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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;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.search.DocValueFormat;
import org.elasticsearch.search.aggregations.ParsedAggregation;
import org.elasticsearch.search.aggregations.metrics.stats.extended.ExtendedStats.Bounds;
import org.elasticsearch.search.aggregations.metrics.stats.extended.InternalExtendedStats;
import org.elasticsearch.search.aggregations.metrics.stats.extended.ParsedExtendedStats;
import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
import org.elasticsearch.test.InternalAggregationTestCase;
import org.junit.Before;
import java.util.List;
import java.util.Map;
public class InternalExtendedStatsTests extends InternalAggregationTestCase<InternalExtendedStats> {
protected double sigma;
@Before
public void randomSigma() {
this.sigma = randomDoubleBetween(0, 10, true);
}
@Override
protected InternalExtendedStats createTestInstance(String name, List<PipelineAggregator> pipelineAggregators,
Map<String, Object> metaData) {
long count = frequently() ? randomIntBetween(1, Integer.MAX_VALUE) : 0;
double min = randomDoubleBetween(-1000000, 1000000, true);
double max = randomDoubleBetween(-1000000, 1000000, true);
double sum = randomDoubleBetween(-1000000, 1000000, true);
DocValueFormat format = randomNumericDocValueFormat();
return createInstance(name, count, sum, min, max, randomDoubleBetween(0, 1000000, true),
sigma, format, pipelineAggregators, metaData);
}
protected InternalExtendedStats createInstance(String name, long count, double sum, double min, double max, double sumOfSqrs,
double sigma, DocValueFormat formatter, List<PipelineAggregator> pipelineAggregators, Map<String, Object> metaData) {
return new InternalExtendedStats(name, count, sum, min, max, sumOfSqrs, sigma, formatter, pipelineAggregators, metaData);
}
@Override
protected void assertReduced(InternalExtendedStats reduced, List<InternalExtendedStats> inputs) {
long expectedCount = 0;
double expectedSum = 0;
double expectedSumOfSquare = 0;
double expectedMin = Double.POSITIVE_INFINITY;
double expectedMax = Double.NEGATIVE_INFINITY;
for (InternalExtendedStats stats : inputs) {
assertEquals(sigma, stats.getSigma(), 0);
expectedCount += stats.getCount();
if (Double.compare(stats.getMin(), expectedMin) < 0) {
expectedMin = stats.getMin();
}
if (Double.compare(stats.getMax(), expectedMax) > 0) {
expectedMax = stats.getMax();
}
expectedSum += stats.getSum();
expectedSumOfSquare += stats.getSumOfSquares();
}
assertEquals(sigma, reduced.getSigma(), 0);
assertEquals(expectedCount, reduced.getCount());
assertEquals(expectedSum, reduced.getSum(), 1e-07);
assertEquals(expectedMin, reduced.getMin(), 0d);
assertEquals(expectedMax, reduced.getMax(), 0d);
assertEquals(expectedSumOfSquare, reduced.getSumOfSquares(), 1e-07);
}
@Override
protected void assertFromXContent(InternalExtendedStats aggregation, ParsedAggregation parsedAggregation) {
assertTrue(parsedAggregation instanceof ParsedExtendedStats);
ParsedExtendedStats parsed = (ParsedExtendedStats) parsedAggregation;
InternalStatsTests.assertStats(aggregation, parsed);
long count = aggregation.getCount();
// for count == 0, fields are rendered as `null`, so we test that we parse to default values used also in the reduce phase
assertEquals(count > 0 ? aggregation.getSumOfSquares() : 0 , parsed.getSumOfSquares(), 0);
assertEquals(count > 0 ? aggregation.getVariance() : 0 , parsed.getVariance(), 0);
assertEquals(count > 0 ? aggregation.getStdDeviation() : 0 , parsed.getStdDeviation(), 0);
assertEquals(count > 0 ? aggregation.getStdDeviationBound(Bounds.LOWER) : 0 , parsed.getStdDeviationBound(Bounds.LOWER), 0);
assertEquals(count > 0 ? aggregation.getStdDeviationBound(Bounds.UPPER) : 0 , parsed.getStdDeviationBound(Bounds.UPPER), 0);
// also as_string values are only rendered for count != 0
if (count > 0) {
assertEquals(aggregation.getSumOfSquaresAsString(), parsed.getSumOfSquaresAsString());
assertEquals(aggregation.getVarianceAsString(), parsed.getVarianceAsString());
assertEquals(aggregation.getStdDeviationAsString(), parsed.getStdDeviationAsString());
assertEquals(aggregation.getStdDeviationBoundAsString(Bounds.LOWER), parsed.getStdDeviationBoundAsString(Bounds.LOWER));
assertEquals(aggregation.getStdDeviationBoundAsString(Bounds.UPPER), parsed.getStdDeviationBoundAsString(Bounds.UPPER));
}
}
@Override
protected Writeable.Reader<InternalExtendedStats> instanceReader() {
return InternalExtendedStats::new;
}
}
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