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ChangeStreamTaskUnitTests.java
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ChangeStreamTaskUnitTests.java
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/*
* Copyright 2019-2022 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.messaging;
import static org.mockito.Mockito.*;
import java.util.UUID;
import org.bson.BsonDocument;
import org.bson.BsonString;
import org.bson.Document;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
import org.springframework.data.mongodb.core.convert.MongoConverter;
import org.springframework.data.mongodb.core.convert.NoOpDbRefResolver;
import org.springframework.data.mongodb.core.mapping.MongoMappingContext;
import com.mongodb.client.ChangeStreamIterable;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoCursor;
import com.mongodb.client.MongoDatabase;
import com.mongodb.client.model.changestream.ChangeStreamDocument;
/**
* @author Christoph Strobl
* @author Myroslav Kosinskyi
*/
@ExtendWith(MockitoExtension.class)
class ChangeStreamTaskUnitTests {
ChangeStreamTask task;
@Mock MongoTemplate template;
@Mock MongoDatabase mongoDatabase;
@Mock MongoCollection<Document> mongoCollection;
@Mock ChangeStreamIterable<Document> changeStreamIterable;
private MongoConverter converter;
@BeforeEach
void setUp() {
MongoMappingContext mappingContext = new MongoMappingContext();
converter = new MappingMongoConverter(NoOpDbRefResolver.INSTANCE, mappingContext);
when(template.getConverter()).thenReturn(converter);
when(template.getDb()).thenReturn(mongoDatabase);
when(mongoDatabase.getCollection(any())).thenReturn(mongoCollection);
when(mongoCollection.watch(eq(Document.class))).thenReturn(changeStreamIterable);
when(changeStreamIterable.fullDocument(any())).thenReturn(changeStreamIterable);
when(changeStreamIterable.fullDocumentBeforeChange(any())).thenReturn(changeStreamIterable);
}
@Test // DATAMONGO-2258
void shouldNotBreakLovelaceBehavior() {
BsonDocument resumeToken = new BsonDocument("token", new BsonString(UUID.randomUUID().toString()));
when(changeStreamIterable.resumeAfter(any())).thenReturn(changeStreamIterable);
ChangeStreamRequest request = ChangeStreamRequest.builder() //
.collection("start-wars") //
.resumeToken(resumeToken) //
.publishTo(message -> {}) //
.build();
initTask(request, Document.class);
verify(changeStreamIterable).resumeAfter(eq(resumeToken));
}
@Test // DATAMONGO-2258
void shouldApplyResumeAfterToChangeStream() {
when(changeStreamIterable.resumeAfter(any())).thenReturn(changeStreamIterable);
BsonDocument resumeToken = new BsonDocument("token", new BsonString(UUID.randomUUID().toString()));
ChangeStreamRequest request = ChangeStreamRequest.builder() //
.collection("start-wars") //
.resumeAfter(resumeToken) //
.publishTo(message -> {}) //
.build();
initTask(request, Document.class);
verify(changeStreamIterable).resumeAfter(eq(resumeToken));
}
@Test // DATAMONGO-2258
void shouldApplyStartAfterToChangeStream() {
when(changeStreamIterable.startAfter(any())).thenReturn(changeStreamIterable);
BsonDocument resumeToken = new BsonDocument("token", new BsonString(UUID.randomUUID().toString()));
ChangeStreamRequest request = ChangeStreamRequest.builder() //
.collection("start-wars") //
.startAfter(resumeToken) //
.publishTo(message -> {}) //
.build();
initTask(request, Document.class);
verify(changeStreamIterable).startAfter(eq(resumeToken));
}
private MongoCursor<ChangeStreamDocument<Document>> initTask(ChangeStreamRequest request, Class<?> targetType) {
ChangeStreamTask task = new ChangeStreamTask(template, request, targetType, er -> {});
return task.initCursor(template, request.getRequestOptions(), targetType);
}
}