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pivovarit merged 1 commit into from
Apr 5, 2018
Merged

BAEL-1512 Filtering Observables in RxJava #3935

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147 changes: 81 additions & 66 deletions rxjava/src/test/java/com/baeldung/rxjava/filters/RxJavaTimeFilteringOperatorsTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -3,201 +3,216 @@
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

import org.junit.Ignore;
import org.junit.Test;

import rx.Observable;
import rx.observers.TestSubscriber;
import rx.schedulers.TestScheduler;

@Ignore("Manual only")
public class RxJavaTimeFilteringOperatorsTest {

@Test
public void givenTimedObservable_whenSampling_thenOnlySampleItemsAreEmitted() throws InterruptedException {
public void givenTimedObservable_whenSampling_thenOnlySampleItemsAreEmitted() {

TestScheduler testScheduler = new TestScheduler();

Observable<Integer> timedObservable =
Observable.just(1, 2, 3, 4, 5, 6)
.zipWith(
Observable.interval(0, 1, TimeUnit.SECONDS),
(item, time) -> item
);
Observable.just(1, 2, 3, 4, 5, 6)
.zipWith(
Observable.interval(0, 1, TimeUnit.SECONDS, testScheduler),
(item, time) -> item
);

TestSubscriber<Integer> subscriber = new TestSubscriber();

Observable<Integer> sampledObservable =
timedObservable.sample(Observable.interval(2500L, TimeUnit.MILLISECONDS));
timedObservable.sample(2500L, TimeUnit.MILLISECONDS, testScheduler);

sampledObservable.subscribe(subscriber);

Thread.sleep(7000);
testScheduler.advanceTimeBy(7, TimeUnit.SECONDS);

subscriber.assertCompleted();
subscriber.assertNoErrors();
subscriber.assertValues(3, 5, 6);
}

@Test
public void givenTimedObservable_whenThrottlingLast_thenThrottleLastItemsAreEmitted() throws InterruptedException {
public void givenTimedObservable_whenThrottlingLast_thenThrottleLastItemsAreEmitted() {

TestScheduler testScheduler = new TestScheduler();

Observable<Integer> timedObservable =
Observable.just(1, 2, 3, 4, 5, 6)
.zipWith(
Observable.interval(0, 1, TimeUnit.SECONDS),
(item, time) -> item
);
Observable.just(1, 2, 3, 4, 5, 6)
.zipWith(
Observable.interval(0, 1, TimeUnit.SECONDS, testScheduler),
(item, time) -> item
);

TestSubscriber<Integer> subscriber = new TestSubscriber();

Observable<Integer> filteredObservable = timedObservable.throttleLast(3100L, TimeUnit.MILLISECONDS);
Observable<Integer> filteredObservable = timedObservable.throttleLast(3100L, TimeUnit.MILLISECONDS, testScheduler);

filteredObservable.subscribe(subscriber);

Thread.sleep(7000);
testScheduler.advanceTimeBy(7, TimeUnit.SECONDS);

subscriber.assertCompleted();
subscriber.assertNoErrors();
subscriber.assertValues(4, 6);
}

@Test
public void givenRangeObservable_whenThrottlingFirst_thenThrottledFirstItemsAreEmitted() throws InterruptedException {
public void givenRangeObservable_whenThrottlingFirst_thenThrottledFirstItemsAreEmitted() {

TestScheduler testScheduler = new TestScheduler();

Observable<Integer> timedObservable =
Observable.just(1, 2, 3, 4, 5, 6)
.zipWith(
Observable.interval(0, 1, TimeUnit.SECONDS),
(item, time) -> item
);
Observable.just(1, 2, 3, 4, 5, 6)
.zipWith(
Observable.interval(0, 1, TimeUnit.SECONDS, testScheduler),
(item, time) -> item
);

TestSubscriber<Integer> subscriber = new TestSubscriber();

Observable<Integer> filteredObservable =
timedObservable.throttleFirst(4100L, TimeUnit.MILLISECONDS);
timedObservable.throttleFirst(4100L, TimeUnit.MILLISECONDS, testScheduler);

filteredObservable.subscribe(subscriber);

Thread.sleep(7000);
testScheduler.advanceTimeBy(7, TimeUnit.SECONDS);

subscriber.assertCompleted();
subscriber.assertNoErrors();
subscriber.assertValues(1, 6);
}

@Test
public void givenTimedObservable_whenThrottlingWithTimeout_thenLastItemIsEmitted() throws InterruptedException {
public void givenTimedObservable_whenThrottlingWithTimeout_thenLastItemIsEmitted() {

TestScheduler testScheduler = new TestScheduler();

Observable<Integer> timedObservable =
Observable.just(1, 2, 3, 4, 5, 6)
.zipWith(
Observable.interval(0, 1, TimeUnit.SECONDS),
(item, time) -> item
);
Observable.just(1, 2, 3, 4, 5, 6)
.zipWith(
Observable.interval(0, 1, TimeUnit.SECONDS, testScheduler),
(item, time) -> item
);

TestSubscriber<Integer> subscriber = new TestSubscriber();

Observable<Integer> filteredObservable = timedObservable.throttleWithTimeout(2000L, TimeUnit.MILLISECONDS);
Observable<Integer> filteredObservable = timedObservable.throttleWithTimeout(2000L, TimeUnit.MILLISECONDS, testScheduler);

filteredObservable.subscribe(subscriber);

Thread.sleep(7000);
testScheduler.advanceTimeBy(7, TimeUnit.SECONDS);

subscriber.assertCompleted();
subscriber.assertNoErrors();
subscriber.assertValue(6);
}

@Test
public void givenTimedObservable_whenDebounceOperatorIsApplied_thenLastItemIsEmitted() throws InterruptedException {
public void givenTimedObservable_whenDebounceOperatorIsApplied_thenLastItemIsEmitted() {

TestScheduler testScheduler = new TestScheduler();

Observable<Integer> timedObservable =
Observable.just(1, 2, 3, 4, 5, 6)
.zipWith(
Observable.interval(0, 1, TimeUnit.SECONDS),
(item, time) -> item
);
Observable.just(1, 2, 3, 4, 5, 6)
.zipWith(
Observable.interval(0, 1, TimeUnit.SECONDS, testScheduler),
(item, time) -> item
);

TestSubscriber<Integer> subscriber = new TestSubscriber();

Observable<Integer> filteredObservable = timedObservable.debounce(2000L, TimeUnit.MILLISECONDS);
Observable<Integer> filteredObservable = timedObservable.debounce(2000L, TimeUnit.MILLISECONDS, testScheduler);

filteredObservable.subscribe(subscriber);

Thread.sleep(7000);
testScheduler.advanceTimeBy(7, TimeUnit.SECONDS);

subscriber.assertCompleted();
subscriber.assertNoErrors();
subscriber.assertValue(6);
}

@Test
public void givenTimedObservable_whenUsingTimeout_thenTimeOutException() throws InterruptedException {
public void givenTimedObservable_whenUsingTimeout_thenTimeOutException() {

TestScheduler testScheduler = new TestScheduler();

Observable<Integer> timedObservable =
Observable.just(1, 2, 3, 4, 5, 6)
.zipWith(
Observable.interval(0, 1, TimeUnit.SECONDS),
(item, time) -> item
);
Observable.just(1, 2, 3, 4, 5, 6)
.zipWith(
Observable.interval(0, 1, TimeUnit.SECONDS, testScheduler),
(item, time) -> item
);

TestSubscriber<Integer> subscriber = new TestSubscriber();

Observable<Integer> filteredObservable = timedObservable.timeout(500L, TimeUnit.MILLISECONDS);
Observable<Integer> filteredObservable = timedObservable.timeout(500L, TimeUnit.MILLISECONDS, testScheduler);

filteredObservable.subscribe(subscriber);

Thread.sleep(7000);
testScheduler.advanceTimeBy(7, TimeUnit.SECONDS);

subscriber.assertError(TimeoutException.class);
subscriber.assertValues(1);
}

@Test
public void givenObservable_whenSkippingUntil_thenItemsAreSkippedUntilSecondObservableEmitsItems() throws InterruptedException {
public void givenObservable_whenSkippingUntil_thenItemsAreSkippedUntilSecondObservableEmitsItems() {

TestScheduler testScheduler = new TestScheduler();

Observable<Integer> timedObservable =
Observable.just(1, 2, 3, 4, 5, 6)
.zipWith(
Observable.interval(0, 1, TimeUnit.SECONDS),
(item, time) -> item
);
Observable.just(1, 2, 3, 4, 5, 6)
.zipWith(
Observable.interval(0, 1, TimeUnit.SECONDS, testScheduler),
(item, time) -> item
);


Observable<Integer> delayedObservable = Observable.just(1)
.delay(3000, TimeUnit.MILLISECONDS);
.delay(3000, TimeUnit.MILLISECONDS, testScheduler);

TestSubscriber<Integer> subscriber = new TestSubscriber();

Observable<Integer> filteredObservable = timedObservable.skipUntil(delayedObservable);

filteredObservable.subscribe(subscriber);

Thread.sleep(7000);
testScheduler.advanceTimeBy(7, TimeUnit.SECONDS);

subscriber.assertCompleted();
subscriber.assertNoErrors();
subscriber.assertValues(4, 5, 6);
}

@Test
public void givenObservable_whenSkippingWhile_thenItemsAreEmittedUntilSecondObservableEmitsItems() throws InterruptedException {
public void givenObservable_whenSkippingWhile_thenItemsAreEmittedUntilSecondObservableEmitsItems() {

TestScheduler testScheduler = new TestScheduler();

Observable<Integer> timedObservable =
Observable.just(1, 2, 3, 4, 5, 6)
.zipWith(
Observable.interval(0, 1, TimeUnit.SECONDS),
(item, time) -> item
);
Observable.just(1, 2, 3, 4, 5, 6)
.zipWith(
Observable.interval(0, 1, TimeUnit.SECONDS, testScheduler),
(item, time) -> item
);

TestSubscriber subscriber = new TestSubscriber();

Observable<Integer> delayedObservable = Observable.just(1)
.delay(3000, TimeUnit.MILLISECONDS);
.delay(3000, TimeUnit.MILLISECONDS, testScheduler);

Observable<Integer> filteredObservable = timedObservable.takeUntil(delayedObservable);

filteredObservable.subscribe(subscriber);

Thread.sleep(7000);
testScheduler.advanceTimeBy(7, TimeUnit.SECONDS);

subscriber.assertCompleted();
subscriber.assertNoErrors();
Expand Down