/*
 * Copyright (C) 2011, 2012  Internet Systems Consortium, Inc. ("ISC")
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

/* $Id$ */

/*! \file */

#include <config.h>

#include <atf-c.h>

#include <unistd.h>

#include <isc/task.h>
#include <isc/taskpool.h>

#include "isctest.h"

/*
 * Individual unit tests
 */

/* Create a taskpool */
ATF_TC(create_pool);
ATF_TC_HEAD(create_pool, tc) {
	atf_tc_set_md_var(tc, "descr", "create a taskpool");
}
ATF_TC_BODY(create_pool, tc) {
	isc_result_t result;
	isc_taskpool_t *pool = NULL;

	UNUSED(tc);

	result = isc_test_begin(NULL);
	ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);

	result = isc_taskpool_create(taskmgr, mctx, 8, 2, &pool);
	ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
	ATF_REQUIRE_EQ(isc_taskpool_size(pool), 8);

	isc_taskpool_destroy(&pool);
	ATF_REQUIRE_EQ(pool, NULL);

	isc_test_end();
}

/* Resize a taskpool */
ATF_TC(expand_pool);
ATF_TC_HEAD(expand_pool, tc) {
	atf_tc_set_md_var(tc, "descr", "expand a taskpool");
}
ATF_TC_BODY(expand_pool, tc) {
	isc_result_t result;
	isc_taskpool_t *pool1 = NULL, *pool2 = NULL, *hold = NULL;

	UNUSED(tc);

	result = isc_test_begin(NULL);
	ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);

	result = isc_taskpool_create(taskmgr, mctx, 10, 2, &pool1);
	ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
	ATF_REQUIRE_EQ(isc_taskpool_size(pool1), 10);

	/* resizing to a smaller size should have no effect */
	hold = pool1;
	result = isc_taskpool_expand(&pool1, 5, &pool2);
	ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
	ATF_REQUIRE_EQ(isc_taskpool_size(pool2), 10);
	ATF_REQUIRE_EQ(pool2, hold);
	ATF_REQUIRE_EQ(pool1, NULL);
	pool1 = pool2;
	pool2 = NULL;

	/* resizing to the same size should have no effect */
	hold = pool1;
	result = isc_taskpool_expand(&pool1, 10, &pool2);
	ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
	ATF_REQUIRE_EQ(isc_taskpool_size(pool2), 10);
	ATF_REQUIRE_EQ(pool2, hold);
	ATF_REQUIRE_EQ(pool1, NULL);
	pool1 = pool2;
	pool2 = NULL;

	/* resizing to larger size should make a new pool */
	hold = pool1;
	result = isc_taskpool_expand(&pool1, 20, &pool2);
	ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
	ATF_REQUIRE_EQ(isc_taskpool_size(pool2), 20);
	ATF_REQUIRE(pool2 != hold);
	ATF_REQUIRE_EQ(pool1, NULL);

	isc_taskpool_destroy(&pool2);
	ATF_REQUIRE_EQ(pool2, NULL);

	isc_test_end();
}

/* Get tasks */
ATF_TC(get_tasks);
ATF_TC_HEAD(get_tasks, tc) {
	atf_tc_set_md_var(tc, "descr", "create a taskpool");
}
ATF_TC_BODY(get_tasks, tc) {
	isc_result_t result;
	isc_taskpool_t *pool = NULL;
	isc_task_t *task1 = NULL, *task2 = NULL, *task3 = NULL;

	UNUSED(tc);

	result = isc_test_begin(NULL);
	ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);

	result = isc_taskpool_create(taskmgr, mctx, 2, 2, &pool);
	ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
	ATF_REQUIRE_EQ(isc_taskpool_size(pool), 2);

	/* two tasks in pool; make sure we can access them more than twice */
	isc_taskpool_gettask(pool, &task1);
	ATF_REQUIRE(ISCAPI_TASK_VALID(task1));

	isc_taskpool_gettask(pool, &task2);
	ATF_REQUIRE(ISCAPI_TASK_VALID(task2));

	isc_taskpool_gettask(pool, &task3);
	ATF_REQUIRE(ISCAPI_TASK_VALID(task3));

	isc_task_destroy(&task1);
	isc_task_destroy(&task2);
	isc_task_destroy(&task3);

	isc_taskpool_destroy(&pool);
	ATF_REQUIRE_EQ(pool, NULL);

	isc_test_end();
}

/*
 * Main
 */
ATF_TP_ADD_TCS(tp) {
	ATF_TP_ADD_TC(tp, create_pool);
	ATF_TP_ADD_TC(tp, expand_pool);
	ATF_TP_ADD_TC(tp, get_tasks);

	return (atf_no_error());
}

