", i));

      TEST_VERIFY (!_dl_hwcaps_contains ("first::second", "second", i));

    }

  return 0;

}

#include <support/test-driver.c>

/* Rebuild the sources here because the object file is built for

   inclusion into the dynamic loader.  */

#include "dl-hwcaps_split.c"