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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you 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.elasticsearch.search.aggregations.metrics.percentiles.tdigest;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.search.DocValueFormat;
import org.elasticsearch.search.aggregations.InternalAggregationTestCase;
import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
import java.util.List;
import java.util.Map;
public class InternalTDigestPercentilesTests extends InternalAggregationTestCase<InternalTDigestPercentiles> {
private final double[] percents = randomPercents();
@Override
protected InternalTDigestPercentiles createTestInstance(String name,
List<PipelineAggregator> pipelineAggregators,
Map<String, Object> metaData) {
boolean keyed = randomBoolean();
DocValueFormat format = DocValueFormat.RAW;
TDigestState state = new TDigestState(100);
int numValues = randomInt(10);
for (int i = 0; i < numValues; ++i) {
state.add(randomDouble() * 100);
}
assertEquals(state.centroidCount(), numValues);
return new InternalTDigestPercentiles(name, percents, state, keyed, format, pipelineAggregators, metaData);
}
@Override
protected void assertReduced(InternalTDigestPercentiles reduced, List<InternalTDigestPercentiles> inputs) {
final TDigestState expectedState = new TDigestState(reduced.state.compression());
long totalCount = 0;
for (InternalTDigestPercentiles input : inputs) {
assertArrayEquals(reduced.keys, input.keys, 0d);
expectedState.add(input.state);
totalCount += input.state.size();
}
assertEquals(totalCount, reduced.state.size());
if (totalCount > 0) {
assertEquals(expectedState.quantile(0), reduced.state.quantile(0), 0d);
assertEquals(expectedState.quantile(1), reduced.state.quantile(1), 0d);
}
}
@Override
protected Writeable.Reader<InternalTDigestPercentiles> instanceReader() {
return InternalTDigestPercentiles::new;
}
private static double[] randomPercents() {
List<Double> randomCdfValues = randomSubsetOf(randomIntBetween(1, 7), 0.01d, 0.05d, 0.25d, 0.50d, 0.75d, 0.95d, 0.99d);
double[] percents = new double[randomCdfValues.size()];
for (int i = 0; i < randomCdfValues.size(); i++) {
percents[i] = randomCdfValues.get(i);
}
return percents;
}
}
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