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SelectionOperatorUnitTests.java
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SelectionOperatorUnitTests.java
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/*
* Copyright 2022 the original author or authors.
*
* Licensed 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
*
* https://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.springframework.data.mongodb.core.aggregation;
import static org.assertj.core.api.Assertions.*;
import org.bson.Document;
import org.junit.jupiter.api.Test;
import org.springframework.data.domain.Sort;
import org.springframework.data.domain.Sort.Direction;
import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
import org.springframework.data.mongodb.core.convert.NoOpDbRefResolver;
import org.springframework.data.mongodb.core.convert.QueryMapper;
import org.springframework.data.mongodb.core.mapping.Field;
import org.springframework.data.mongodb.core.mapping.MongoMappingContext;
/**
* @author Christoph Strobl
*/
class SelectionOperatorUnitTests {
@Test // GH-4139
void bottomRenderedCorrectly() {
Document document = SelectionOperators.Bottom.bottom().output(Fields.fields("playerId", "score"))
.sortBy(Sort.by(Direction.DESC, "score")).toDocument(Aggregation.DEFAULT_CONTEXT);
assertThat(document).isEqualTo(Document.parse("""
{
$bottom:
{
output: [ "$playerId", "$score" ],
sortBy: { "score": -1 }
}
}
"""));
}
@Test // GH-4139
void bottomMapsFieldNamesCorrectly() {
MongoMappingContext mappingContext = new MongoMappingContext();
RelaxedTypeBasedAggregationOperationContext aggregationContext = new RelaxedTypeBasedAggregationOperationContext(
Player.class, mappingContext,
new QueryMapper(new MappingMongoConverter(NoOpDbRefResolver.INSTANCE, mappingContext)));
Document document = SelectionOperators.Bottom.bottom().output(Fields.fields("playerId", "score"))
.sortBy(Sort.by(Direction.DESC, "score")).toDocument(aggregationContext);
assertThat(document).isEqualTo(Document.parse("""
{
$bottom:
{
output: [ "$player_id", "$s_cor_e" ],
sortBy: { "s_cor_e": -1 }
}
}
"""));
}
static class Player {
@Field("player_id") String playerId;
@Field("s_cor_e") Integer score;
}
}