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Merge pull request #5724 from tinomthomas/master 

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Tom Hombergs 2018-12-07 12:07:27 +01:00 committed by GitHub
parent e2eeb795cd 9e1c9ee99a
commit fba79a009c
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2 changed files with 156 additions and 41 deletions
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88
rxjava-2/pom.xml
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@ -1,45 +1,53 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>rxjava-2</artifactId>
<version>1.0-SNAPSHOT</version>
<name>rxjava-2</name>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-java</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../parent-java</relativePath>
</parent>
<artifactId>rxjava-2</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>io.reactivex.rxjava2</groupId>
<artifactId>rxjava</artifactId>
<version>${rx.java2.version}</version>
</dependency>
<dependency>
<groupId>com.jayway.awaitility</groupId>
<artifactId>awaitility</artifactId>
<version>${awaitility.version}</version>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
</dependency>
<dependency>
<groupId>com.jakewharton.rxrelay2</groupId>
<artifactId>rxrelay</artifactId>
<version>${rxrelay.version}</version>
</dependency>
</dependencies>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-java</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../parent-java</relativePath>
</parent>
<properties>
<assertj.version>3.8.0</assertj.version>
<rx.java2.version>2.2.2</rx.java2.version>
<awaitility.version>1.7.0</awaitility.version>
<rxrelay.version>2.0.0</rxrelay.version>
</properties>
<dependencies>
<dependency>
<groupId>io.reactivex.rxjava2</groupId>
<artifactId>rxjava</artifactId>
<version>${rx.java2.version}</version>
</dependency>
<dependency>
<groupId>com.jayway.awaitility</groupId>
<artifactId>awaitility</artifactId>
<version>${awaitility.version}</version>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
</dependency>
<dependency>
<groupId>com.jakewharton.rxrelay2</groupId>
<artifactId>rxrelay</artifactId>
<version>${rxrelay.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.github.akarnokd/rxjava2-extensions -->
<dependency>
<groupId>com.github.akarnokd</groupId>
<artifactId>rxjava2-extensions</artifactId>
<version>${rxjava2.ext.version}</version>
</dependency>
</dependencies>
<properties>
<assertj.version>3.8.0</assertj.version>
<rx.java2.version>2.2.2</rx.java2.version>
<awaitility.version>1.7.0</awaitility.version>
<rxrelay.version>2.0.0</rxrelay.version>
<rxjava2.ext.version>0.20.4</rxjava2.ext.version>
</properties>
</project>

107
rxjava-2/src/test/java/com/baeldung/rxjava/AsyncAndSyncToObservableIntegrationTest.java Normal file
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@ -0,0 +1,107 @@
package com.baeldung.rxjava;
import static org.junit.Assert.assertEquals;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import org.junit.Test;
import hu.akarnokd.rxjava2.async.AsyncObservable;
import io.reactivex.Observable;
public class AsyncAndSyncToObservableIntegrationTest {
AtomicInteger counter = new AtomicInteger();
Callable<Integer> callable = () -> counter.incrementAndGet();
/* Method will execute every time it gets subscribed*/
@Test
public void givenSyncMethod_whenConvertedWithFromCallable_thenReturnObservable() {
Observable<Integer> source = Observable.fromCallable(callable);
for (int i = 1; i < 5; i++) {
source.test()
.awaitDone(5, TimeUnit.SECONDS)
.assertResult(i);
assertEquals(i, counter.get());
}
}
/* Method will execute only once and cache its result.*/
@Test
public void givenSyncMethod_whenConvertedWithStart_thenReturnObservable() {
Observable<Integer> source = AsyncObservable.start(callable);
for (int i = 1; i < 5; i++) {
source.test()
.awaitDone(5, TimeUnit.SECONDS)
.assertResult(1);
assertEquals(1, counter.get());
}
}
/* Method will execute only once and cache its result.*/
@Test
public void givenAsyncMethod_whenConvertedWithFromFuture_thenRetrunObservble() {
ExecutorService executor = Executors.newSingleThreadExecutor();
Future<Integer> future = executor.submit(callable);
Observable<Integer> source = Observable.fromFuture(future);
for (int i = 1; i < 5; i++) {
source.test()
.awaitDone(5, TimeUnit.SECONDS)
.assertResult(1);
assertEquals(1, counter.get());
}
executor.shutdown();
}
/* Method will execute every time it gets subscribed*/
@Test
public void givenAsyncMethod_whenConvertedWithStartFuture_thenRetrunObservble() {
ExecutorService executor = Executors.newSingleThreadExecutor();
Observable<Integer> source = AsyncObservable.startFuture(() -> executor.submit(callable));
for (int i = 1; i < 5; i++) {
source.test()
.awaitDone(5, TimeUnit.SECONDS)
.assertResult(i);
assertEquals(i, counter.get());
}
executor.shutdown();
}
/*Method will execute only once and cache its result.*/
@Test
public void givenAsyncMethod_whenConvertedWithDeferFuture_thenRetrunObservble() {
List<Integer> list = Arrays.asList(new Integer[] { counter.incrementAndGet(), counter.incrementAndGet(), counter.incrementAndGet() });
ExecutorService exec = Executors.newSingleThreadExecutor();
Callable<Observable<Integer>> callable = () -> Observable.fromIterable(list);
Observable<Integer> source = AsyncObservable.deferFuture(() -> exec.submit(callable));
for (int i = 1; i < 4; i++) {
source.test()
.awaitDone(5, TimeUnit.SECONDS)
.assertResult(1, 2, 3);
}
exec.shutdown();
}
}