ObservableCreateTest.java

/**
 * Copyright 2016 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 io.reactivex.internal.operators.observable;

import static org.junit.Assert.assertTrue;

import org.junit.Test;

import io.reactivex.*;
import io.reactivex.disposables.*;
import io.reactivex.exceptions.TestException;

public class ObservableCreateTest {

    @Test(expected = NullPointerException.class)
    public void nullArgument() {
        Observable.create(null);
    }
    
    @Test
    public void basic() {
        final Disposable d = Disposables.empty();
        
        Observable.<Integer>create(new ObservableOnSubscribe<Integer>() {
            @Override
            public void subscribe(ObservableEmitter<Integer> e) throws Exception {
                e.setDisposable(d);
                
                e.onNext(1);
                e.onNext(2);
                e.onNext(3);
                e.onComplete();
                e.onError(new TestException());
                e.onNext(4);
                e.onError(new TestException());
                e.onComplete();
            }
        })
        .test()
        .assertResult(1, 2, 3);
        
        assertTrue(d.isDisposed());
    }
    
    @Test
    public void basicWithError() {
        final Disposable d = Disposables.empty();
        
        Observable.<Integer>create(new ObservableOnSubscribe<Integer>() {
            @Override
            public void subscribe(ObservableEmitter<Integer> e) throws Exception {
                e.setDisposable(d);
                
                e.onNext(1);
                e.onNext(2);
                e.onNext(3);
                e.onError(new TestException());
                e.onComplete();
                e.onNext(4);
                e.onError(new TestException());
            }
        })
        .test()
        .assertFailure(TestException.class, 1, 2, 3);
        
        assertTrue(d.isDisposed());
    }
    
    @Test
    public void basicSerialized() {
        final Disposable d = Disposables.empty();
        
        Observable.<Integer>create(new ObservableOnSubscribe<Integer>() {
            @Override
            public void subscribe(ObservableEmitter<Integer> e) throws Exception {
                e = e.serialize();
                
                e.setDisposable(d);
                
                e.onNext(1);
                e.onNext(2);
                e.onNext(3);
                e.onComplete();
                e.onError(new TestException());
                e.onNext(4);
                e.onError(new TestException());
                e.onComplete();
            }
        })
        .test()
        .assertResult(1, 2, 3);
        
        assertTrue(d.isDisposed());
    }
    
    @Test
    public void basicWithErrorSerialized() {
        final Disposable d = Disposables.empty();
        
        Observable.<Integer>create(new ObservableOnSubscribe<Integer>() {
            @Override
            public void subscribe(ObservableEmitter<Integer> e) throws Exception {
                e = e.serialize();

                e.setDisposable(d);
                
                e.onNext(1);
                e.onNext(2);
                e.onNext(3);
                e.onError(new TestException());
                e.onComplete();
                e.onNext(4);
                e.onError(new TestException());
            }
        })
        .test()
        .assertFailure(TestException.class, 1, 2, 3);
        
        assertTrue(d.isDisposed());
    }

    @Test
    public void wrap() {
        Observable.wrap(new ObservableSource<Integer>() {
            @Override
            public void subscribe(Observer<? super Integer> observer) {
                observer.onSubscribe(Disposables.empty());
                observer.onNext(1);
                observer.onNext(2);
                observer.onNext(3);
                observer.onNext(4);
                observer.onNext(5);
                observer.onComplete();
            }
        })
        .test()
        .assertResult(1, 2, 3, 4, 5);
    }

    @Test
    public void unsafe() {
        Observable.unsafeCreate(new ObservableSource<Integer>() {
            @Override
            public void subscribe(Observer<? super Integer> observer) {
                observer.onSubscribe(Disposables.empty());
                observer.onNext(1);
                observer.onNext(2);
                observer.onNext(3);
                observer.onNext(4);
                observer.onNext(5);
                observer.onComplete();
            }
        })
        .test()
        .assertResult(1, 2, 3, 4, 5);
    }

    @Test(expected = IllegalArgumentException.class)
    public void unsafeWithObservable() {
        Observable.unsafeCreate(Observable.just(1));
    }

}