/**
* Copyright (c) 2016-present, RxJava Contributors.
*
* 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 io.reactivex.internal.operators.single;
import static org.junit.Assert.*;
import java.util.*;
import org.junit.Test;
import io.reactivex.*;
import io.reactivex.exceptions.TestException;
import io.reactivex.observers.TestObserver;
import io.reactivex.plugins.RxJavaPlugins;
import io.reactivex.processors.PublishProcessor;
import io.reactivex.schedulers.Schedulers;
import io.reactivex.subjects.*;
public class SingleAmbTest {
@Test
public void ambWithFirstFires() {
PublishProcessor<Integer> pp1 = PublishProcessor.create();
PublishProcessor<Integer> pp2 = PublishProcessor.create();
TestObserver<Integer> ts = pp1.single(-99).ambWith(pp2.single(-99)).test();
assertTrue(pp1.hasSubscribers());
assertTrue(pp2.hasSubscribers());
pp1.onNext(1);
pp1.onComplete();
assertFalse(pp1.hasSubscribers());
assertFalse(pp2.hasSubscribers());
ts.assertResult(1);
}
@Test
public void ambWithSecondFires() {
PublishProcessor<Integer> pp1 = PublishProcessor.create();
PublishProcessor<Integer> pp2 = PublishProcessor.create();
TestObserver<Integer> ts = pp1.single(-99).ambWith(pp2.single(-99)).test();
assertTrue(pp1.hasSubscribers());
assertTrue(pp2.hasSubscribers());
pp2.onNext(2);
pp2.onComplete();
assertFalse(pp1.hasSubscribers());
assertFalse(pp2.hasSubscribers());
ts.assertResult(2);
}
@SuppressWarnings("unchecked")
@Test(timeout = 1000)
public void ambIterableWithFirstFires() {
PublishProcessor<Integer> pp1 = PublishProcessor.create();
PublishProcessor<Integer> pp2 = PublishProcessor.create();
List<Single<Integer>> singles = Arrays.asList(pp1.single(-99), pp2.single(-99));
TestObserver<Integer> ts = Single.amb(singles).test();
assertTrue(pp1.hasSubscribers());
assertTrue(pp2.hasSubscribers());
pp1.onNext(1);
pp1.onComplete();
assertFalse(pp1.hasSubscribers());
assertFalse(pp2.hasSubscribers());
ts.assertResult(1);
}
@SuppressWarnings("unchecked")
@Test(timeout = 1000)
public void ambIterableWithSecondFires() {
PublishProcessor<Integer> pp1 = PublishProcessor.create();
PublishProcessor<Integer> pp2 = PublishProcessor.create();
List<Single<Integer>> singles = Arrays.asList(pp1.single(-99), pp2.single(-99));
TestObserver<Integer> ts = Single.amb(singles).test();
assertTrue(pp1.hasSubscribers());
assertTrue(pp2.hasSubscribers());
pp2.onNext(2);
pp2.onComplete();
assertFalse(pp1.hasSubscribers());
assertFalse(pp2.hasSubscribers());
ts.assertResult(2);
}
@SuppressWarnings("unchecked")
@Test
public void ambArrayEmpty() {
Single.ambArray()
.test()
.assertFailure(NoSuchElementException.class);
}
@SuppressWarnings("unchecked")
@Test
public void ambSingleSource() {
assertSame(Single.never(), Single.ambArray(Single.never()));
}
@SuppressWarnings("unchecked")
@Test
public void error() {
Single.ambArray(Single.error(new TestException()), Single.just(1))
.test()
.assertFailure(TestException.class);
}
@Test
public void nullSourceSuccessRace() {
for (int i = 0; i < 1000; i++) {
List<Throwable> errors = TestHelper.trackPluginErrors();
try {
final Subject<Integer> ps = ReplaySubject.create();
ps.onNext(1);
@SuppressWarnings("unchecked")
final Single<Integer> source = Single.ambArray(ps.singleOrError(), Single.<Integer>never(), Single.<Integer>never(), null);
Runnable r1 = new Runnable() {
@Override
public void run() {
source.test();
}
};
Runnable r2 = new Runnable() {
@Override
public void run() {
ps.onComplete();
}
};
TestHelper.race(r1, r2, Schedulers.single());
if (!errors.isEmpty()) {
TestHelper.assertError(errors, 0, NullPointerException.class);
}
} finally {
RxJavaPlugins.reset();
}
}
}
@SuppressWarnings("unchecked")
@Test
public void multipleErrorRace() {
for (int i = 0; i < 500; i++) {
List<Throwable> errors = TestHelper.trackPluginErrors();
try {
final Subject<Integer> ps1 = PublishSubject.create();
final Subject<Integer> ps2 = PublishSubject.create();
Single.ambArray(ps1.singleOrError(), ps2.singleOrError()).test();
final TestException ex = new TestException();
Runnable r1 = new Runnable() {
@Override
public void run() {
ps1.onError(ex);
}
};
Runnable r2 = new Runnable() {
@Override
public void run() {
ps2.onError(ex);
}
};
TestHelper.race(r1, r2, Schedulers.single());
if (!errors.isEmpty()) {
TestHelper.assertUndeliverable(errors, 0, TestException.class);
}
} finally {
RxJavaPlugins.reset();
}
}
}
@SuppressWarnings("unchecked")
@Test
public void successErrorRace() {
for (int i = 0; i < 500; i++) {
List<Throwable> errors = TestHelper.trackPluginErrors();
try {
final Subject<Integer> ps1 = PublishSubject.create();
final Subject<Integer> ps2 = PublishSubject.create();
Single.ambArray(ps1.singleOrError(), ps2.singleOrError()).test();
final TestException ex = new TestException();
Runnable r1 = new Runnable() {
@Override
public void run() {
ps1.onNext(1);
ps1.onComplete();
}
};
Runnable r2 = new Runnable() {
@Override
public void run() {
ps2.onError(ex);
}
};
TestHelper.race(r1, r2, Schedulers.single());
if (!errors.isEmpty()) {
TestHelper.assertUndeliverable(errors, 0, TestException.class);
}
} finally {
RxJavaPlugins.reset();
}
}
}
@Test
public void manySources() {
Single<?>[] sources = new Single[32];
Arrays.fill(sources, Single.never());
sources[31] = Single.just(31);
Single.amb(Arrays.asList(sources))
.test()
.assertResult(31);
}
@Test
public void ambWithOrder() {
Single<Integer> error = Single.error(new RuntimeException());
Single.just(1).ambWith(error).test().assertValue(1);
}
@SuppressWarnings("unchecked")
@Test
public void ambIterableOrder() {
Single<Integer> error = Single.error(new RuntimeException());
Single.amb(Arrays.asList(Single.just(1), error)).test().assertValue(1);
}
@SuppressWarnings("unchecked")
@Test
public void ambArrayOrder() {
Single<Integer> error = Single.error(new RuntimeException());
Single.ambArray(Single.just(1), error).test().assertValue(1);
}
}