BAEL - 1511

This commit is contained in:
TINO 2018-11-18 21:53:48 +03:00
parent 702495be5f
commit a32cb1a489
2 changed files with 111 additions and 0 deletions

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@ -34,6 +34,13 @@
<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>
@ -41,5 +48,6 @@
<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>

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@ -0,0 +1,103 @@
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();
@Test
public void givenSyncMethod_whenConvertedWithFromCallable_thenReturnObservable() {// method will execute every time it gets subscribed
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());
}
}
@Test
public void givenSyncMethod_whenConvertedWithStart_thenReturnObservable() {// method will execute only once and cache its result.
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());
}
}
@Test
public void givenAsyncMethod_whenConvertedWithFromFuture_thenRetrunObservble() { // method will execute only once and cache its result.
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();
}
@Test
public void givenAsyncMethod_whenConvertedWithStartFuture_thenRetrunObservble() {// method will execute every time it gets subscribed
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();
}
@Test
public void givenAsyncMethod_whenConvertedWithDeferFuture_thenRetrunObservble() { // method will execute only once and cache its result.
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();
}
}