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#328 - Fix reactive MongoDB tailable cursor examples.

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Replace flatMap(…) operator after collection drop with then(…) to create the collection regardless of whether the previous operation emitted an element or not.

Collect emitted elements to add an assertion and fail if the tailing does not work.
This commit is contained in:
Mark Paluch
2017-11-30 17:18:10 -08:00
parent 627a08b02b
commit a2f963df14
2 changed files with 24 additions and 9 deletions
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16
mongodb/reactive/src/test/java/example/springdata/mongodb/people/ReactivePersonRepositoryIntegrationTest.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2015-2016 the original author or authors.
* Copyright 2015-2017 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.
@@ -22,6 +22,8 @@ import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import java.util.List;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.CountDownLatch;
import org.junit.Before;
@@ -50,8 +52,10 @@ public class ReactivePersonRepositoryIntegrationTest {
operations.collectionExists(Person.class) //
.flatMap(exists -> exists ? operations.dropCollection(Person.class) : Mono.just(exists)) //
.flatMap(o -> operations.createCollection(Person.class, CollectionOptions.empty().size(1024 * 1024).maxDocuments( 100).capped())) //
.then() //
.then(operations.createCollection(Person.class, CollectionOptions.empty() //
.size(1024 * 1024) //
.maxDocuments(100) //
.capped())) //
.block();
repository
@@ -61,7 +65,6 @@ public class ReactivePersonRepositoryIntegrationTest {
new Person("Jesse", "Pinkman", 27))) //
.then() //
.block();
}
/**
@@ -109,8 +112,11 @@ public class ReactivePersonRepositoryIntegrationTest {
@Test
public void shouldStreamDataWithTailableCursor() throws Exception {
Queue<Person> people = new ConcurrentLinkedQueue<>();
Disposable disposable = repository.findWithTailableCursorBy() //
.doOnNext(System.out::println) //
.doOnNext(people::add) //
.doOnComplete(() -> System.out.println("Complete")) //
.doOnTerminate(() -> System.out.println("Terminated")) //
.subscribe();
@@ -127,6 +133,8 @@ public class ReactivePersonRepositoryIntegrationTest {
repository.save(new Person("Gus", "Fring", 53)).subscribe();
Thread.sleep(100);
assertThat(people).hasSize(6);
}
/**

17
mongodb/reactive/src/test/java/example/springdata/mongodb/people/RxJava2PersonRepositoryIntegrationTest.java
View File

@@ -20,10 +20,11 @@ import static org.assertj.core.api.Assertions.*;
import io.reactivex.Flowable;
import io.reactivex.Single;
import io.reactivex.disposables.Disposable;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import java.util.List;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.CountDownLatch;
import org.junit.Before;
@@ -56,9 +57,10 @@ public class RxJava2PersonRepositoryIntegrationTest {
operations.collectionExists(Person.class) //
.flatMap(exists -> exists ? operations.dropCollection(Person.class) : Mono.just(exists)) //
.flatMap(o -> operations.createCollection(Person.class,
CollectionOptions.empty().size(1024 * 1024).maxDocuments(100).capped())) //
.then() //
.then(operations.createCollection(Person.class, CollectionOptions.empty() //
.size(1024 * 1024) //
.maxDocuments(100) //
.capped())) //
.block();
repository.saveAll(Flowable.just(new Person("Walter", "White", 50), //
@@ -112,13 +114,16 @@ public class RxJava2PersonRepositoryIntegrationTest {
}
/**
* A tailable cursor streams data using {@link Flux} as it arrives inside the capped collection.
* A tailable cursor streams data using {@link Flowable} as it arrives inside the capped collection.
*/
@Test
public void shouldStreamDataWithTailableCursor() throws Exception {
Queue<Person> people = new ConcurrentLinkedQueue<>();
Disposable subscription = repository.findWithTailableCursorBy() //
.doOnNext(System.out::println) //
.doOnNext(people::add) //
.doOnComplete(() -> System.out.println("Complete")) //
.doOnTerminate(() -> System.out.println("Terminated")) //
.subscribe();
@@ -135,6 +140,8 @@ public class RxJava2PersonRepositoryIntegrationTest {
repository.save(new Person("Gus", "Fring", 53)).subscribe();
Thread.sleep(100);
assertThat(people).hasSize(6);
}
/**