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Add unit tests for ReverseNestedAggregator
Relates to #22278
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...ava/org/elasticsearch/search/aggregations/bucket/nested/ReverseNestedAggregatorTests.java
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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. | ||
| */ | ||
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| package org.elasticsearch.search.aggregations.bucket.nested; | ||
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| import org.apache.lucene.document.Document; | ||
| import org.apache.lucene.document.Field; | ||
| import org.apache.lucene.document.SortedNumericDocValuesField; | ||
| import org.apache.lucene.index.DirectoryReader; | ||
| import org.apache.lucene.index.IndexReader; | ||
| import org.apache.lucene.index.RandomIndexWriter; | ||
| import org.apache.lucene.search.MatchAllDocsQuery; | ||
| import org.apache.lucene.store.Directory; | ||
| import org.elasticsearch.index.mapper.MappedFieldType; | ||
| import org.elasticsearch.index.mapper.NumberFieldMapper; | ||
| import org.elasticsearch.index.mapper.TypeFieldMapper; | ||
| import org.elasticsearch.index.mapper.UidFieldMapper; | ||
| import org.elasticsearch.search.aggregations.AggregatorTestCase; | ||
| import org.elasticsearch.search.aggregations.metrics.max.InternalMax; | ||
| import org.elasticsearch.search.aggregations.metrics.max.MaxAggregationBuilder; | ||
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| import java.io.IOException; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
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| public class ReverseNestedAggregatorTests extends AggregatorTestCase { | ||
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| private static final String VALUE_FIELD_NAME = "number"; | ||
| private static final String NESTED_OBJECT = "nested_object"; | ||
| private static final String NESTED_AGG = "nestedAgg"; | ||
| private static final String REVERSE_AGG_NAME = "reverseNestedAgg"; | ||
| private static final String MAX_AGG_NAME = "maxAgg"; | ||
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| public void testNoDocs() throws IOException { | ||
| try (Directory directory = newDirectory()) { | ||
| try (RandomIndexWriter iw = new RandomIndexWriter(random(), directory)) { | ||
| // intentionally not writing any docs | ||
| } | ||
| try (IndexReader indexReader = DirectoryReader.open(directory)) { | ||
| NestedAggregationBuilder nestedBuilder = new NestedAggregationBuilder(NESTED_AGG, | ||
| NESTED_OBJECT); | ||
| ReverseNestedAggregationBuilder reverseNestedBuilder | ||
| = new ReverseNestedAggregationBuilder(REVERSE_AGG_NAME); | ||
| nestedBuilder.subAggregation(reverseNestedBuilder); | ||
| MaxAggregationBuilder maxAgg = new MaxAggregationBuilder(MAX_AGG_NAME) | ||
| .field(VALUE_FIELD_NAME); | ||
| reverseNestedBuilder.subAggregation(maxAgg); | ||
| MappedFieldType fieldType = new NumberFieldMapper.NumberFieldType( | ||
| NumberFieldMapper.NumberType.LONG); | ||
| fieldType.setName(VALUE_FIELD_NAME); | ||
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| Nested nested = search(newSearcher(indexReader, true, true), | ||
| new MatchAllDocsQuery(), nestedBuilder, fieldType); | ||
| ReverseNested reverseNested = (ReverseNested) nested.getProperty(REVERSE_AGG_NAME); | ||
| assertEquals(REVERSE_AGG_NAME, reverseNested.getName()); | ||
| assertEquals(0, reverseNested.getDocCount()); | ||
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| InternalMax max = (InternalMax) reverseNested.getProperty(MAX_AGG_NAME); | ||
| assertEquals(MAX_AGG_NAME, max.getName()); | ||
| assertEquals(Double.NEGATIVE_INFINITY, max.getValue(), Double.MIN_VALUE); | ||
| } | ||
| } | ||
| } | ||
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| public void testMaxFromParentDocs() throws IOException { | ||
| int numParentDocs = randomIntBetween(1, 20); | ||
| int expectedParentDocs = 0; | ||
| int expectedNestedDocs = 0; | ||
| double expectedMaxValue = Double.NEGATIVE_INFINITY; | ||
| try (Directory directory = newDirectory()) { | ||
| try (RandomIndexWriter iw = new RandomIndexWriter(random(), directory)) { | ||
| for (int i = 0; i < numParentDocs; i++) { | ||
| List<Document> documents = new ArrayList<>(); | ||
| int numNestedDocs = randomIntBetween(0, 20); | ||
| for (int nested = 0; nested < numNestedDocs; nested++) { | ||
| Document document = new Document(); | ||
| document.add(new Field(UidFieldMapper.NAME, "type#" + i, | ||
| UidFieldMapper.Defaults.NESTED_FIELD_TYPE)); | ||
| document.add(new Field(TypeFieldMapper.NAME, "__" + NESTED_OBJECT, | ||
| TypeFieldMapper.Defaults.FIELD_TYPE)); | ||
| documents.add(document); | ||
| expectedNestedDocs++; | ||
| } | ||
| Document document = new Document(); | ||
| document.add(new Field(UidFieldMapper.NAME, "type#" + i, | ||
| UidFieldMapper.Defaults.FIELD_TYPE)); | ||
| document.add(new Field(TypeFieldMapper.NAME, "test", | ||
| TypeFieldMapper.Defaults.FIELD_TYPE)); | ||
| long value = randomNonNegativeLong() % 10000; | ||
| document.add(new SortedNumericDocValuesField(VALUE_FIELD_NAME, value)); | ||
| if (numNestedDocs > 0) { | ||
| expectedMaxValue = Math.max(expectedMaxValue, value); | ||
| expectedParentDocs++; | ||
| } | ||
| documents.add(document); | ||
| iw.addDocuments(documents); | ||
| } | ||
| iw.commit(); | ||
| } | ||
| try (IndexReader indexReader = DirectoryReader.open(directory)) { | ||
| NestedAggregationBuilder nestedBuilder = new NestedAggregationBuilder(NESTED_AGG, | ||
| NESTED_OBJECT); | ||
| ReverseNestedAggregationBuilder reverseNestedBuilder | ||
| = new ReverseNestedAggregationBuilder(REVERSE_AGG_NAME); | ||
| nestedBuilder.subAggregation(reverseNestedBuilder); | ||
| MaxAggregationBuilder maxAgg = new MaxAggregationBuilder(MAX_AGG_NAME) | ||
| .field(VALUE_FIELD_NAME); | ||
| reverseNestedBuilder.subAggregation(maxAgg); | ||
| MappedFieldType fieldType = new NumberFieldMapper.NumberFieldType( | ||
| NumberFieldMapper.NumberType.LONG); | ||
| fieldType.setName(VALUE_FIELD_NAME); | ||
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| Nested nested = search(newSearcher(indexReader, true, true), | ||
| new MatchAllDocsQuery(), nestedBuilder, fieldType); | ||
| assertEquals(expectedNestedDocs, nested.getDocCount()); | ||
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| ReverseNested reverseNested = (ReverseNested) nested.getProperty(REVERSE_AGG_NAME); | ||
| assertEquals(REVERSE_AGG_NAME, reverseNested.getName()); | ||
| assertEquals(expectedParentDocs, reverseNested.getDocCount()); | ||
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| InternalMax max = (InternalMax) reverseNested.getProperty(MAX_AGG_NAME); | ||
| assertEquals(MAX_AGG_NAME, max.getName()); | ||
| assertEquals(expectedMaxValue, max.getValue(), Double.MIN_VALUE); | ||
| } | ||
| } | ||
| } | ||
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| } |