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ObserversTest.java
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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.lang.reflect.*;
import java.util.concurrent.atomic.*;
import org.junit.Test;
import rx.exceptions.*;
import rx.functions.*;
public class ObserversTest {
@Test
public void testNotInstantiable() {
try {
Constructor<?> c = Observers.class.getDeclaredConstructor();
c.setAccessible(true);
Object instance = c.newInstance();
fail("Could instantiate Actions! " + instance);
} catch (NoSuchMethodException ex) {
ex.printStackTrace();
} catch (InvocationTargetException ex) {
ex.printStackTrace();
} catch (InstantiationException ex) {
ex.printStackTrace();
} catch (IllegalAccessException ex) {
ex.printStackTrace();
}
}
@Test
public void testEmptyOnErrorNotImplemented() {
try {
Observers.empty().onError(new TestException());
fail("OnErrorNotImplementedException not thrown!");
} catch (OnErrorNotImplementedException ex) {
if (!(ex.getCause() instanceof TestException)) {
fail("TestException not wrapped, instead: " + ex.getCause());
}
}
}
@Test
public void testCreate1OnErrorNotImplemented() {
try {
Observers.create(Actions.empty()).onError(new TestException());
fail("OnErrorNotImplementedException not thrown!");
} catch (OnErrorNotImplementedException ex) {
if (!(ex.getCause() instanceof TestException)) {
fail("TestException not wrapped, instead: " + ex.getCause());
}
}
}
@Test(expected = IllegalArgumentException.class)
public void testCreate1Null() {
Observers.create(null);
}
@Test(expected = IllegalArgumentException.class)
public void testCreate2Null() {
Action1<Throwable> throwAction = Actions.empty();
Observers.create(null, throwAction);
}
@Test(expected = IllegalArgumentException.class)
public void testCreate3Null() {
Observers.create(Actions.empty(), null);
}
@Test(expected = IllegalArgumentException.class)
public void testCreate4Null() {
Action1<Throwable> throwAction = Actions.empty();
Observers.create(null, throwAction, Actions.empty());
}
@Test(expected = IllegalArgumentException.class)
public void testCreate5Null() {
Observers.create(Actions.empty(), null, Actions.empty());
}
@Test(expected = IllegalArgumentException.class)
public void testCreate6Null() {
Action1<Throwable> throwAction = Actions.empty();
Observers.create(Actions.empty(), throwAction, null);
}
@Test
public void testCreate1Value() {
final AtomicInteger value = new AtomicInteger();
Action1<Integer> action = new Action1<Integer>() {
@Override
public void call(Integer t) {
value.set(t);
}
};
Observers.create(action).onNext(1);
assertEquals(1, value.get());
}
@Test
public void testCreate2Value() {
final AtomicInteger value = new AtomicInteger();
Action1<Integer> action = new Action1<Integer>() {
@Override
public void call(Integer t) {
value.set(t);
}
};
Action1<Throwable> throwAction = Actions.empty();
Observers.create(action, throwAction).onNext(1);
assertEquals(1, value.get());
}
@Test
public void testCreate3Value() {
final AtomicInteger value = new AtomicInteger();
Action1<Integer> action = new Action1<Integer>() {
@Override
public void call(Integer t) {
value.set(t);
}
};
Action1<Throwable> throwAction = Actions.empty();
Observers.create(action, throwAction, Actions.empty()).onNext(1);
assertEquals(1, value.get());
}
@Test
public void testError2() {
final AtomicReference<Throwable> value = new AtomicReference<Throwable>();
Action1<Throwable> action = new Action1<Throwable>() {
@Override
public void call(Throwable t) {
value.set(t);
}
};
TestException exception = new TestException();
Observers.create(Actions.empty(), action).onError(exception);
assertEquals(exception, value.get());
}
@Test
public void testError3() {
final AtomicReference<Throwable> value = new AtomicReference<Throwable>();
Action1<Throwable> action = new Action1<Throwable>() {
@Override
public void call(Throwable t) {
value.set(t);
}
};
TestException exception = new TestException();
Observers.create(Actions.empty(), action, Actions.empty()).onError(exception);
assertEquals(exception, value.get());
}
@Test
public void testCompleted() {
Action0 action = mock(Action0.class);
Action1<Throwable> throwAction = Actions.empty();
Observers.create(Actions.empty(), throwAction, action).onCompleted();
verify(action).call();
}
@Test
public void testEmptyCompleted() {
Observers.create(Actions.empty()).onCompleted();
Action1<Throwable> throwAction = Actions.empty();
Observers.create(Actions.empty(), throwAction).onCompleted();
}
}