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ArrayOperatorsUnitTests.java
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ArrayOperatorsUnitTests.java
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/*
* Copyright 2018-2022 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.springframework.data.mongodb.test.util.Assertions.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.bson.Document;
import org.junit.jupiter.api.Test;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.aggregation.ArrayOperators.ArrayToObject;
/**
* Unit tests for {@link ArrayOperators}
*
* @author Christoph Strobl
* @author Shashank Sharma
* @author Divya Srivastava
* @currentRead Royal Assassin - Robin Hobb
*/
public class ArrayOperatorsUnitTests {
static final List<Object> VALUE_LIST = Arrays.asList(1, "2", new Document("_id", 3));
static final String VALUE_LIST_STRING = "[1, \"2\", { \"_id\" : 3 }]";
static final String EXPRESSION_STRING = "{ \"$stablemaster\" : \"burrich\" }";
static final Document EXPRESSION_DOC = Document.parse(EXPRESSION_STRING);
static final AggregationExpression EXPRESSION = context -> EXPRESSION_DOC;
@Test // DATAMONGO-2052
public void toArrayWithFieldReference() {
assertThat(ArrayOperators.arrayOf("regal").toObject().toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ $arrayToObject: \"$regal\" } ");
}
@Test // DATAMONGO-2052
public void toArrayWithExpression() {
assertThat(ArrayOperators.arrayOf(EXPRESSION).toObject().toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ $arrayToObject: " + EXPRESSION_STRING + "} ");
}
@Test // DATAMONGO-2052
public void toArrayWithArgumentList() {
List<List<String>> source = new ArrayList<>();
source.add(Arrays.asList("king", "shrewd"));
source.add(Arrays.asList("prince", "verity"));
assertThat(ArrayToObject.arrayToObject(source).toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ $arrayToObject: [ [ \"king\", \"shrewd\"], [ \"prince\", \"verity\" ] ] } ");
}
@Test // DATAMONGO-2287
public void arrayElementAtWithValueList() {
assertThat(ArrayOperators.arrayOf(VALUE_LIST).elementAt(1).toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ $arrayElemAt: [ " + VALUE_LIST_STRING + ", 1] } ");
}
@Test // DATAMONGO-2287
public void concatWithValueList() {
assertThat(ArrayOperators.arrayOf(VALUE_LIST).concat("field").toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ $concatArrays: [ " + VALUE_LIST_STRING + ", \"$field\"] } ");
}
@Test // DATAMONGO-2287
public void filterWithValueList() {
assertThat(ArrayOperators.arrayOf(VALUE_LIST).filter().as("var").by(new Document())
.toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ $filter: { \"input\" : " + VALUE_LIST_STRING + ", \"as\" : \"var\", \"cond\" : {} } } ");
}
@Test // DATAMONGO-2287
public void lengthWithValueList() {
assertThat(ArrayOperators.arrayOf(VALUE_LIST).length().toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ $size: [ " + VALUE_LIST_STRING + "] } ");
}
@Test // DATAMONGO-2287
public void sliceWithValueList() {
assertThat(ArrayOperators.arrayOf(VALUE_LIST).slice().itemCount(3).toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ $slice: [ " + VALUE_LIST_STRING + ", 3] } ");
}
@Test // DATAMONGO-2287
public void indexOfWithValueList() {
assertThat(ArrayOperators.arrayOf(VALUE_LIST).indexOf("s1p").toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ $indexOfArray: [ " + VALUE_LIST_STRING + ", \"s1p\"] } ");
}
@Test // DATAMONGO-2287
public void reverseWithValueList() {
assertThat(ArrayOperators.arrayOf(VALUE_LIST).reverse().toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ $reverseArray: [ " + VALUE_LIST_STRING + "] } ");
}
@Test // DATAMONGO-2287
public void zipWithValueList() {
assertThat(ArrayOperators.arrayOf(VALUE_LIST).zipWith("field").toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ $zip: { \"inputs\": [" + VALUE_LIST_STRING + ", \"$field\"]} } ");
}
@Test // DATAMONGO-2287
public void inWithValueList() {
assertThat(ArrayOperators.arrayOf(VALUE_LIST).containsValue("$userName").toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ \"$in\" : [\"$userName\", " + VALUE_LIST_STRING + "] }");
}
@Test // GH-3694
public void firstWithValueList() {
assertThat(ArrayOperators.arrayOf(VALUE_LIST).first().toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ \"$first\" : " + VALUE_LIST_STRING + "}");
}
@Test // GH-3694
public void firstWithExpression() {
assertThat(ArrayOperators.arrayOf(EXPRESSION).first().toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ \"$first\" : " + EXPRESSION_STRING + "}");
}
@Test // GH-3694
public void firstWithFieldReference() {
assertThat(ArrayOperators.arrayOf("field").first().toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ $first : \"$field\" }");
}
@Test // GH-3694
public void lastWithValueList() {
assertThat(ArrayOperators.arrayOf(VALUE_LIST).last().toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ \"$last\" : " + VALUE_LIST_STRING + "}");
}
@Test // GH-3694
public void lastWithExpression() {
assertThat(ArrayOperators.arrayOf(EXPRESSION).last().toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ \"$last\" : " + EXPRESSION_STRING + "}");
}
@Test // GH-3694
public void lastWithFieldReference() {
assertThat(ArrayOperators.arrayOf("field").last().toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ $last : \"$field\" }");
}
@Test // GH-4139
void sortByWithFieldRef() {
assertThat(ArrayOperators.arrayOf("team").sort(Sort.by("name")).toDocument(Aggregation.DEFAULT_CONTEXT))
.isEqualTo("{ $sortArray: { input: \"$team\", sortBy: { name: 1 } } }");
}
}