- 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();
- }