/*
* Copyright 2016 KairosDB Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.kairosdb.core.aggregator;
import org.junit.Test;
import org.kairosdb.core.DataPoint;
import org.kairosdb.core.datapoints.DoubleDataPointFactoryImpl;
import org.kairosdb.core.datapoints.LongDataPoint;
import org.kairosdb.core.datastore.DataPointGroup;
import org.kairosdb.testing.ListDataPointGroup;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.junit.Assert.assertThat;
public class RateAggregatorTest
{
@Test(expected = NullPointerException.class)
public void test_nullSet_invalid()
{
new RateAggregator(new DoubleDataPointFactoryImpl()).aggregate(null);
}
@Test
public void test_steadyRate()
{
ListDataPointGroup group = new ListDataPointGroup("rate");
group.addDataPoint(new LongDataPoint(1, 10));
group.addDataPoint(new LongDataPoint(2, 20));
group.addDataPoint(new LongDataPoint(3, 30));
group.addDataPoint(new LongDataPoint(4, 40));
RateAggregator rateAggregator = new RateAggregator(new DoubleDataPointFactoryImpl());
DataPointGroup results = rateAggregator.aggregate(group);
DataPoint dp = results.next();
assertThat(dp.getTimestamp(), equalTo(2L));
assertThat(dp.getDoubleValue(), equalTo(10.0));
dp = results.next();
assertThat(dp.getTimestamp(), equalTo(3L));
assertThat(dp.getDoubleValue(), equalTo(10.0));
dp = results.next();
assertThat(dp.getTimestamp(), equalTo(4L));
assertThat(dp.getDoubleValue(), equalTo(10.0));
}
@Test
public void test_steadyRateOver2Sec()
{
ListDataPointGroup group = new ListDataPointGroup("rate");
group.addDataPoint(new LongDataPoint(1, 10));
group.addDataPoint(new LongDataPoint(3, 20));
group.addDataPoint(new LongDataPoint(5, 30));
group.addDataPoint(new LongDataPoint(7, 40));
RateAggregator rateAggregator = new RateAggregator(new DoubleDataPointFactoryImpl());
DataPointGroup results = rateAggregator.aggregate(group);
DataPoint dp = results.next();
assertThat(dp.getTimestamp(), equalTo(3L));
assertThat(dp.getDoubleValue(), equalTo(5.0));
dp = results.next();
assertThat(dp.getTimestamp(), equalTo(5L));
assertThat(dp.getDoubleValue(), equalTo(5.0));
dp = results.next();
assertThat(dp.getTimestamp(), equalTo(7L));
assertThat(dp.getDoubleValue(), equalTo(5.0));
}
@Test
public void test_changingRate()
{
ListDataPointGroup group = new ListDataPointGroup("rate");
group.addDataPoint(new LongDataPoint(1, 10));
group.addDataPoint(new LongDataPoint(2, 10));
group.addDataPoint(new LongDataPoint(3, 5));
group.addDataPoint(new LongDataPoint(4, 20));
RateAggregator rateAggregator = new RateAggregator(new DoubleDataPointFactoryImpl());
DataPointGroup results = rateAggregator.aggregate(group);
DataPoint dp = results.next();
assertThat(dp.getTimestamp(), equalTo(2L));
assertThat(dp.getDoubleValue(), equalTo(0.0));
dp = results.next();
assertThat(dp.getTimestamp(), equalTo(3L));
assertThat(dp.getDoubleValue(), equalTo(-5.0));
dp = results.next();
assertThat(dp.getTimestamp(), equalTo(4L));
assertThat(dp.getDoubleValue(), equalTo(15.0));
}
@Test(expected = IllegalStateException.class)
public void test_dataPointsAtSameTime()
{
ListDataPointGroup group = new ListDataPointGroup("rate");
group.addDataPoint(new LongDataPoint(1, 10));
group.addDataPoint(new LongDataPoint(1, 15));
group.addDataPoint(new LongDataPoint(2, 5));
group.addDataPoint(new LongDataPoint(2, 20));
group.addDataPoint(new LongDataPoint(3, 30));
RateAggregator rateAggregator = new RateAggregator(new DoubleDataPointFactoryImpl());
DataPointGroup results = rateAggregator.aggregate(group);
DataPoint dp = results.next();
}
}