/*
* Copyright 2016-2017 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
*
* 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.springframework.data.mongodb.core.aggregation;
import static org.hamcrest.core.Is.*;
import static org.junit.Assert.*;
import static org.springframework.data.mongodb.test.util.IsBsonObject.*;
import org.bson.Document;
import org.junit.Test;
import org.springframework.data.mongodb.core.Person;
import org.springframework.data.mongodb.core.query.Criteria;
import com.mongodb.BasicDBObject;
import com.mongodb.DBObject;
import com.mongodb.util.JSON;
/**
* Unit tests for {@link GraphLookupOperation}.
*
* @author Mark Paluch
* @author Christoph Strobl
*/
public class GraphLookupOperationUnitTests {
@Test(expected = IllegalArgumentException.class) // DATAMONGO-1551
public void rejectsNullFromCollection() {
GraphLookupOperation.builder().from(null);
}
@Test // DATAMONGO-1551
public void shouldRenderCorrectly() {
GraphLookupOperation graphLookupOperation = GraphLookupOperation.builder() //
.from("employees") //
.startWith("reportsTo") //
.connectFrom("reportsTo") //
.connectTo("name") //
.depthField("depth") //
.maxDepth(42) //
.as("reportingHierarchy");
Document document = graphLookupOperation.toDocument(Aggregation.DEFAULT_CONTEXT);
assertThat(document,
isBsonObject().containing("$graphLookup.depthField", "depth").containing("$graphLookup.maxDepth", 42L));
}
@Test // DATAMONGO-1551
public void shouldRenderCriteriaCorrectly() {
GraphLookupOperation graphLookupOperation = GraphLookupOperation.builder() //
.from("employees") //
.startWith("reportsTo") //
.connectFrom("reportsTo") //
.connectTo("name") //
.restrict(Criteria.where("key").is("value")) //
.as("reportingHierarchy");
Document document = graphLookupOperation.toDocument(Aggregation.DEFAULT_CONTEXT);
assertThat(document,
isBsonObject().containing("$graphLookup.restrictSearchWithMatch", new Document("key", "value")));
}
@Test // DATAMONGO-1551
public void shouldRenderArrayOfStartsWithCorrectly() {
GraphLookupOperation graphLookupOperation = GraphLookupOperation.builder() //
.from("employees") //
.startWith("reportsTo", "boss") //
.connectFrom("reportsTo") //
.connectTo("name") //
.as("reportingHierarchy");
Document document = graphLookupOperation.toDocument(Aggregation.DEFAULT_CONTEXT);
assertThat(document,
is(Document.parse("{ $graphLookup : { from: \"employees\", startWith: [\"$reportsTo\", \"$boss\"], "
+ "connectFromField: \"reportsTo\", connectToField: \"name\", as: \"reportingHierarchy\" } }")));
}
@Test // DATAMONGO-1551
public void shouldRenderMixedArrayOfStartsWithCorrectly() {
GraphLookupOperation graphLookupOperation = GraphLookupOperation.builder() //
.from("employees") //
.startWith("reportsTo", LiteralOperators.Literal.asLiteral("$boss")) //
.connectFrom("reportsTo") //
.connectTo("name") //
.as("reportingHierarchy");
Document document = graphLookupOperation.toDocument(Aggregation.DEFAULT_CONTEXT);
assertThat(document,
is(Document.parse("{ $graphLookup : { from: \"employees\", startWith: [\"$reportsTo\", { $literal: \"$boss\"}], "
+ "connectFromField: \"reportsTo\", connectToField: \"name\", as: \"reportingHierarchy\" } }")));
}
@Test(expected = IllegalArgumentException.class) // DATAMONGO-1551
public void shouldRejectUnknownTypeInMixedArrayOfStartsWithCorrectly() {
GraphLookupOperation graphLookupOperation = GraphLookupOperation.builder() //
.from("employees") //
.startWith("reportsTo", new Person()) //
.connectFrom("reportsTo") //
.connectTo("name") //
.as("reportingHierarchy");
}
@Test // DATAMONGO-1551
public void shouldRenderStartWithAggregationExpressions() {
GraphLookupOperation graphLookupOperation = GraphLookupOperation.builder() //
.from("employees") //
.startWith(LiteralOperators.Literal.asLiteral("hello")) //
.connectFrom("reportsTo") //
.connectTo("name") //
.as("reportingHierarchy");
Document document = graphLookupOperation.toDocument(Aggregation.DEFAULT_CONTEXT);
assertThat(document, is(Document.parse("{ $graphLookup : { from: \"employees\", startWith: { $literal: \"hello\"}, "
+ "connectFromField: \"reportsTo\", connectToField: \"name\", as: \"reportingHierarchy\" } }")));
}
}