| /******************************************************************************* |
| * Copyright (c) 2007 Brad Reynolds and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Brad Reynolds - initial API and implementation |
| * Matthew Hall - bug 213145 |
| ******************************************************************************/ |
| |
| package org.eclipse.jface.databinding.conformance; |
| |
| import junit.framework.Test; |
| |
| import org.eclipse.core.databinding.observable.IObservable; |
| import org.eclipse.core.databinding.observable.IStaleListener; |
| import org.eclipse.core.databinding.observable.StaleEvent; |
| import org.eclipse.jface.databinding.conformance.delegate.IObservableContractDelegate; |
| import org.eclipse.jface.databinding.conformance.util.SuiteBuilder; |
| |
| /** |
| * @since 3.3 |
| */ |
| public class ObservableStaleContractTest extends ObservableDelegateTest { |
| private IObservableContractDelegate delegate; |
| private IObservable observable; |
| |
| public ObservableStaleContractTest(IObservableContractDelegate delegate) { |
| this(null, delegate); |
| } |
| |
| public ObservableStaleContractTest(String testName, IObservableContractDelegate delegate) { |
| super(testName, delegate); |
| this.delegate = delegate; |
| } |
| |
| protected void setUp() throws Exception { |
| super.setUp(); |
| |
| observable = getObservable(); |
| } |
| |
| public void testIsStale_TrueWhenStale() throws Exception { |
| delegate.setStale(observable, true); |
| assertTrue(formatFail("When stale isStale() should return true."), observable.isStale()); |
| } |
| |
| public void testIsStale_FalseWhenNotStale() throws Exception { |
| delegate.setStale(observable, false); |
| assertFalse(formatFail("When not stale isStale() should return false."), observable.isStale()); |
| } |
| |
| public void testBecomingStaleFiresStaleEvent() throws Exception { |
| StaleListener listener = new StaleListener(); |
| |
| // precondition |
| ensureStale(observable, false); |
| |
| observable.addStaleListener(listener); |
| delegate.setStale(observable, true); |
| |
| assertEquals(formatFail("When becoming stale listeners should be notified."), 1, listener.count); |
| } |
| |
| public void testStaleEventObservable() throws Exception { |
| StaleListener listener = new StaleListener(); |
| |
| // precondition |
| ensureStale(observable, false); |
| |
| observable.addStaleListener(listener); |
| delegate.setStale(observable, true); |
| |
| StaleEvent event = listener.event; |
| assertNotNull(formatFail("stale event was null"), event); |
| assertEquals(formatFail("When notifying listeners of becoming stale the observable should be the source of the event."), observable, |
| event.getObservable()); |
| } |
| |
| public void testRemoveStaleListener_RemovesListener() throws Exception { |
| StaleListener listener = new StaleListener(); |
| |
| observable.addStaleListener(listener); |
| ensureStale(observable, false); |
| delegate.setStale(observable, true); |
| |
| // precondition check |
| assertEquals(formatFail("set stale did not notify listeners"), 1, listener.count); |
| |
| observable.removeStaleListener(listener); |
| ensureStale(observable, false); |
| delegate.setStale(observable, true); |
| |
| assertEquals(formatFail("Once removed stale listeners should not be notified of becoming stale."), 1, |
| listener.count); |
| } |
| |
| public void testStaleListenersAreNotNotifiedWhenObservableIsNoLongerStale() |
| throws Exception { |
| ensureStale(observable, true); |
| |
| StaleListener listener = new StaleListener(); |
| observable.addStaleListener(listener); |
| delegate.setStale(observable, false); |
| |
| assertEquals(formatFail("Stale listeners should not be notified when the stale state changes from true to false."), 0, |
| listener.count); |
| } |
| |
| public void testObservableRealmIsCurrentOnStale() throws Exception { |
| ensureStale(observable, false); |
| |
| StaleListener listener = new StaleListener(); |
| observable.addStaleListener(listener); |
| delegate.setStale(observable, true); |
| |
| assertTrue(formatFail("When notifying listeners of becoming stale the observable's realm should be the current realm."), |
| listener.isCurrentRealm); |
| } |
| |
| /** |
| * Ensures that stale is set to the provided state. Will throw an |
| * AssertionFailedError if setting of the state is unsuccessful. |
| * |
| * @param observable |
| * @param stale |
| */ |
| private void ensureStale(IObservable observable, boolean stale) { |
| if (observable.isStale() != stale) { |
| delegate.setStale(observable, stale); |
| } |
| |
| assertEquals(stale, observable.isStale()); |
| } |
| |
| /* package */static class StaleListener implements IStaleListener { |
| int count; |
| |
| StaleEvent event; |
| |
| boolean isCurrentRealm; |
| |
| public void handleStale(StaleEvent staleEvent) { |
| count++; |
| this.event = staleEvent; |
| this.isCurrentRealm = staleEvent.getObservable().getRealm() |
| .isCurrent(); |
| } |
| } |
| |
| public static Test suite(IObservableContractDelegate delegate) { |
| return new SuiteBuilder().addObservableContractTest( |
| ObservableStaleContractTest.class, delegate).build(); |
| } |
| } |