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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.geocentroid;
import org.apache.lucene.geo.GeoEncodingUtils;
import org.elasticsearch.common.geo.GeoPoint;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.search.aggregations.InternalAggregationTestCase;
import org.elasticsearch.search.aggregations.ParsedAggregation;
import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
import org.elasticsearch.test.geo.RandomGeoGenerator;
import java.util.Collections;
import java.util.List;
import java.util.Map;
public class InternalGeoCentroidTests extends InternalAggregationTestCase<InternalGeoCentroid> {
@Override
protected InternalGeoCentroid createTestInstance(String name, List<PipelineAggregator> pipelineAggregators,
Map<String, Object> metaData) {
GeoPoint centroid = RandomGeoGenerator.randomPoint(random());
// Re-encode lat/longs to avoid rounding issue when testing InternalGeoCentroid#hashCode() and
// InternalGeoCentroid#equals()
int encodedLon = GeoEncodingUtils.encodeLongitude(centroid.lon());
centroid.resetLon(GeoEncodingUtils.decodeLongitude(encodedLon));
int encodedLat = GeoEncodingUtils.encodeLatitude(centroid.lat());
centroid.resetLat(GeoEncodingUtils.decodeLatitude(encodedLat));
long count = randomIntBetween(0, 1000);
if (count == 0) {
centroid = null;
}
return new InternalGeoCentroid("_name", centroid, count, Collections.emptyList(), Collections.emptyMap());
}
@Override
protected Writeable.Reader<InternalGeoCentroid> instanceReader() {
return InternalGeoCentroid::new;
}
@Override
protected void assertReduced(InternalGeoCentroid reduced, List<InternalGeoCentroid> inputs) {
double lonSum = 0;
double latSum = 0;
int totalCount = 0;
for (InternalGeoCentroid input : inputs) {
if (input.count() > 0) {
lonSum += (input.count() * input.centroid().getLon());
latSum += (input.count() * input.centroid().getLat());
}
totalCount += input.count();
}
assertEquals(latSum/totalCount, reduced.centroid().getLat(), 1E-5D);
assertEquals(lonSum/totalCount, reduced.centroid().getLon(), 1E-5D);
assertEquals(totalCount, reduced.count());
}
@Override
protected void assertFromXContent(InternalGeoCentroid aggregation, ParsedAggregation parsedAggregation) {
assertTrue(parsedAggregation instanceof ParsedGeoCentroid);
ParsedGeoCentroid parsed = (ParsedGeoCentroid) parsedAggregation;
assertEquals(aggregation.centroid(), parsed.centroid());
assertEquals(aggregation.count(), parsed.count());
}
}
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