Mercurial > gnulib
view tests/test-scratch-buffer.c @ 40163:b89f4c441767
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author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Mon, 28 Jan 2019 01:20:11 +0100 |
parents | b06060465f09 |
children |
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/* Test of scratch_buffer functions. Copyright (C) 2018-2019 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>, 2018. */ #include <config.h> #include <scratch_buffer.h> #include <string.h> #include "macros.h" static int byte_at (size_t i) { return ((i % 13) + ((i * i) % 251)) & 0xff; } int main () { /* Check scratch_buffer_set_array_size. */ { size_t sizes[] = { 100, 1000, 10000, 100000 }; size_t s; for (s = 0; s < SIZEOF (sizes); s++) { size_t size = sizes[s]; struct scratch_buffer buf; bool ok; size_t i; scratch_buffer_init (&buf); ok = scratch_buffer_set_array_size (&buf, size, 1); ASSERT (ok); for (i = 0; i < size; i++) ((unsigned char *) buf.data)[i] = byte_at (i); memset (buf.data, 'x', buf.length); memset (buf.data, 'y', size); scratch_buffer_free (&buf); } } /* Check scratch_buffer_grow. */ { size_t sizes[] = { 100, 1000, 10000, 100000 }; size_t s; for (s = 0; s < SIZEOF (sizes); s++) { size_t size = sizes[s]; struct scratch_buffer buf; bool ok; size_t i; scratch_buffer_init (&buf); while (buf.length < size) { ok = scratch_buffer_grow (&buf); ASSERT (ok); } for (i = 0; i < size; i++) ((unsigned char *) buf.data)[i] = byte_at (i); memset (buf.data, 'x', buf.length); memset (buf.data, 'y', size); scratch_buffer_free (&buf); } } /* Check scratch_buffer_grow_preserve. */ { size_t sizes[] = { 100, 1000, 10000, 100000 }; struct scratch_buffer buf; size_t s; size_t size; bool ok; size_t i; scratch_buffer_init (&buf); s = 0; size = sizes[s]; ok = scratch_buffer_set_array_size (&buf, size, 1); ASSERT (ok); for (i = 0; i < size; i++) ((unsigned char *) buf.data)[i] = byte_at (i); for (; s < SIZEOF (sizes); s++) { size_t oldsize = size; size = sizes[s]; while (buf.length < size) { ok = scratch_buffer_grow_preserve (&buf); ASSERT (ok); } for (i = 0; i < oldsize; i++) ASSERT(((unsigned char *) buf.data)[i] == byte_at (i)); for (i = oldsize; i < size; i++) ((unsigned char *) buf.data)[i] = byte_at (i); } scratch_buffer_free (&buf); } return 0; }