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/*
* This file is part of PowerDNS or dnsdist.
* Copyright -- PowerDNS.COM B.V. and its contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* In addition, for the avoidance of any doubt, permission is granted to
* link this program with OpenSSL and to (re)distribute the binaries
* produced as the result of such linking.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#define BOOST_TEST_DYN_LINK
#define BOOST_TEST_NO_MAIN
#include <boost/test/unit_test.hpp>
#include "dnsdist-backoff.hh"
BOOST_AUTO_TEST_SUITE(dnsdistbackoff)
BOOST_AUTO_TEST_CASE(test_ExponentialBackOffTimer)
{
const unsigned int maxBackOff = 10 * 60;
const ExponentialBackOffTimer ebot(maxBackOff);
const std::vector<std::pair<size_t, unsigned int>> testVector{
{0U, 1U},
{1U, 2U},
{2U, 4U},
{3U, 8U},
{4U, 16U},
{5U, 32U},
{6U, 64U},
{7U, 128U},
{8U, 256U},
{9U, 512U},
{10U, maxBackOff}};
for (const auto& entry : testVector) {
BOOST_CHECK_EQUAL(ebot.get(entry.first), entry.second);
}
/* the behaviour is identical after 32 but let's go to 1024 to be safe */
for (size_t consecutiveFailures = testVector.size(); consecutiveFailures < 1024; consecutiveFailures++) {
BOOST_CHECK_EQUAL(ebot.get(consecutiveFailures), maxBackOff);
}
}
BOOST_AUTO_TEST_SUITE_END()
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