thin-provisioning-tools/unit-tests/space_map_t.cc

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// Copyright (C) 2011 Red Hat, Inc. All rights reserved.
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//
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// This file is part of the thin-provisioning-tools source.
//
// thin-provisioning-tools 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.
//
// thin-provisioning-tools 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 thin-provisioning-tools. If not, see
// <http://www.gnu.org/licenses/>.
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#include "space_map.h"
#include "core_map.h"
#define BOOST_TEST_MODULE SpaceMapTests
#include <boost/test/included/unit_test.hpp>
using namespace std;
using namespace boost;
unsigned const NR_BLOCKS = 1024;
//----------------------------------------------------------------
BOOST_AUTO_TEST_CASE(test_get_nr_blocks)
{
core_map sm(NR_BLOCKS);
BOOST_CHECK_EQUAL(sm.get_nr_blocks(), NR_BLOCKS);
}
BOOST_AUTO_TEST_CASE(test_get_nr_free)
{
core_map sm(NR_BLOCKS);
BOOST_CHECK_EQUAL(sm.get_nr_free(), NR_BLOCKS);
for (unsigned i = 0; i < NR_BLOCKS; i++) {
sm.new_block();
BOOST_CHECK_EQUAL(sm.get_nr_free(), NR_BLOCKS - i - 1);
}
for (unsigned i = 0; i < NR_BLOCKS; i++) {
sm.dec(i);
BOOST_CHECK_EQUAL(sm.get_nr_free(), i + 1);
}
}
BOOST_AUTO_TEST_CASE(test_throws_no_space)
{
core_map sm(NR_BLOCKS);
for (unsigned i = 0; i < NR_BLOCKS; i++)
sm.new_block();
BOOST_CHECK_THROW(sm.new_block(), std::runtime_error);
}
BOOST_AUTO_TEST_CASE(test_inc_and_dec)
{
core_map sm(NR_BLOCKS);
block_address b = 63;
for (unsigned i = 0; i < 50; i++) {
BOOST_CHECK_EQUAL(sm.get_count(b), i);
sm.inc(b);
}
for (unsigned i = 50; i > 0; i--) {
BOOST_CHECK_EQUAL(sm.get_count(b), i);
sm.dec(b);
}
}
BOOST_AUTO_TEST_CASE(test_not_allocated_twice)
{
core_map sm(NR_BLOCKS);
block_address b = sm.new_block();
try {
for (;;)
BOOST_CHECK(sm.new_block() != b);
} catch (...) {
}
}
BOOST_AUTO_TEST_CASE(test_set_count)
{
core_map sm(NR_BLOCKS);
sm.set_count(43, 5);
BOOST_CHECK_EQUAL(sm.get_count(43), 5);
}