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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.observers;

import static org.junit.Assert.*;

import static org.mockito.Mockito.*;

import java.util.*;

import org.junit.*;

import org.junit.rules.ExpectedException;

import org.mockito.InOrder;

import rx.Notification;

import rx.Observable;

import rx.Observer;

import rx.exceptions.TestException;

import rx.subjects.PublishSubject;

@Deprecated

public class TestObserverTest {

@Rule

public ExpectedException thrown = ExpectedException.none();

@Test

public void testAssert() {

Observable<Integer> oi = Observable.from(Arrays.asList(1, 2));

TestObserver<Integer> o = new TestObserver<Integer>();

oi.subscribe(o);

o.assertReceivedOnNext(Arrays.asList(1, 2));

assertEquals(2, o.getOnNextEvents().size());

o.assertTerminalEvent();

}

@Test

public void testAssertNotMatchCount() {

Observable<Integer> oi = Observable.from(Arrays.asList(1, 2));

TestObserver<Integer> o = new TestObserver<Integer>();

oi.subscribe(o);

thrown.expect(AssertionError.class);

thrown.expectMessage("Number of items does not match. Provided: 1 Actual: 2.\n" +

"Provided values: [1]\n" +

"Actual values: [1, 2]");

o.assertReceivedOnNext(Arrays.asList(1));

assertEquals(2, o.getOnNextEvents().size());

o.assertTerminalEvent();

}

@Test

public void testAssertNotMatchValue() {

Observable<Integer> oi = Observable.from(Arrays.asList(1, 2));

TestObserver<Integer> o = new TestObserver<Integer>();

oi.subscribe(o);

thrown.expect(AssertionError.class);

thrown.expectMessage("Value at index: 1 expected to be [3] (Integer) but was: [2] (Integer)");

o.assertReceivedOnNext(Arrays.asList(1, 3));

assertEquals(2, o.getOnNextEvents().size());

o.assertTerminalEvent();

}

@Test

public void testAssertTerminalEventNotReceived() {

PublishSubject<Integer> p = PublishSubject.create();

TestObserver<Integer> o = new TestObserver<Integer>();

p.subscribe(o);

p.onNext(1);

p.onNext(2);

thrown.expect(AssertionError.class);

thrown.expectMessage("No terminal events received.");

o.assertReceivedOnNext(Arrays.asList(1, 2));

assertEquals(2, o.getOnNextEvents().size());

o.assertTerminalEvent();

}

@Test

public void testWrappingMock() {

Observable<Integer> oi = Observable.from(Arrays.asList(1, 2));

@SuppressWarnings("unchecked")

Observer<Integer> mockObserver = mock(Observer.class);

oi.subscribe(new TestObserver<Integer>(mockObserver));

InOrder inOrder = inOrder(mockObserver);

inOrder.verify(mockObserver, times(1)).onNext(1);

inOrder.verify(mockObserver, times(1)).onNext(2);

inOrder.verify(mockObserver, times(1)).onCompleted();

inOrder.verifyNoMoreInteractions();

}

@Test

public void testWrappingMockWhenUnsubscribeInvolved() {

Observable<Integer> oi = Observable.from(Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9)).take(2);

@SuppressWarnings("unchecked")

Observer<Integer> mockObserver = mock(Observer.class);

oi.subscribe(new TestObserver<Integer>(mockObserver));

InOrder inOrder = inOrder(mockObserver);

inOrder.verify(mockObserver, times(1)).onNext(1);

inOrder.verify(mockObserver, times(1)).onNext(2);

inOrder.verify(mockObserver, times(1)).onCompleted();

inOrder.verifyNoMoreInteractions();

}

@Test

public void testErrorSwallowed() {

Observable.error(new RuntimeException()).subscribe(new TestObserver<Object>());

}

@Test

public void testGetEvents() {

TestObserver<Integer> to = new TestObserver<Integer>();

to.onNext(1);

to.onNext(2);

assertEquals(Arrays.<Object>asList(Arrays.asList(1, 2),

Collections.emptyList(),

Collections.emptyList()), to.getEvents());

to.onCompleted();

assertEquals(Arrays.<Object>asList(Arrays.asList(1, 2), Collections.emptyList(),

Collections.singletonList(Notification.createOnCompleted())), to.getEvents());

TestException ex = new TestException();

TestObserver<Integer> to2 = new TestObserver<Integer>();

to2.onNext(1);

to2.onNext(2);

assertEquals(Arrays.<Object>asList(Arrays.asList(1, 2),

Collections.emptyList(),

Collections.emptyList()), to2.getEvents());

to2.onError(ex);

assertEquals(Arrays.<Object>asList(

Arrays.asList(1, 2),

Collections.singletonList(ex),

Collections.emptyList()),

to2.getEvents());

}

@Test

public void testNullExpected() {

TestObserver<Integer> to = new TestObserver<Integer>();

to.onNext(1);

try {

to.assertReceivedOnNext(Arrays.asList((Integer)null));

} catch (AssertionError ex) {

// this is expected

return;

}

fail("Null element check assertion didn't happen!");

}

@Test

public void testNullActual() {

TestObserver<Integer> to = new TestObserver<Integer>();

to.onNext(null);

try {

to.assertReceivedOnNext(Arrays.asList(1));

} catch (AssertionError ex) {

// this is expected

return;

}

fail("Null element check assertion didn't happen!");

}

@Test

public void testTerminalErrorOnce() {

TestObserver<Integer> to = new TestObserver<Integer>();

to.onError(new TestException());

to.onError(new TestException());

try {

to.assertTerminalEvent();

} catch (AssertionError ex) {

// this is expected

return;

}

fail("Failed to report multiple onError terminal events!");

}

@Test

public void testTerminalCompletedOnce() {

TestObserver<Integer> to = new TestObserver<Integer>();

to.onCompleted();

to.onCompleted();

try {

to.assertTerminalEvent();

} catch (AssertionError ex) {

// this is expected

return;

}

fail("Failed to report multiple onError terminal events!");

}

@Test

public void testTerminalOneKind() {

TestObserver<Integer> to = new TestObserver<Integer>();

to.onError(new TestException());

to.onCompleted();

try {

to.assertTerminalEvent();

} catch (AssertionError ex) {

// this is expected

return;

}

fail("Failed to report multiple kinds of events!");

}

}