| /******************************************************************************* |
| * Copyright (c) 2007, 2010 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 - bugs 221351, 213145, 244098, 246103, 194734, 268688 |
| * Ovidio Mallo - bugs 247741, 301774 |
| ******************************************************************************/ |
| |
| package org.eclipse.core.tests.internal.databinding.beans; |
| |
| import java.beans.PropertyDescriptor; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import junit.framework.Test; |
| import junit.framework.TestSuite; |
| |
| import org.eclipse.core.databinding.beans.BeanProperties; |
| import org.eclipse.core.databinding.beans.BeansObservables; |
| import org.eclipse.core.databinding.beans.IBeanObservable; |
| import org.eclipse.core.databinding.beans.IBeanProperty; |
| import org.eclipse.core.databinding.beans.PojoObservables; |
| import org.eclipse.core.databinding.observable.IObservable; |
| import org.eclipse.core.databinding.observable.IObservableCollection; |
| import org.eclipse.core.databinding.observable.Realm; |
| import org.eclipse.core.databinding.observable.set.IObservableSet; |
| import org.eclipse.core.databinding.observable.set.SetDiff; |
| import org.eclipse.jface.databinding.conformance.MutableObservableSetContractTest; |
| import org.eclipse.jface.databinding.conformance.delegate.AbstractObservableCollectionContractDelegate; |
| import org.eclipse.jface.databinding.conformance.util.ChangeEventTracker; |
| import org.eclipse.jface.databinding.conformance.util.CurrentRealm; |
| import org.eclipse.jface.databinding.conformance.util.SetChangeEventTracker; |
| import org.eclipse.jface.databinding.swt.SWTObservables; |
| import org.eclipse.jface.tests.databinding.AbstractDefaultRealmTestCase; |
| import org.eclipse.swt.widgets.Display; |
| |
| /** |
| * @since 3.3 |
| */ |
| public class JavaBeanObservableSetTest extends AbstractDefaultRealmTestCase { |
| private IObservableSet observableSet; |
| private IBeanObservable beanObservable; |
| private Bean bean; |
| private PropertyDescriptor propertyDescriptor; |
| private String propertyName; |
| private SetChangeEventTracker listener; |
| |
| protected void setUp() throws Exception { |
| super.setUp(); |
| |
| bean = new Bean(); |
| propertyName = "set"; |
| propertyDescriptor = ((IBeanProperty) BeanProperties.set(Bean.class, |
| propertyName)).getPropertyDescriptor(); |
| |
| observableSet = BeansObservables |
| .observeSet(SWTObservables.getRealm(Display.getDefault()), |
| bean, propertyName, Bean.class); |
| beanObservable = (IBeanObservable) observableSet; |
| listener = new SetChangeEventTracker(); |
| } |
| |
| public void testGetObserved() throws Exception { |
| assertEquals(bean, beanObservable.getObserved()); |
| } |
| |
| public void testGetPropertyDescriptor() throws Exception { |
| assertEquals(propertyDescriptor, beanObservable.getPropertyDescriptor()); |
| } |
| |
| public void testGetElementType() throws Exception { |
| assertEquals(Bean.class, observableSet.getElementType()); |
| } |
| |
| public void testRegistersListenerAfterFirstListenerIsAdded() |
| throws Exception { |
| assertFalse(bean.changeSupport.hasListeners(propertyName)); |
| observableSet.addSetChangeListener(new SetChangeEventTracker()); |
| assertTrue(bean.changeSupport.hasListeners(propertyName)); |
| } |
| |
| public void testRemovesListenerAfterLastListenerIsRemoved() |
| throws Exception { |
| observableSet.addSetChangeListener(listener); |
| |
| assertTrue(bean.changeSupport.hasListeners(propertyName)); |
| observableSet.removeSetChangeListener(listener); |
| assertFalse(bean.changeSupport.hasListeners(propertyName)); |
| } |
| |
| public void testFiresChangeEvents() throws Exception { |
| observableSet.addSetChangeListener(listener); |
| assertEquals(0, listener.count); |
| bean.setSet(new HashSet(Arrays.asList(new String[] { "1" }))); |
| assertEquals(1, listener.count); |
| } |
| |
| public void testConstructor_RegisterListeners() throws Exception { |
| bean = new Bean(); |
| observableSet = BeansObservables.observeSet(new CurrentRealm(true), |
| bean, propertyName); |
| assertFalse(bean.hasListeners(propertyName)); |
| ChangeEventTracker.observe(observableSet); |
| assertTrue(bean.hasListeners(propertyName)); |
| } |
| |
| public void testConstructor_SkipsRegisterListeners() throws Exception { |
| bean = new Bean(); |
| |
| observableSet = PojoObservables.observeSet(new CurrentRealm(true), |
| bean, propertyName); |
| assertFalse(bean.hasListeners(propertyName)); |
| ChangeEventTracker.observe(observableSet); |
| assertFalse(bean.hasListeners(propertyName)); |
| } |
| |
| public void testSetBeanProperty_CorrectForNullOldAndNewValues() { |
| // The java bean spec allows the old and new values in a |
| // PropertyChangeEvent to be null, which indicates that an unknown |
| // change occured. |
| |
| // This test ensures that JavaBeanObservableValue fires the correct |
| // value diff even if the bean implementor is lazy :-P |
| |
| Bean bean = new AnnoyingBean(); |
| bean.setSet(Collections.singleton("old")); |
| IObservableSet observable = BeansObservables.observeSet( |
| new CurrentRealm(true), bean, "set"); |
| SetChangeEventTracker tracker = SetChangeEventTracker |
| .observe(observable); |
| bean.setSet(Collections.singleton("new")); |
| assertEquals(1, tracker.count); |
| assertEquals(Collections.singleton("old"), tracker.event.diff |
| .getRemovals()); |
| assertEquals(Collections.singleton("new"), tracker.event.diff |
| .getAdditions()); |
| } |
| |
| public void testModifyObservableSet_FiresSetChange() { |
| Bean bean = new Bean(new HashSet()); |
| IObservableSet observable = BeansObservables.observeSet(bean, "set"); |
| SetChangeEventTracker tracker = SetChangeEventTracker |
| .observe(observable); |
| |
| Object element = new Object(); |
| observable.add(element); |
| |
| assertEquals(1, tracker.count); |
| assertDiff(tracker.event.diff, Collections.EMPTY_SET, Collections |
| .singleton(element)); |
| } |
| |
| public void testSetBeanPropertyOutsideRealm_FiresEventInsideRealm() { |
| Bean bean = new Bean(Collections.EMPTY_SET); |
| CurrentRealm realm = new CurrentRealm(true); |
| IObservableSet observable = BeansObservables.observeSet(realm, bean, |
| "set"); |
| SetChangeEventTracker tracker = SetChangeEventTracker |
| .observe(observable); |
| |
| realm.setCurrent(false); |
| bean.setSet(Collections.singleton("element")); |
| assertEquals(0, tracker.count); |
| |
| realm.setCurrent(true); |
| assertEquals(1, tracker.count); |
| assertDiff(tracker.event.diff, Collections.EMPTY_SET, Collections |
| .singleton("element")); |
| } |
| |
| /** |
| * Makes sure that the set set on the Bean model after changing the |
| * observable set is modifiable (see bugs 285307 and 301774). |
| */ |
| public void testUpdatedBeanSetIsModifiable() { |
| Bean bean = new Bean(new ArrayList()); |
| IObservableSet observable = BeansObservables.observeSet(bean, "set"); |
| |
| observable.add(new Object()); |
| bean.getSet().clear(); |
| } |
| |
| /** |
| * Makes sure that the set set on the Pojo model after changing the |
| * observable set is modifiable (see bugs 285307 and 301774). |
| */ |
| public void testUpdatedPojoSetIsModifiable() { |
| Bean bean = new Bean(new ArrayList()); |
| IObservableSet observable = PojoObservables.observeSet(bean, "set"); |
| |
| observable.add(new Object()); |
| bean.getSet().clear(); |
| } |
| |
| private static void assertDiff(SetDiff diff, Set oldSet, Set newSet) { |
| oldSet = new HashSet(oldSet); // defensive copy in case arg is |
| // unmodifiable |
| diff.applyTo(oldSet); |
| assertEquals("applying diff to list did not produce expected result", |
| newSet, oldSet); |
| } |
| |
| public static Test suite() { |
| TestSuite suite = new TestSuite(JavaBeanObservableSetTest.class |
| .getName()); |
| suite.addTestSuite(JavaBeanObservableSetTest.class); |
| suite.addTest(MutableObservableSetContractTest.suite(new Delegate())); |
| return suite; |
| } |
| |
| private static class Delegate extends |
| AbstractObservableCollectionContractDelegate { |
| public IObservableCollection createObservableCollection(Realm realm, |
| int elementCount) { |
| Bean bean = new Bean(); |
| String propertyName = "set"; |
| |
| IObservableSet set = BeansObservables.observeSet(realm, bean, |
| propertyName, String.class); |
| for (int i = 0; i < elementCount; i++) |
| set.add(createElement(set)); |
| return set; |
| } |
| |
| public Object createElement(IObservableCollection collection) { |
| return new Object(); |
| } |
| |
| public Object getElementType(IObservableCollection collection) { |
| return String.class; |
| } |
| |
| public void change(IObservable observable) { |
| IObservableSet set = (IObservableSet) observable; |
| set.add(createElement(set)); |
| } |
| } |
| } |