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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#include <config.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <atf-c.h>
#include "isctest.h"
#include <isc/buffer.h>
#include <isc/result.h>
ATF_TC(isc_buffer_reserve);
ATF_TC_HEAD(isc_buffer_reserve, tc) {
atf_tc_set_md_var(tc, "descr", "reserve space in dynamic buffers");
}
ATF_TC_BODY(isc_buffer_reserve, tc) {
isc_result_t result;
isc_buffer_t *b;
result = isc_test_begin(NULL, true, 0);
ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
b = NULL;
result = isc_buffer_allocate(mctx, &b, 1024);
ATF_CHECK_EQ(result, ISC_R_SUCCESS);
ATF_CHECK_EQ(b->length, 1024);
/*
* 1024 bytes should already be available, so this call does
* nothing.
*/
result = isc_buffer_reserve(&b, 1024);
ATF_CHECK_EQ(result, ISC_R_SUCCESS);
ATF_CHECK(ISC_BUFFER_VALID(b));
ATF_REQUIRE(b != NULL);
ATF_CHECK_EQ(b->length, 1024);
/*
* This call should grow it to 2048 bytes as only 1024 bytes are
* available in the buffer.
*/
result = isc_buffer_reserve(&b, 1025);
ATF_CHECK_EQ(result, ISC_R_SUCCESS);
ATF_CHECK(ISC_BUFFER_VALID(b));
ATF_REQUIRE(b != NULL);
ATF_CHECK_EQ(b->length, 2048);
/*
* 2048 bytes should already be available, so this call does
* nothing.
*/
result = isc_buffer_reserve(&b, 2000);
ATF_CHECK_EQ(result, ISC_R_SUCCESS);
ATF_CHECK(ISC_BUFFER_VALID(b));
ATF_REQUIRE(b != NULL);
ATF_CHECK_EQ(b->length, 2048);
/*
* This call should grow it to 4096 bytes as only 2048 bytes are
* available in the buffer.
*/
result = isc_buffer_reserve(&b, 3000);
ATF_CHECK_EQ(result, ISC_R_SUCCESS);
ATF_CHECK(ISC_BUFFER_VALID(b));
ATF_REQUIRE(b != NULL);
ATF_CHECK_EQ(b->length, 4096);
/* Consume some of the buffer so we can run the next test. */
isc_buffer_add(b, 4096);
/*
* This call should fail and leave buffer untouched.
*/
result = isc_buffer_reserve(&b, UINT_MAX);
ATF_CHECK_EQ(result, ISC_R_NOMEMORY);
ATF_CHECK(ISC_BUFFER_VALID(b));
ATF_REQUIRE(b != NULL);
ATF_CHECK_EQ(b->length, 4096);
isc_buffer_free(&b);
isc_test_end();
}
ATF_TC(isc_buffer_reallocate);
ATF_TC_HEAD(isc_buffer_reallocate, tc) {
atf_tc_set_md_var(tc, "descr", "reallocate dynamic buffers");
}
ATF_TC_BODY(isc_buffer_reallocate, tc) {
isc_result_t result;
isc_buffer_t *b;
result = isc_test_begin(NULL, true, 0);
ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
b = NULL;
result = isc_buffer_allocate(mctx, &b, 1024);
ATF_CHECK_EQ(result, ISC_R_SUCCESS);
ATF_REQUIRE(b != NULL);
ATF_CHECK_EQ(b->length, 1024);
result = isc_buffer_reallocate(&b, 512);
ATF_CHECK_EQ(result, ISC_R_NOSPACE);
ATF_CHECK(ISC_BUFFER_VALID(b));
ATF_REQUIRE(b != NULL);
ATF_CHECK_EQ(b->length, 1024);
result = isc_buffer_reallocate(&b, 1536);
ATF_CHECK_EQ(result, ISC_R_SUCCESS);
ATF_CHECK(ISC_BUFFER_VALID(b));
ATF_REQUIRE(b != NULL);
ATF_CHECK_EQ(b->length, 1536);
isc_buffer_free(&b);
isc_test_end();
}
ATF_TC(isc_buffer_dynamic);
ATF_TC_HEAD(isc_buffer_dynamic, tc) {
atf_tc_set_md_var(tc, "descr", "dynamic buffer automatic reallocation");
}
ATF_TC_BODY(isc_buffer_dynamic, tc) {
isc_result_t result;
isc_buffer_t *b;
size_t last_length = 10;
int i;
result = isc_test_begin(NULL, true, 0);
ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
b = NULL;
result = isc_buffer_allocate(mctx, &b, last_length);
ATF_CHECK_EQ(result, ISC_R_SUCCESS);
ATF_REQUIRE(b != NULL);
ATF_CHECK_EQ(b->length, last_length);
isc_buffer_setautorealloc(b, true);
isc_buffer_putuint8(b, 1);
for (i = 0; i < 1000; i++) {
isc_buffer_putstr(b, "thisisa24charslongstring");
}
ATF_CHECK(b->length-last_length >= 1000*24);
last_length+=1000*24;
for (i = 0; i < 10000; i++) {
isc_buffer_putuint8(b, 1);
}
ATF_CHECK(b->length-last_length >= 10000*1);
last_length += 10000*1;
for (i = 0; i < 10000; i++) {
isc_buffer_putuint16(b, 1);
}
ATF_CHECK(b->length-last_length >= 10000*2);
last_length += 10000*2;
for (i = 0; i < 10000; i++) {
isc_buffer_putuint24(b, 1);
}
ATF_CHECK(b->length-last_length >= 10000*3);
last_length+=10000*3;
for (i = 0; i < 10000; i++) {
isc_buffer_putuint32(b, 1);
}
ATF_CHECK(b->length-last_length >= 10000*4);
isc_buffer_free(&b);
isc_test_end();
}
/*
* Main
*/
ATF_TP_ADD_TCS(tp) {
ATF_TP_ADD_TC(tp, isc_buffer_reserve);
ATF_TP_ADD_TC(tp, isc_buffer_reallocate);
ATF_TP_ADD_TC(tp, isc_buffer_dynamic);
return (atf_no_error());
}
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