/* -*-  mode:c; tab-width:8; c-basic-offset:8; indent-tabs-mode:nil;  -*- */
/* 
   Copyright (C) 2013 Ronnie Sahlberg <ronniesahlberg@gmail.com>
   
   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 2 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 <http://www.gnu.org/licenses/>.
*/

#include <stdio.h>

#include <CUnit/CUnit.h>

#include "iscsi.h"
#include "scsi-lowlevel.h"
#include "iscsi-support.h"
#include "iscsi-test-cu.h"


void
test_unmap_0blocks(void)
{
	int i, ret;
	struct unmap_list list[257];

	CHECK_FOR_DATALOSS;
	CHECK_FOR_THIN_PROVISIONING;
	CHECK_FOR_SBC;

	logging(LOG_VERBOSE, LOG_BLANK_LINE);
	logging(LOG_VERBOSE, "Test UNMAP of 0 blocks at LBA:0-255 as a single descriptor");
	for (i = 0; i < 256; i++) {
		list[0].lba = i;
		list[0].num = 0;
		ret = unmap(sd, 0, list, 1,
			    EXPECT_STATUS_GOOD);
		CU_ASSERT_EQUAL(ret, 0);
	}

	logging(LOG_VERBOSE, "Test UNMAP of 0 blocks at end-of-LUN");
	list[0].lba = num_blocks;
	list[0].num = 0;
	ret = unmap(sd, 0, list, 1,
		    EXPECT_STATUS_GOOD);
	CU_ASSERT_EQUAL(ret, 0);

	logging(LOG_VERBOSE, "Test UNMAP without any descriptors.");
	ret = unmap(sd, 0, list, 0,
		    EXPECT_STATUS_GOOD);
	CU_ASSERT_EQUAL(ret, 0);


	if (inq_bl->max_unmap_bdc <= 1) {
		CU_PASS("[SKIPPING] Test UNMAP of 0 blocks with multiple descriptos not supported");
		return;
	}

	logging(LOG_VERBOSE, "Test UNMAP of 0 blocks at LBA:0-255  with one descriptor per block");
	for (i = 0; i < 256; i++) {
		list[i].lba = i;
		list[i].num = 0;
		ret = unmap(sd, 0, list, i + 1,
			    EXPECT_STATUS_GOOD);
		CU_ASSERT_EQUAL(ret, 0);
	}

	logging(LOG_VERBOSE, "Test UNMAP of 0 blocks at LBA:0-255  with one descriptor per block, possibly \"overlapping\".");
	for (i = 0; i < 256; i++) {
		list[i].lba = i/2;
		list[i].num = 0;
	}
	ret = unmap(sd, 0, list, 256,
		    EXPECT_STATUS_GOOD);
	CU_ASSERT_EQUAL(ret, 0);
}