130 lines
3.1 KiB
C
130 lines
3.1 KiB
C
/* Test of scratch_buffer functions.
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Copyright (C) 2018-2025 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>, 2018. */
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#include <config.h>
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#include <scratch_buffer.h>
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#include <string.h>
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#include "macros.h"
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static int
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byte_at (unsigned long long int i)
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{
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return ((i % 13) + ((i * i) % 251)) & 0xff;
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}
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int
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main ()
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{
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/* Check scratch_buffer_set_array_size. */
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{
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size_t sizes[] = { 100, 1000, 10000, 100000 };
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size_t s;
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for (s = 0; s < SIZEOF (sizes); s++)
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{
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size_t size = sizes[s];
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struct scratch_buffer buf;
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bool ok;
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size_t i;
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scratch_buffer_init (&buf);
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ok = scratch_buffer_set_array_size (&buf, size, 1);
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ASSERT (ok);
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for (i = 0; i < size; i++)
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((unsigned char *) buf.data)[i] = byte_at (i);
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memset (buf.data, 'x', buf.length);
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memset (buf.data, 'y', size);
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scratch_buffer_free (&buf);
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}
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}
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/* Check scratch_buffer_grow. */
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{
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size_t sizes[] = { 100, 1000, 10000, 100000 };
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size_t s;
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for (s = 0; s < SIZEOF (sizes); s++)
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{
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size_t size = sizes[s];
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struct scratch_buffer buf;
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bool ok;
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size_t i;
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scratch_buffer_init (&buf);
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while (buf.length < size)
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{
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ok = scratch_buffer_grow (&buf);
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ASSERT (ok);
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}
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for (i = 0; i < size; i++)
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((unsigned char *) buf.data)[i] = byte_at (i);
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memset (buf.data, 'x', buf.length);
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memset (buf.data, 'y', size);
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scratch_buffer_free (&buf);
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}
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}
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/* Check scratch_buffer_grow_preserve. */
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{
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size_t sizes[] = { 100, 1000, 10000, 100000 };
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struct scratch_buffer buf;
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size_t s;
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size_t size;
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bool ok;
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size_t i;
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scratch_buffer_init (&buf);
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s = 0;
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size = sizes[s];
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ok = scratch_buffer_set_array_size (&buf, size, 1);
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ASSERT (ok);
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for (i = 0; i < size; i++)
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((unsigned char *) buf.data)[i] = byte_at (i);
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for (; s < SIZEOF (sizes); s++)
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{
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size_t oldsize = size;
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size = sizes[s];
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while (buf.length < size)
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{
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ok = scratch_buffer_grow_preserve (&buf);
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ASSERT (ok);
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}
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for (i = 0; i < oldsize; i++)
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ASSERT(((unsigned char *) buf.data)[i] == byte_at (i));
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for (i = oldsize; i < size; i++)
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((unsigned char *) buf.data)[i] = byte_at (i);
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}
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scratch_buffer_free (&buf);
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}
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return test_exit_status;
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}
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