src/test/java/io/reactivex/rxjava4/internal/observers/BasicFuseableObserverTest.java - 4.x - githubmirror/RxJava

src/test/java/io/reactivex/rxjava4/internal/observers/BasicFuseableObserverTest.java

85 строк3 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.internal.observers;

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

import org.junit.jupiter.api.Test;

import io.reactivex.rxjava4.annotations.Nullable;
import io.reactivex.rxjava4.core.RxJavaTest;
import io.reactivex.rxjava4.disposables.Disposable;
import io.reactivex.rxjava4.observers.TestObserver;
import io.reactivex.rxjava4.testsupport.TestObserverEx;

public class BasicFuseableObserverTest extends RxJavaTest {

    @Test
    public void offer() {
        assertThrows(UnsupportedOperationException.class, () -> {
            TestObserverEx<Integer> to = new TestObserverEx<>();

            var o = new BasicFuseableObserver<Integer, Integer>(to) /* NFI */ {
                @Nullable
                @Override
                public Integer poll() throws Exception {
                    return null;
                }

                @Override
                public int requestFusion(int mode) {
                    return 0;
                }

                @Override
                public void onNext(Integer value) {
                }

                @Override
                protected boolean beforeDownstream() {
                    return false;
                }
            };
            o.onSubscribe(Disposable.disposed());

            to.assertNotSubscribed();

            o.offer(1);
        });
    }

    @Test
    public void offer2() {
        assertThrows(UnsupportedOperationException.class, () -> {
            var o = new BasicFuseableObserver<Integer, Integer>(new TestObserver<>()) {
                @Nullable
                @Override
                public Integer poll() throws Exception {
                    return null;
                }

                @Override
                public int requestFusion(int mode) {
                    return 0;
                }

                @Override
                public void onNext(Integer value) {
                }
            };

            o.offer(1, 2);
        });
    }
}