* 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 org.jmock.cglib.MockObjectTestCase;
/**
- * Test of the observer pattern implementation.
+ * Test of the observer pattern implementation.
*/
public class ObservableTest extends MockObjectTestCase {
-
+
+ private static final int SUBSCRIBER_COUNT = 100;
+
private static final String UPDATE = "send";
-
- private Observable<ObservableTest, String> _observable;
-
- /* (non-Javadoc)
+ private Observable<ObservableTest, String> _observable;
+
+ /*
+ * (non-Javadoc)
+ *
* @see junit.framework.TestCase#setUp()
*/
@Override
protected void setUp() throws Exception {
super.setUp();
-
- _observable = new Observable<ObservableTest, String>(this, new DefaultObserverNotifier());
+
+ _observable = new Observable<ObservableTest, String>(this,
+ new DefaultObserverNotifier());
}
-
+
/**
* Tests subscription and notification of one subscriber.
*/
- public void testOneObserver() {
+ public void testOneObserver() {
Mock mockObserver = mock(Observer.class);
- Observer<ObservableTest,String> observer = (Observer<ObservableTest,String>)mockObserver.proxy();
+ Observer<ObservableTest, String> observer = (Observer<ObservableTest, String>) mockObserver
+ .proxy();
long subscription = _observable.subscribe(observer);
-
- assertEquals(1, _observable.getObserverCount());
-
+
+ assertEquals(1, _observable.getObserverCount());
+
String message = "hallo";
- mockObserver.expects(once()).method(UPDATE).with(same(this), eq(message));
-
+ mockObserver.expects(once()).method(UPDATE).with(same(this),
+ eq(message));
+
_observable.send(message);
- _observable.unsubscribe(subscription);
- assertEquals(0, _observable.getObserverCount());
-
+ _observable.unsubscribe(subscription);
+ assertEquals(0, _observable.getObserverCount());
+
_observable.send(message);
-
+
}
-
-
+
/**
- * Subscribes many susbcribers and sends notifications to subscribers.
- * Verifies that unique subscription number are returned.
- * Also verifies that the correct subscribers are notfied.
+ * 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() {
- int nsubscribers = 100;
+ public void testManySubscribers() {
+ int nsubscribers = SUBSCRIBER_COUNT;
Mock[] mocks = new Mock[nsubscribers];
-
+
List<Long> subscriptions = new ArrayList<Long>();
- for (int i = 0; i < nsubscribers; i++) {
+ for (int i = 0; i < nsubscribers; i++) {
Mock mockObserver = mock(Observer.class);
- Observer<ObservableTest,String> observer = (Observer<ObservableTest,String>)mockObserver.proxy();
+ Observer<ObservableTest, String> observer = (Observer<ObservableTest, String>) mockObserver
+ .proxy();
long subscription = _observable.subscribe(observer);
-
+
mocks[i] = mockObserver;
- assertTrue( subscriptions.add(subscription));
+ assertTrue(subscriptions.add(subscription));
}
-
+
assertEquals(nsubscribers, _observable.getObserverCount());
-
+
String message = "hallo";
- for (int i = 0; i < nsubscribers; i++) {
- mocks[i].expects(once()).method(UPDATE).with(same(this), eq(message));
+ for (int i = 0; i < nsubscribers; i++) {
+ mocks[i].expects(once()).method(UPDATE).with(same(this),
+ eq(message));
}
-
+
_observable.send(message);
-
- for (int i = nsubscribers/2; i < nsubscribers; i++) {
- _observable.unsubscribe(subscriptions.get(i));
+
+ for (int i = nsubscribers / 2; i < nsubscribers; i++) {
+ _observable.unsubscribe(subscriptions.get(i));
}
- assertEquals(nsubscribers - ( nsubscribers - nsubscribers/2), _observable.getObserverCount());
-
- message = "blabla";
- for (int i = 0; i < nsubscribers/2; i++) {
- mocks[i].expects(once()).method(UPDATE).with(same(this), eq(message));
+ assertEquals(nsubscribers - (nsubscribers - nsubscribers / 2),
+ _observable.getObserverCount());
+
+ message = "blabla";
+ for (int i = 0; i < nsubscribers / 2; i++) {
+ mocks[i].expects(once()).method(UPDATE).with(same(this),
+ eq(message));
}
_observable.send(message);
}
+ /**
+ * Subscribes and then unsubscribes with a wrong id. Verifies that
+ * IllegalArgumentException is thrown.
+ *
+ */
+ public void testUnsubscribeWithWrongSubscription() {
+ Mock mockObserver = mock(Observer.class);
+ Observer<ObservableTest, String> observer = (Observer<ObservableTest, String>) mockObserver
+ .proxy();
+ long subscription = _observable.subscribe(observer);
+
+ assertEquals(1, _observable.getObserverCount());
+
+ try {
+ _observable.unsubscribe(subscription + 1);
+ } catch (IllegalArgumentException e) {
+ return; // ok
+ }
+ fail();
+ }
+
}