src/test/java/io/reactivex/rxjava4/parallel/ParallelReduceFullTest.java - 4.x - githubmirror/RxJava

src/test/java/io/reactivex/rxjava4/parallel/ParallelReduceFullTest.java
142 строки4 KB
David Karnok
4.x: Convert from JUnit 4 to JUnit 6 (#8202)
30 июн 2026, 12:01
30 июн 2026, 12:01531388f
/*
 * 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.rxjava4.parallel;

import static org.junit.jupiter.api.Assertions.*;

import java.io.IOException;
import java.util.List;

import org.junit.jupiter.api.Test;

import io.reactivex.rxjava4.core.*;
import io.reactivex.rxjava4.exceptions.TestException;
import io.reactivex.rxjava4.plugins.RxJavaPlugins;
import io.reactivex.rxjava4.processors.PublishProcessor;
import io.reactivex.rxjava4.subscribers.TestSubscriber;
import io.reactivex.rxjava4.testsupport.TestHelper;

public class ParallelReduceFullTest extends RxJavaTest {

    @Test
    public void cancel() {
        PublishProcessor<Integer> pp = PublishProcessor.create();

        TestSubscriber<Integer> ts = pp
        .parallel()
        .reduce(Integer::sum)
        .test();

        assertTrue(pp.hasSubscribers());

        ts.cancel();

        assertFalse(pp.hasSubscribers());
    }

    @Test
    public void error() {
        List<Throwable> errors = TestHelper.trackPluginErrors();

        try {
            Flowable.<Integer>error(new TestException())
            .parallel()
            .reduce(Integer::sum)
            .test()
            .assertFailure(TestException.class);

            assertTrue(errors.isEmpty());
        } finally {
            RxJavaPlugins.reset();
        }
    }

    @Test
    public void error2() {
        List<Throwable> errors = TestHelper.trackPluginErrors();

        try {
            ParallelFlowable.fromArray(Flowable.<Integer>error(new IOException()), Flowable.<Integer>error(new TestException()))
            .reduce(Integer::sum)
            .test()
            .assertFailure(IOException.class);

            TestHelper.assertUndeliverable(errors, 0, TestException.class);
        } finally {
            RxJavaPlugins.reset();
        }
    }

    @Test
    public void empty() {
        Flowable.<Integer>empty()
        .parallel()
        .reduce(Integer::sum)
        .test()
        .assertResult();
    }

    @Test
    public void doubleError() {
        List<Throwable> errors = TestHelper.trackPluginErrors();
        try {
            new ParallelInvalid()
            .reduce((a, b) -> "" + a + b)
            .test()
            .assertFailure(TestException.class);

            assertFalse(errors.isEmpty());
            for (Throwable ex : errors) {
                assertTrue(ex.getCause() instanceof TestException, ex.toString());
            }
        } finally {
            RxJavaPlugins.reset();
        }
    }

    @Test
    public void reducerCrash() {
        Flowable.range(1, 4)
        .parallel(2)
        .reduce((a, b) -> {
            if (b == 3) {
                throw new TestException();
            }
            return a + b;
        })
        .test()
        .assertFailure(TestException.class);
    }

    @Test
    public void reducerCrash2() {
        Flowable.range(1, 4)
        .parallel(2)
        .reduce((a, b) -> {
            if (a == 1 + 3) {
                throw new TestException();
            }
            return a + b;
        })
        .test()
        .assertFailure(TestException.class);
    }

    @Test
    public void doubleOnSubscribe() {
        TestHelper.checkDoubleOnSubscribeParallelToFlowable(
                pf -> pf.reduce((a, _) -> a)
        );
    }
}