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158 lines
4.2 KiB
C
158 lines
4.2 KiB
C
/*
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Copyright (C) 2015-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <array_length.h>
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#include <scratch_buffer.h>
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#include <support/check.h>
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#include <support/support.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <string.h>
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static bool
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unchanged_array_size (struct scratch_buffer *buf, size_t a, size_t b)
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{
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size_t old_length = buf->length;
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if (!scratch_buffer_set_array_size (buf, a, b))
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{
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printf ("scratch_buffer_set_array_size failed: %zu %zu\n",
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a, b);
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return false;
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}
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if (old_length != buf->length)
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{
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printf ("scratch_buffer_set_array_size did not preserve size: %zu %zu\n",
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a, b);
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return false;
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}
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return true;
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}
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static bool
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array_size_must_fail (size_t a, size_t b)
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{
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for (int pass = 0; pass < 2; ++pass)
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{
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struct scratch_buffer buf;
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scratch_buffer_init (&buf);
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if (pass > 0)
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if (!scratch_buffer_grow (&buf))
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{
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printf ("scratch_buffer_grow in array_size_must_fail failed\n");
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return false;
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}
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if (scratch_buffer_set_array_size (&buf, a, b))
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{
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printf ("scratch_buffer_set_array_size passed: %d %zu %zu\n",
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pass, a, b);
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return false;
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}
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if (buf.data != buf.__space.__c)
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{
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printf ("scratch_buffer_set_array_size did not free: %d %zu %zu\n",
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pass, a, b);
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return false;
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}
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}
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return true;
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}
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static int
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do_test (void)
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{
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{
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struct scratch_buffer buf;
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scratch_buffer_init (&buf);
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memset (buf.data, ' ', buf.length);
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scratch_buffer_free (&buf);
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}
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{
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struct scratch_buffer buf;
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scratch_buffer_init (&buf);
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memset (buf.data, ' ', buf.length);
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size_t old_length = buf.length;
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scratch_buffer_grow (&buf);
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if (buf.length <= old_length)
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{
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printf ("scratch_buffer_grow did not enlarge buffer\n");
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return 1;
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}
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memset (buf.data, ' ', buf.length);
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scratch_buffer_free (&buf);
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}
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{
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struct scratch_buffer buf;
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scratch_buffer_init (&buf);
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memset (buf.data, '@', buf.length);
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strcpy (buf.data, "prefix");
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size_t old_length = buf.length;
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scratch_buffer_grow_preserve (&buf);
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if (buf.length <= old_length)
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{
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printf ("scratch_buffer_grow_preserve did not enlarge buffer\n");
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return 1;
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}
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if (strcmp (buf.data, "prefix") != 0)
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{
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printf ("scratch_buffer_grow_preserve did not copy buffer\n");
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return 1;
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}
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for (unsigned i = 7; i < old_length; ++i)
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if (((char *)buf.data)[i] != '@')
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{
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printf ("scratch_buffer_grow_preserve did not copy buffer (%u)\n",
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i);
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return 1;
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}
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scratch_buffer_free (&buf);
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}
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{
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struct scratch_buffer buf;
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scratch_buffer_init (&buf);
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for (int pass = 0; pass < 4; ++pass)
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{
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if (!(unchanged_array_size (&buf, 0, 0)
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&& unchanged_array_size (&buf, 1, 0)
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&& unchanged_array_size (&buf, 0, 1)
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&& unchanged_array_size (&buf, -1, 0)
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&& unchanged_array_size (&buf, 0, -1)
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&& unchanged_array_size (&buf, 1ULL << 16, 0)
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&& unchanged_array_size (&buf, 0, 1ULL << 16)
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&& unchanged_array_size (&buf, (size_t) (1ULL << 32), 0)
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&& unchanged_array_size (&buf, 0, (size_t) (1ULL << 32))))
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return 1;
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if (!scratch_buffer_grow (&buf))
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{
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printf ("scratch_buffer_grow_failed (pass %d)\n", pass);
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}
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}
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scratch_buffer_free (&buf);
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}
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{
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if (!(array_size_must_fail (-1, 1)
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&& array_size_must_fail (-1, -1)
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&& array_size_must_fail (1, -1)
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&& array_size_must_fail (((size_t)-1) / 4, 4)
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&& array_size_must_fail (4, ((size_t)-1) / 4)))
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return 1;
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}
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return 0;
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}
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#include <support/test-driver.c>
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