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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.grouping;
import com.yahoo.component.chain.Chain;
import com.yahoo.search.Query;
import com.yahoo.search.Result;
import com.yahoo.search.Searcher;
import com.yahoo.search.grouping.result.Group;
import com.yahoo.search.grouping.result.GroupList;
import com.yahoo.search.grouping.result.HitList;
import com.yahoo.search.grouping.result.RootGroup;
import com.yahoo.search.grouping.result.StringId;
import com.yahoo.search.query.Sorting;
import com.yahoo.search.result.Hit;
import com.yahoo.search.result.Relevance;
import com.yahoo.search.searchchain.Execution;
import com.yahoo.yolean.Exceptions;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.*;
/**
* @author andreer
*/
public class UniqueGroupingSearcherTestCase {
@Test
void testSkipGroupingBasedDedup() {
Result result = search("?query=foo",
new MockResultProvider(0, false));
assertEquals(0, result.hits().size());
}
@Test
void testSkipGroupingBasedDedupIfMultiLevelSorting() {
Result result = search("?query=foo&unique=fingerprint&sorting=-pubdate%20-[rank]",
new MockResultProvider(0, false));
assertEquals(0, result.hits().size());
}
@Test
void testIllegalSortingSpec() {
try {
search("?query=foo&unique=fingerprint&sorting=-1",
new MockResultProvider(0, true).addGroupList(new GroupList("fingerprint")));
fail("Above statement should throw");
} catch (IllegalArgumentException e) {
// As expected.
assertTrue(Exceptions.toMessageString(e).contains("Could not set 'ranking.sorting' to '-1': " +
"Illegal attribute name '1' for sorting. " +
"Requires '[\\[]*[a-zA-Z_][\\.a-zA-Z0-9_-]*[\\]]*'"));
}
}
@Test
void testGroupingBasedDedupNoGroupingHits() {
Result result = search("?query=foo&unique=fingerprint",
new MockResultProvider(0, true));
assertEquals(0, result.hits().size());
}
@Test
void testGroupingBasedDedupWithEmptyGroupingHitsList() {
Result result = search("?query=foo&unique=fingerprint",
new MockResultProvider(0, true).addGroupList(new GroupList("fingerprint")));
assertEquals(0, result.hits().size());
assertEquals(0, result.getTotalHitCount());
}
@Test
void testGroupingBasedDedupWithNullGroupingResult() {
try {
search("?query=foo&unique=fingerprint",
new MockResultProvider(0, false));
fail();
} catch (IllegalStateException e) {
assertEquals("Failed to produce deduped result set.", e.getMessage());
}
}
@Test
void testGroupingBasedDedupWithGroupingHits() {
GroupList fingerprint = new GroupList("fingerprint");
fingerprint.add(makeHitGroup("1"));
fingerprint.add(makeHitGroup("2"));
fingerprint.add(makeHitGroup("3"));
fingerprint.add(makeHitGroup("4"));
fingerprint.add(makeHitGroup("5"));
fingerprint.add(makeHitGroup("6"));
fingerprint.add(makeHitGroup("7"));
MockResultProvider mockResultProvider = new MockResultProvider(15, true);
mockResultProvider.addGroupList(fingerprint);
mockResultProvider.resultGroup.setField(UniqueGroupingSearcher.LABEL_COUNT, 42l);
Result result = search("?query=foo&unique=fingerprint&hits=5&offset=1", mockResultProvider);
assertEquals(5, result.hits().size());
assertEquals("2", result.hits().get(0).getId().toString());
assertEquals("3", result.hits().get(1).getId().toString());
assertEquals("4", result.hits().get(2).getId().toString());
assertEquals("5", result.hits().get(3).getId().toString());
assertEquals("6", result.hits().get(4).getId().toString());
assertEquals(42, result.getTotalHitCount());
}
@Test
void testGroupingBasedDedupWithGroupingHitsAndSorting() {
GroupList fingerprint = new GroupList("fingerprint");
fingerprint.add(makeSortingHitGroup("1"));
fingerprint.add(makeSortingHitGroup("2"));
fingerprint.add(makeSortingHitGroup("3"));
fingerprint.add(makeSortingHitGroup("4"));
fingerprint.add(makeSortingHitGroup("5"));
fingerprint.add(makeSortingHitGroup("6"));
fingerprint.add(makeSortingHitGroup("7"));
MockResultProvider mockResultProvider = new MockResultProvider(100, true);
mockResultProvider.addGroupList(fingerprint);
mockResultProvider.resultGroup.setField(UniqueGroupingSearcher.LABEL_COUNT, 1337l);
Result result = search("?query=foo&unique=fingerprint&hits=5&offset=1&sorting=-expdate", mockResultProvider);
assertEquals(5, result.hits().size());
assertEquals("2", result.hits().get(0).getId().toString());
assertEquals("3", result.hits().get(1).getId().toString());
assertEquals("4", result.hits().get(2).getId().toString());
assertEquals("5", result.hits().get(3).getId().toString());
assertEquals("6", result.hits().get(4).getId().toString());
assertEquals(1337, result.getTotalHitCount());
}
@Test
void testBuildGroupingExpression() {
assertEquals("all(group(title) max(11) output(count() as(uniqueCount)) each(max(1) each(output(summary())) " +
"as(uniqueHits)))",
UniqueGroupingSearcher
.buildGroupingExpression("title", 11, null, null)
.toString());
assertEquals("all(group(fingerprint) max(5) output(count() as(uniqueCount)) each(max(1) " +
"each(output(summary(attributeprefetch))) as(uniqueHits)))",
UniqueGroupingSearcher
.buildGroupingExpression("fingerprint", 5, "attributeprefetch", null)
.toString());
assertEquals("all(group(fingerprint) max(5) order(neg(max(pubdate))) output(count() as(uniqueCount)) each(" +
"all(group(neg(pubdate)) max(1) order(neg(max(pubdate))) each(each(output(summary())) " +
"as(uniqueHits)) as(uniqueGroups))))",
UniqueGroupingSearcher
.buildGroupingExpression("fingerprint", 5, null, new Sorting("-pubdate"))
.toString());
assertEquals("all(group(fingerprint) max(5) order(min(pubdate)) output(count() as(uniqueCount)) each(" +
"all(group(pubdate) max(1) order(min(pubdate)) each(each(output(summary(attributeprefetch))) " +
"as(uniqueHits)) as(uniqueGroups))))",
UniqueGroupingSearcher
.buildGroupingExpression("fingerprint", 5, "attributeprefetch", new Sorting("+pubdate"))
.toString());
}
private static Group makeHitGroup(String name) {
Group ein = new Group(new StringId(name), new Relevance(0));
HitList hits = new HitList(UniqueGroupingSearcher.LABEL_HITS);
hits.add(new Hit(name));
ein.add(hits);
return ein;
}
private static Group makeSortingHitGroup(String name) {
Hit hit = new Hit(name);
HitList hits = new HitList(UniqueGroupingSearcher.LABEL_HITS);
hits.add(hit);
Group dedupGroup = new Group(new StringId(name), new Relevance(0));
dedupGroup.add(hits);
GroupList dedupedHits = new GroupList(UniqueGroupingSearcher.LABEL_GROUPS);
dedupedHits.add(dedupGroup);
Group ein = new Group(new StringId(name), new Relevance(0));
ein.add(dedupedHits);
return ein;
}
private static Result search(String query, MockResultProvider result) {
return new Execution(new Chain<>(new UniqueGroupingSearcher(), result),
Execution.Context.createContextStub()).search(new Query(query));
}
private static class MockResultProvider extends Searcher {
final RootGroup resultGroup;
final long totalHitCount;
final boolean addGroupingData;
MockResultProvider(long totalHitCount, boolean addGroupingData) {
this.addGroupingData = addGroupingData;
this.resultGroup = new RootGroup(0, null);
this.totalHitCount = totalHitCount;
}
MockResultProvider addGroupList(GroupList groupList) {
resultGroup.add(groupList);
return this;
}
@Override
public Result search(Query query, Execution execution) {
Result result = new Result(query);
if (addGroupingData) {
result.hits().add(resultGroup);
result.setTotalHitCount(totalHitCount);
}
return result;
}
}
}
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