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/*******************************************************************************
* Copyright (c) 2007-2008 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 - bug 247741
******************************************************************************/
package org.eclipse.core.tests.internal.databinding.beans;
import java.beans.PropertyDescriptor;
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"));
}
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));
}
}
}
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