/*
* Copyright 2005 the original author or authors.
- *
+ *
* 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 org.wamblee.observer;
-import static org.mockito.Mockito.*;
+import junit.framework.TestCase;
+
+import org.mockito.InOrder;
+import static org.mockito.Mockito.*;
import java.util.ArrayList;
import java.util.List;
-import org.mockito.InOrder;
-
-import junit.framework.TestCase;
/**
* Test of the observer pattern implementation.
- *
+ *
* @author Erik Brakkee
*/
public class ObservableTest extends TestCase {
+ private static final int SUBSCRIBER_COUNT = 100;
+ private static final String UPDATE = "send";
+ private Integer observed;
+ private Observable<Integer, String> observable;
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see junit.framework.TestCase#setUp()
+ */
+ @Override
+ protected void setUp() throws Exception {
+ super.setUp();
+ observed = new Integer(1);
+ observable = new Observable<Integer, String>(observed,
+ new DefaultObserverNotifier());
+ }
+
+ /**
+ * Tests subscription and notification of one subscriber.
+ */
+ public void testOneObserver() {
+ final Observer mockObserver = mock(Observer.class);
+ InOrder order = inOrder(mockObserver);
+
+ long subscription = observable.subscribe(mockObserver);
+
+ assertEquals(1, observable.getObserverCount());
+
+ final String message = "hallo";
+ observable.send(message);
+
+ order.verify(mockObserver).send(observed, message);
+ verifyNoMoreInteractions(mockObserver);
+
+ observable.unsubscribe(subscription);
+ assertEquals(0, observable.getObserverCount());
+
+ observable.send(message);
+ verifyNoMoreInteractions(mockObserver);
+ }
+
+ /**
+ * Subscribes many susbcribers and sends notifications to subscribers.
+ * Verifies that unique subscription number are returned. Also verifies that
+ * the correct subscribers are notfied.
+ */
+ public void testManySubscribers() {
+ final int nsubscribers = SUBSCRIBER_COUNT;
+ final Observer[] mocks = new Observer[nsubscribers];
+ final InOrder[] order = new InOrder[nsubscribers];
+
+ List<Long> subscriptions = new ArrayList<Long>();
+
+ for (int i = 0; i < nsubscribers; i++) {
+ mocks[i] = mock(Observer.class);
+ order[i] = inOrder(mocks[i]);
+
+ long subscription = observable.subscribe(mocks[i]);
+ assertTrue(subscriptions.add(subscription));
+ }
+
+ assertEquals(nsubscribers, observable.getObserverCount());
+
+ final String message = "hallo";
+
+ observable.send(message);
+
+ for (int i = 0; i < nsubscribers; i++) {
+ order[i].verify(mocks[i]).send(observed, message);
+ }
+
+ for (int i = nsubscribers / 2; i < nsubscribers; i++) {
+ observable.unsubscribe(subscriptions.get(i));
+ }
+
+ assertEquals(nsubscribers - (nsubscribers - (nsubscribers / 2)),
+ observable.getObserverCount());
+
+ final String message2 = "blabla";
+
+ observable.send(message2);
+
+ for (int i = 0; i < (nsubscribers / 2); i++) {
+ order[i].verify(mocks[i]).send(observed, message2);
+ }
+
+ for (int i = nsubscribers / 2; i < nsubscribers; i++) {
+ verifyNoMoreInteractions(mocks[i]);
+ }
+ }
+
+ /**
+ * Subscribes and then unsubscribes with a wrong id. Verifies that
+ * IllegalArgumentException is thrown.
+ *
+ */
+ public void testUnsubscribeWithWrongSubscription() {
+ Observer<Integer, String> observer = mock(Observer.class);
+
+ long subscription = observable.subscribe(observer);
+
+ assertEquals(1, observable.getObserverCount());
+
+ try {
+ observable.unsubscribe(subscription + 1);
+ } catch (IllegalArgumentException e) {
+ return; // ok
+ }
- private static final int SUBSCRIBER_COUNT = 100;
-
- private static final String UPDATE = "send";
-
- private Integer observed;
- private Observable<Integer, String> observable;
-
- /*
- * (non-Javadoc)
- *
- * @see junit.framework.TestCase#setUp()
- */
- @Override
- protected void setUp() throws Exception {
- super.setUp();
- observed = new Integer(1);
- observable = new Observable<Integer, String>(observed,
- new DefaultObserverNotifier());
- }
-
- /**
- * Tests subscription and notification of one subscriber.
- */
- public void testOneObserver() {
- final Observer mockObserver = mock(Observer.class);
- InOrder order = inOrder(mockObserver);
-
- long subscription = observable.subscribe(mockObserver);
-
- assertEquals(1, observable.getObserverCount());
-
- final String message = "hallo";
- observable.send(message);
-
- order.verify(mockObserver).send(observed, message);
- verifyNoMoreInteractions(mockObserver);
-
- observable.unsubscribe(subscription);
- assertEquals(0, observable.getObserverCount());
-
- observable.send(message);
- verifyNoMoreInteractions(mockObserver);
- }
-
- /**
- * Subscribes many susbcribers and sends notifications to subscribers.
- * Verifies that unique subscription number are returned. Also verifies that
- * the correct subscribers are notfied.
- */
- public void testManySubscribers() {
- final int nsubscribers = SUBSCRIBER_COUNT;
- final Observer[] mocks = new Observer[nsubscribers];
- final InOrder[] order = new InOrder[nsubscribers];
-
- List<Long> subscriptions = new ArrayList<Long>();
- for (int i = 0; i < nsubscribers; i++) {
- mocks[i] = mock(Observer.class);
- order[i] = inOrder(mocks[i]);
- long subscription = observable.subscribe(mocks[i]);
- assertTrue(subscriptions.add(subscription));
- }
-
- assertEquals(nsubscribers, observable.getObserverCount());
-
- final String message = "hallo";
-
- observable.send(message);
- for (int i = 0; i < nsubscribers; i++) {
- order[i].verify(mocks[i]).send(observed, message);
- }
-
- for (int i = nsubscribers / 2; i < nsubscribers; i++) {
- observable.unsubscribe(subscriptions.get(i));
- }
- assertEquals(nsubscribers - (nsubscribers - nsubscribers / 2),
- observable.getObserverCount());
-
- final String message2 = "blabla";
-
- observable.send(message2);
- for (int i = 0; i < nsubscribers / 2; i++) {
- order[i].verify(mocks[i]).send(observed, message2);
- }
- for (int i = nsubscribers/2; i < nsubscribers; i++) {
- verifyNoMoreInteractions(mocks[i]);
- }
-
- }
-
- /**
- * Subscribes and then unsubscribes with a wrong id. Verifies that
- * IllegalArgumentException is thrown.
- *
- */
- public void testUnsubscribeWithWrongSubscription() {
- Observer<Integer, String> observer = mock(Observer.class);
-
- long subscription = observable.subscribe(observer);
-
- assertEquals(1, observable.getObserverCount());
-
- try {
- observable.unsubscribe(subscription + 1);
- } catch (IllegalArgumentException e) {
- return; // ok
- }
- fail();
- }
+ fail();
+ }
}
git://wamblee.org / utils / blobdiff