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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
*
* TokenBucketTest.cpp
* Test fixture for the TokenBucket class
* Copyright (C) 2010 Simon Newton
*/
#include <cppunit/extensions/HelperMacros.h>
#include "ola/Clock.h"
#include "olad/TokenBucket.h"
#include "ola/Logging.h"
#include "ola/testing/TestUtils.h"
using ola::Clock;
using ola::TimeInterval;
using ola::TimeStamp;
using ola::TokenBucket;
class TokenBucketTest: public CppUnit::TestFixture {
CPPUNIT_TEST_SUITE(TokenBucketTest);
CPPUNIT_TEST(testTokenBucket);
CPPUNIT_TEST(testTokenBucketTwo);
CPPUNIT_TEST_SUITE_END();
public:
void testTokenBucket();
void testTokenBucketTwo();
};
CPPUNIT_TEST_SUITE_REGISTRATION(TokenBucketTest);
/*
* Check that the Token Bucket works
*/
void TokenBucketTest::testTokenBucket() {
TimeStamp now;
Clock clock;
TimeInterval ten_ms(10000);
TimeInterval one_hundred_ms(100000);
TimeInterval one_second(1000000);
clock.CurrentMonotonicTime(&now);
TokenBucket bucket(0, 10, 10, now); // one every 100ms
OLA_ASSERT_EQ(0u, bucket.Count(now));
now += one_hundred_ms;
OLA_ASSERT_EQ(1u, bucket.Count(now));
now += ten_ms;
OLA_ASSERT_EQ(1u, bucket.Count(now));
now += ten_ms;
OLA_ASSERT_EQ(1u, bucket.Count(now));
now += one_hundred_ms;
OLA_ASSERT_EQ(2u, bucket.Count(now));
OLA_ASSERT_TRUE(bucket.GetToken(now));
OLA_ASSERT_TRUE(bucket.GetToken(now));
OLA_ASSERT_FALSE(bucket.GetToken(now));
OLA_ASSERT_EQ(0u, bucket.Count(now));
now += one_second;
OLA_ASSERT_EQ(10u, bucket.Count(now));
}
void TokenBucketTest::testTokenBucketTwo() {
TimeStamp now;
Clock clock;
TimeInterval ten_ms(10000);
TimeInterval one_hundred_ms(100000);
TimeInterval one_second(1000000);
TimeInterval five_minutes(5 * 60 * 1000000);
clock.CurrentMonotonicTime(&now);
TokenBucket bucket(0, 40, 40, now); // one every 25ms
OLA_ASSERT_EQ(0u, bucket.Count(now));
now += one_hundred_ms;
OLA_ASSERT_EQ(4u, bucket.Count(now));
now += ten_ms;
OLA_ASSERT_EQ(4u, bucket.Count(now));
now += ten_ms;
OLA_ASSERT_EQ(4u, bucket.Count(now));
now += ten_ms;
OLA_ASSERT_EQ(5u, bucket.Count(now));
now += ten_ms;
OLA_ASSERT_EQ(5u, bucket.Count(now));
now += one_hundred_ms;
OLA_ASSERT_EQ(9u, bucket.Count(now));
now += ten_ms;
OLA_ASSERT_EQ(10u, bucket.Count(now));
now += one_second;
OLA_ASSERT_EQ(40u, bucket.Count(now));
// now try a very long duration
now += five_minutes;
OLA_ASSERT_EQ(40u, bucket.Count(now));
// take 10 tokens from the bucket
for (unsigned int i = 0; i < 10; i++) {
OLA_ASSERT_TRUE(bucket.GetToken(now));
}
OLA_ASSERT_EQ(30u, bucket.Count(now));
// add a bit of time
now += ten_ms;
OLA_ASSERT_EQ(30u, bucket.Count(now));
}
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