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/*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* BackoffTest.cpp
* Test fixture for the TCPConnector class
* Copyright (C) 2012 Simon Newton
*/
#include <cppunit/extensions/HelperMacros.h>
#include <stdint.h>
#include <string.h>
#include <iostream>
#include <string>
#include "ola/Callback.h"
#include "ola/Clock.h"
#include "ola/util/Backoff.h"
#include "ola/testing/TestUtils.h"
using ola::BackoffGenerator;
using ola::ExponentialBackoffPolicy;
using ola::LinearBackoffPolicy;
using ola::TimeInterval;
class BackoffTest: public CppUnit::TestFixture {
CPPUNIT_TEST_SUITE(BackoffTest);
CPPUNIT_TEST(testLinearBackoffPolicy);
CPPUNIT_TEST(testExponentialBackoffPolicy);
CPPUNIT_TEST(testBackoffGenerator);
CPPUNIT_TEST_SUITE_END();
public:
void testLinearBackoffPolicy();
void testExponentialBackoffPolicy();
void testBackoffGenerator();
};
CPPUNIT_TEST_SUITE_REGISTRATION(BackoffTest);
/**
* Test the linear backoff policy.
*/
void BackoffTest::testLinearBackoffPolicy() {
// 5 per attempt, up to a max of 30
LinearBackoffPolicy policy(TimeInterval(5, 0), TimeInterval(30, 0));
OLA_ASSERT_EQ(TimeInterval(5, 0), policy.BackOffTime(1));
OLA_ASSERT_EQ(TimeInterval(10, 0), policy.BackOffTime(2));
OLA_ASSERT_EQ(TimeInterval(15, 0), policy.BackOffTime(3));
OLA_ASSERT_EQ(TimeInterval(30, 0), policy.BackOffTime(6));
OLA_ASSERT_EQ(TimeInterval(30, 0), policy.BackOffTime(7));
}
/**
* Test the exponential backoff policy.
*/
void BackoffTest::testExponentialBackoffPolicy() {
// start with 10s, up to 170s.
ExponentialBackoffPolicy policy(TimeInterval(10, 0), TimeInterval(170, 0));
OLA_ASSERT_EQ(TimeInterval(10, 0), policy.BackOffTime(1));
OLA_ASSERT_EQ(TimeInterval(20, 0), policy.BackOffTime(2));
OLA_ASSERT_EQ(TimeInterval(40, 0), policy.BackOffTime(3));
OLA_ASSERT_EQ(TimeInterval(80, 0), policy.BackOffTime(4));
OLA_ASSERT_EQ(TimeInterval(160, 0), policy.BackOffTime(5));
OLA_ASSERT_EQ(TimeInterval(170, 0), policy.BackOffTime(6));
OLA_ASSERT_EQ(TimeInterval(170, 0), policy.BackOffTime(7));
}
/**
* Test the BackoffGenerator
*/
void BackoffTest::testBackoffGenerator() {
BackoffGenerator generator(
new LinearBackoffPolicy(TimeInterval(5, 0), TimeInterval(30, 0)));
OLA_ASSERT_EQ(TimeInterval(5, 0), generator.Next());
OLA_ASSERT_EQ(TimeInterval(10, 0), generator.Next());
OLA_ASSERT_EQ(TimeInterval(15, 0), generator.Next());
OLA_ASSERT_EQ(TimeInterval(20, 0), generator.Next());
OLA_ASSERT_EQ(TimeInterval(25, 0), generator.Next());
OLA_ASSERT_EQ(TimeInterval(30, 0), generator.Next());
generator.Reset();
OLA_ASSERT_EQ(TimeInterval(5, 0), generator.Next());
OLA_ASSERT_EQ(TimeInterval(10, 0), generator.Next());
OLA_ASSERT_EQ(TimeInterval(15, 0), generator.Next());
}
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