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/**
* Copyright 2014 Netflix, Inc.
*
* 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
*
* http://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 rx;
import static org.junit.Assert.*;
import static org.mockito.Matchers.*;
import static org.mockito.Mockito.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.*;
import org.junit.*;
import rx.Completable.*;
import rx.exceptions.*;
import rx.functions.*;
import rx.observers.TestSubscriber;
import rx.plugins.RxJavaHooks;
import rx.schedulers.*;
import rx.subjects.PublishSubject;
import rx.subscriptions.*;
/**
* Test Completable methods and operators.
*/
public class CompletableTest {
/**
* Iterable that returns an Iterator that throws in its hasNext method.
*/
static final class IterableIteratorNextThrows implements Iterable<Completable> {
@Override
public Iterator<Completable> iterator() {
return new Iterator<Completable>() {
@Override
public boolean hasNext() {
return true;
}
@Override
public Completable next() {
throw new TestException();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
}
/**
* Iterable that returns an Iterator that throws in its next method.
*/
static final class IterableIteratorHasNextThrows implements Iterable<Completable> {
@Override
public Iterator<Completable> iterator() {
return new Iterator<Completable>() {
@Override
public boolean hasNext() {
throw new TestException();
}
@Override
public Completable next() {
return null;
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
}
/**
* A class containing a completable instance and counts the number of subscribers.
*/
static final class NormalCompletable extends AtomicInteger {
/** */
private static final long serialVersionUID = 7192337844700923752L;
public final Completable completable = Completable.create(new OnSubscribe() {
@Override
public void call(CompletableSubscriber s) {
getAndIncrement();
s.onSubscribe(Subscriptions.unsubscribed());
s.onCompleted();
}
});
/**
* Asserts the given number of subscriptions happened.
* @param n the expected number of subscriptions
*/
public void assertSubscriptions(int n) {
Assert.assertEquals(n, get());
}
}
/**
* A class containing a completable instance that emits a TestException and counts
* the number of subscribers.
*/
static final class ErrorCompletable extends AtomicInteger {
/** */
private static final long serialVersionUID = 7192337844700923752L;
public final Completable completable = Completable.create(new OnSubscribe() {
@Override
public void call(CompletableSubscriber s) {
getAndIncrement();
s.onSubscribe(Subscriptions.unsubscribed());
s.onError(new TestException());
}
});
/**
* Asserts the given number of subscriptions happened.
* @param n the expected number of subscriptions
*/
public void assertSubscriptions(int n) {
Assert.assertEquals(n, get());
}
}
/** A normal Completable object. */
final NormalCompletable normal = new NormalCompletable();
/** An error Completable object. */
final ErrorCompletable error = new ErrorCompletable();
@Test(timeout = 5000)
public void complete() {
Completable c = Completable.complete();
c.await();
}
@Test(expected = NullPointerException.class)
public void concatNull() {
Completable.concat((Completable[])null);
}
@Test(timeout = 5000)
public void concatEmpty() {
Completable c = Completable.concat();
c.await();
}
@Test(timeout = 5000)
public void concatSingleSource() {
Completable c = Completable.concat(normal.completable);
c.await();
normal.assertSubscriptions(1);
}
@Test(timeout = 5000, expected = TestException.class)
public void concatSingleSourceThrows() {
Completable c = Completable.concat(error.completable);
c.await();
}
@Test(timeout = 5000)
public void concatMultipleSources() {
Completable c = Completable.concat(normal.completable, normal.completable, normal.completable);
c.await();
normal.assertSubscriptions(3);
}
@Test(timeout = 5000, expected = TestException.class)
public void concatMultipleOneThrows() {
Completable c = Completable.concat(normal.completable, error.completable, normal.completable);
c.await();
}
@Test(timeout = 5000, expected = NullPointerException.class)
public void concatMultipleOneIsNull() {
Completable c = Completable.concat(normal.completable, null);
c.await();
}
@Test(timeout = 5000)
public void concatIterableEmpty() {
Completable c = Completable.concat(Collections.<Completable>emptyList());
c.await();
}
@Test(expected = NullPointerException.class)
public void concatIterableNull() {
Completable.concat((Iterable<Completable>)null);
}
@Test(timeout = 5000, expected = NullPointerException.class)
public void concatIterableIteratorNull() {
Completable c = Completable.concat(new Iterable<Completable>() {
@Override
public Iterator<Completable> iterator() {
return null;
}
});
c.await();
}
@Test(timeout = 5000, expected = NullPointerException.class)
public void concatIterableWithNull() {
Completable c = Completable.concat(Arrays.asList(normal.completable, (Completable)null));
c.await();
}
@Test(timeout = 5000)
public void concatIterableSingle() {
Completable c = Completable.concat(Collections.singleton(normal.completable));
c.await();
normal.assertSubscriptions(1);
}
@Test(timeout = 5000)
public void concatIterableMany() {
Completable c = Completable.concat(Arrays.asList(normal.completable, normal.completable, normal.completable));
c.await();
normal.assertSubscriptions(3);
}
@Test(timeout = 5000, expected = TestException.class)
public void concatIterableOneThrows() {
Completable c = Completable.concat(Collections.singleton(error.completable));
c.await();
}
@Test(timeout = 5000, expected = TestException.class)
public void concatIterableManyOneThrows() {
Completable c = Completable.concat(Arrays.asList(normal.completable, error.completable));
c.await();
}
@Test(expected = TestException.class)
public void concatIterableIterableThrows() {
Completable c = Completable.concat(new Iterable<Completable>() {
@Override
public Iterator<Completable> iterator() {
throw new TestException();
}
});
c.await();
}
@Test(expected = TestException.class)
public void concatIterableIteratorHasNextThrows() {
Completable c = Completable.concat(new IterableIteratorHasNextThrows());
c.await();
}
@Test(expected = TestException.class)
public void concatIterableIteratorNextThrows() {
Completable c = Completable.concat(new IterableIteratorNextThrows());
c.await();
}
@Test(timeout = 5000)
public void concatObservableEmpty() {
Completable c = Completable.concat(Observable.<Completable>empty());
c.await();
}
@Test(timeout = 5000, expected = TestException.class)
public void concatObservableError() {
Completable c = Completable.concat(Observable.<Completable>error(new TestException()));
c.await();
}
@Test(timeout = 5000)
public void concatObservableSingle() {
Completable c = Completable.concat(Observable.just(normal.completable));
c.await();
normal.assertSubscriptions(1);
}
@Test(timeout = 5000, expected = TestException.class)
public void concatObservableSingleThrows() {
Completable c = Completable.concat(Observable.just(error.completable));
c.await();
}
@Test(timeout = 5000)
public void concatObservableMany() {
Completable c = Completable.concat(Observable.just(normal.completable).repeat(3));
c.await();
normal.assertSubscriptions(3);
}
@Test(timeout = 5000, expected = TestException.class)
public void concatObservableManyOneThrows() {
Completable c = Completable.concat(Observable.just(normal.completable, error.completable));
c.await();
}
@Test(timeout = 5000)
public void concatObservablePrefetch() {
final List<Long> requested = new ArrayList<Long>();
Observable<Completable> cs = Observable
.just(normal.completable)
.repeat(10)
.doOnRequest(new Action1<Long>() {
@Override
public void call(Long v) {
requested.add(v);
}
});
Completable c = Completable.concat(cs, 5);
c.await();
// FIXME this request pattern looks odd because all 10 completions trigger 1 requests
Assert.assertEquals(Arrays.asList(5L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L), requested);
}
@Test
public void andThen() {
TestSubscriber<String> ts = new TestSubscriber<String>(0);
Completable.complete().andThen(Observable.just("foo")).subscribe(ts);
ts.requestMore(1);
ts.assertValue("foo");
ts.assertCompleted();
ts.assertNoErrors();
}
@Test
public void andThenNever() {
TestSubscriber<String> ts = new TestSubscriber<String>(0);
Completable.never().andThen(Observable.just("foo")).subscribe(ts);
ts.requestMore(1);
ts.assertNoValues();
ts.assertNoTerminalEvent();
}
@Test
public void andThenError() {
TestSubscriber<String> ts = new TestSubscriber<String>(0);
final AtomicBoolean hasRun = new AtomicBoolean(false);
final Exception e = new Exception();
Completable.create(new OnSubscribe() {
@Override
public void call(CompletableSubscriber cs) {
cs.onError(e);
}
})
.andThen(Observable.<String>create(new Observable.OnSubscribe<String>() {
@Override
public void call(Subscriber<? super String> s) {
hasRun.set(true);
s.onNext("foo");
s.onCompleted();
}
}))
.subscribe(ts);
ts.assertNoValues();
ts.assertError(e);
Assert.assertFalse("Should not have subscribed to observable when completable errors", hasRun.get());
}
@Test
public void andThenSubscribeOn() {
TestSubscriber<String> ts = new TestSubscriber<String>(0);
TestScheduler scheduler = new TestScheduler();
Completable.complete().andThen(Observable.just("foo").delay(1, TimeUnit.SECONDS, scheduler)).subscribe(ts);
ts.requestMore(1);
ts.assertNoValues();
ts.assertNoTerminalEvent();
scheduler.advanceTimeBy(1, TimeUnit.SECONDS);
ts.assertValue("foo");
ts.assertCompleted();
ts.assertNoErrors();
}
@Test
public void andThenSingle() {
TestSubscriber<String> ts = new TestSubscriber<String>(0);
Completable.complete().andThen(Single.just("foo")).subscribe(ts);
ts.requestMore(1);
ts.assertValue("foo");
ts.assertCompleted();
ts.assertNoErrors();
ts.assertUnsubscribed();
}
@Test
public void andThenSingleNever() {
TestSubscriber<String> ts = new TestSubscriber<String>(0);
Completable.never().andThen(Single.just("foo")).subscribe(ts);
ts.requestMore(1);
ts.assertNoValues();
ts.assertNoTerminalEvent();
}
@Test
public void andThenSingleError() {
TestSubscriber<String> ts = new TestSubscriber<String>(0);
final AtomicBoolean hasRun = new AtomicBoolean(false);
final Exception e = new Exception();
Completable.error(e)
.andThen(Single.<String>create(new Single.OnSubscribe<String>() {
@Override
public void call(SingleSubscriber<? super String> s) {
hasRun.set(true);
s.onSuccess("foo");
}
}))
.subscribe(ts);
ts.assertNoValues();
ts.assertError(e);
ts.assertUnsubscribed();
Assert.assertFalse("Should not have subscribed to single when completable errors", hasRun.get());
}
@Test
public void andThenSingleSubscribeOn() {
TestSubscriber<String> ts = new TestSubscriber<String>(0);
TestScheduler scheduler = new TestScheduler();
Completable.complete().andThen(Single.just("foo").delay(1, TimeUnit.SECONDS, scheduler)).subscribe(ts);
ts.requestMore(1);
ts.assertNoValues();
ts.assertNoTerminalEvent();
scheduler.advanceTimeBy(1, TimeUnit.SECONDS);
ts.assertValue("foo");
ts.assertCompleted();
ts.assertNoErrors();
ts.assertUnsubscribed();
}
@Test(expected = NullPointerException.class)
public void createNull() {
Completable.create((Completable.OnSubscribe)null);
}
@Test(timeout = 5000, expected = NullPointerException.class)
public void createOnSubscribeThrowsNPE() {
Completable c = Completable.create(new OnSubscribe() {
@Override
public void call(CompletableSubscriber s) { throw new NullPointerException(); }
});
c.await();
}
@Test(timeout = 5000)
public void createOnSubscribeThrowsRuntimeException() {
try {
Completable c = Completable.create(new OnSubscribe() {
@Override
public void call(CompletableSubscriber s) {
throw new TestException();
}
});
c.await();
Assert.fail("Did not throw exception");
} catch (NullPointerException ex) {
if (!(ex.getCause() instanceof TestException)) {
ex.printStackTrace();
Assert.fail("Did not wrap the TestException but it returned: " + ex);
}
}
}
@Test(timeout = 5000)
public void defer() {
Completable c = Completable.defer(new Func0<Completable>() {
@Override
public Completable call() {
return normal.completable;
}
});
normal.assertSubscriptions(0);
c.await();
normal.assertSubscriptions(1);
}
@Test(expected = NullPointerException.class)
public void deferNull() {
Completable.defer(null);
}
@Test(timeout = 5000, expected = NullPointerException.class)
public void deferReturnsNull() {
Completable c = Completable.defer(new Func0<Completable>() {
@Override
public Completable call() {
return null;
}
});
c.await();
}
@Test(timeout = 5000, expected = TestException.class)
public void deferFunctionThrows() {
Completable c = Completable.defer(new Func0<Completable>() {
@Override
public Completable call() { throw new TestException(); }
});
c.await();
}
@Test(timeout = 5000, expected = TestException.class)
public void deferErrorSource() {
Completable c = Completable.defer(new Func0<Completable>() {
@Override
public Completable call() {
return error.completable;
}
});
c.await();
}
@Test(expected = NullPointerException.class)
public void errorNull() {
Completable.error((Throwable)null);
}
@Test(timeout = 5000, expected = TestException.class)
public void errorNormal() {
Completable c = Completable.error(new TestException());
c.await();
}
@Test(expected = NullPointerException.class)
public void fromCallableNull() {
Completable.fromCallable(null);
}
@Test(timeout = 5000)
public void fromCallableNormal() {
final AtomicInteger calls = new AtomicInteger();
Completable c = Completable.fromCallable(new Callable<Object>() {
@Override
public Object call() throws Exception {
return calls.getAndIncrement();
}
});
c.await();
Assert.assertEquals(1, calls.get());
}
@Test(timeout = 5000, expected = TestException.class)
public void fromCallableThrows() {
Completable c = Completable.fromCallable(new Callable<Object>() {
@Override
public Object call() throws Exception { throw new TestException(); }
});
c.await();
}
@Test(expected = NullPointerException.class)
public void fromObservableNull() {
Completable.fromObservable(null);
}
@Test(timeout = 5000)
public void fromObservableEmpty() {
Completable c = Completable.fromObservable(Observable.empty());
c.await();
}
@Test(timeout = 5000)
public void fromObservableSome() {
for (int n = 1; n < 10000; n *= 10) {
Completable c = Completable.fromObservable(Observable.range(1, n));
c.await();
}
}
@Test(timeout = 5000, expected = TestException.class)
public void fromObservableError() {
Completable c = Completable.fromObservable(Observable.error(new TestException()));
c.await();
}
@Test(expected = NullPointerException.class)
public void fromFutureNull() {
Completable.fromFuture(null);
}
@Test(timeout = 5000)
public void fromFutureNormal() {
ExecutorService exec = Executors.newSingleThreadExecutor();
try {
Completable c = Completable.fromFuture(exec.submit(new Runnable() {
@Override
public void run() {
// no action
}
}));
c.await();
} finally {
exec.shutdown();
}
}
@Test(timeout = 5000)
public void fromFutureThrows() {
ExecutorService exec = Executors.newSingleThreadExecutor();
Completable c = Completable.fromFuture(exec.submit(new Runnable() {
@Override
public void run() {
throw new TestException();
}
}));
try {
c.await();
Assert.fail("Failed to throw Exception");
} catch (RuntimeException ex) {
if (!((ex.getCause() instanceof ExecutionException) && (ex.getCause().getCause() instanceof TestException))) {
ex.printStackTrace();
Assert.fail("Wrong exception received");
}
} finally {
exec.shutdown();
}
}
@Test(expected = NullPointerException.class)
public void fromActionNull() {
Completable.fromAction(null);
}
@Test(timeout = 5000)
public void fromActionNormal() {
final AtomicInteger calls = new AtomicInteger();
Completable c = Completable.fromAction(new Action0() {
@Override
public void call() {
calls.getAndIncrement();
}
});
c.await();
Assert.assertEquals(1, calls.get());
}
@Test(timeout = 5000, expected = TestException.class)
public void fromActionThrows() {
Completable c = Completable.fromAction(new Action0() {
@Override
public void call() { throw new TestException(); }
});
c.await();
}
@Test(expected = NullPointerException.class)
public void fromSingleNull() {
Completable.fromSingle(null);
}
@Test(timeout = 5000)
public void fromSingleNormal() {
Completable c = Completable.fromSingle(Single.just(1));
c.await();
}
@Test(timeout = 5000, expected = TestException.class)
public void fromSingleThrows() {
Completable c = Completable.fromSingle(Single.error(new TestException()));
c.await();
}
@Test(expected = NullPointerException.class)
public void mergeNull() {
Completable.merge((Completable[])null);
}
@Test(timeout = 5000)
public void mergeEmpty() {
Completable c = Completable.merge();
c.await();
}
@Test(timeout = 5000)
public void mergeSingleSource() {
Completable c = Completable.merge(normal.completable);
c.await();
normal.assertSubscriptions(1);
}
@Test(timeout = 5000, expected = TestException.class)
public void mergeSingleSourceThrows() {
Completable c = Completable.merge(error.completable);
c.await();
}
@Test(timeout = 5000)
public void mergeMultipleSources() {
Completable c = Completable.merge(normal.completable, normal.completable, normal.completable);
c.await();
normal.assertSubscriptions(3);
}
@Test(timeout = 5000, expected = TestException.class)
public void mergeMultipleOneThrows() {
Completable c = Completable.merge(normal.completable, error.completable, normal.completable);
c.await();
}
@Test(timeout = 5000, expected = NullPointerException.class)
public void mergeMultipleOneIsNull() {
Completable c = Completable.merge(normal.completable, null);
c.await();
}
@Test(timeout = 5000)
public void mergeIterableEmpty() {
Completable c = Completable.merge(Collections.<Completable>emptyList());
c.await();
}
@Test(expected = NullPointerException.class)
public void mergeIterableNull() {
Completable.merge((Iterable<Completable>)null);
}
@Test(timeout = 5000, expected = NullPointerException.class)
public void mergeIterableIteratorNull() {
Completable c = Completable.merge(new Iterable<Completable>() {
@Override
public Iterator<Completable> iterator() {
return null;
}
});
c.await();
}
@Test(timeout = 5000, expected = NullPointerException.class)
public void mergeIterableWithNull() {
Completable c = Completable.merge(Arrays.asList(normal.completable, (Completable)null));
c.await();
}
@Test(timeout = 5000)
public void mergeIterableSingle() {
Completable c = Completable.merge(Collections.singleton(normal.completable));
c.await();
normal.assertSubscriptions(1);
}
@Test(timeout = 5000)
public void mergeIterableMany() {
Completable c = Completable.merge(Arrays.asList(normal.completable, normal.completable, normal.completable));
c.await();
normal.assertSubscriptions(3);
}
@Test(timeout = 5000, expected = TestException.class)
public void mergeIterableOneThrows() {
Completable c = Completable.merge(Collections.singleton(error.completable));
c.await();
}
@Test(timeout = 5000, expected = TestException.class)
public void mergeIterableManyOneThrows() {
Completable c = Completable.merge(Arrays.asList(normal.completable, error.completable));
c.await();
}
@Test(expected = TestException.class)
public void mergeIterableIterableThrows() {
Completable c = Completable.merge(new Iterable<Completable>() {
@Override
public Iterator<Completable> iterator() {
throw new TestException();
}
});
c.await();
}
@Test(expected = TestException.class)
public void mergeIterableIteratorHasNextThrows() {
Completable c = Completable.merge(new IterableIteratorHasNextThrows());
c.await();
}
@Test(expected = TestException.class)
public void mergeIterableIteratorNextThrows() {
Completable c = Completable.merge(new IterableIteratorNextThrows());
c.await();
}
@Test(timeout = 5000)
public void mergeObservableEmpty() {
Completable c = Completable.merge(Observable.<Completable>empty());
c.await();
}
@Test(timeout = 5000, expected = TestException.class)
public void mergeObservableError() {
Completable c = Completable.merge(Observable.<Completable>error(new TestException()));
c.await();
}
@Test(timeout = 5000)
public void mergeObservableSingle() {
Completable c = Completable.merge(Observable.just(normal.completable));
c.await();
normal.assertSubscriptions(1);
}
@Test(timeout = 5000, expected = TestException.class)
public void mergeObservableSingleThrows() {
Completable c = Completable.merge(Observable.just(error.completable));
c.await();
}
@Test(timeout = 5000)
public void mergeObservableMany() {
Completable c = Completable.merge(Observable.just(normal.completable).repeat(3));
c.await();
normal.assertSubscriptions(3);
}
@Test(timeout = 5000, expected = TestException.class)
public void mergeObservableManyOneThrows() {
Completable c = Completable.merge(Observable.just(normal.completable, error.completable));
c.await();
}
@Test(timeout = 5000)
public void mergeObservableMaxConcurrent() {
final List<Long> requested = new ArrayList<Long>();
Observable<Completable> cs = Observable
.just(normal.completable)
.repeat(10)
.doOnRequest(new Action1<Long>() {
@Override
public void call(Long v) {
requested.add(v);
}
});
Completable c = Completable.merge(cs, 5);
c.await();
// FIXME this request pattern looks odd because all 10 completions trigger 1 requests
Assert.assertEquals(Arrays.asList(5L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L), requested);
}
@Test(expected = NullPointerException.class)
public void mergeDelayErrorNull() {
Completable.mergeDelayError((Completable[])null);
}
@Test(timeout = 5000)
public void mergeDelayErrorEmpty() {
Completable c = Completable.mergeDelayError();
c.await();
}
@Test(timeout = 5000)
public void mergeDelayErrorSingleSource() {
Completable c = Completable.mergeDelayError(normal.completable);
c.await();
normal.assertSubscriptions(1);
}
@Test(timeout = 5000, expected = TestException.class)
public void mergeDelayErrorSingleSourceThrows() {
Completable c = Completable.mergeDelayError(error.completable);
c.await();
}
@Test(timeout = 5000)
public void mergeDelayErrorMultipleSources() {
Completable c = Completable.mergeDelayError(normal.completable, normal.completable, normal.completable);
c.await();
normal.assertSubscriptions(3);
}
@Test(timeout = 5000)
public void mergeDelayErrorMultipleOneThrows() {
Completable c = Completable.mergeDelayError(normal.completable, error.completable, normal.completable);
try {
c.await();
} catch (TestException ex) {
normal.assertSubscriptions(2);
}
}
@Test(timeout = 5000, expected = NullPointerException.class)
public void mergeDelayErrorMultipleOneIsNull() {
Completable c = Completable.mergeDelayError(normal.completable, null);
c.await();
}
@Test(timeout = 5000)
public void mergeDelayErrorIterableEmpty() {
Completable c = Completable.mergeDelayError(Collections.<Completable>emptyList());
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