| /******************************************************************************* |
| * Copyright (c) 2008, 2009 Matthew Hall 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: |
| * Matthew Hall - initial API and implementation (bug 247394) |
| * Matthew Hall - bug 266754 |
| ******************************************************************************/ |
| |
| package org.eclipse.core.tests.databinding.observable.map; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.beans.PropertyChangeEvent; |
| import java.beans.PropertyChangeListener; |
| |
| import org.eclipse.core.databinding.observable.ChangeEvent; |
| import org.eclipse.core.databinding.observable.IChangeListener; |
| import org.eclipse.core.databinding.observable.map.ComputedObservableMap; |
| import org.eclipse.core.databinding.observable.set.IObservableSet; |
| import org.eclipse.core.databinding.observable.set.WritableSet; |
| import org.eclipse.core.tests.internal.databinding.beans.Bean; |
| import org.eclipse.jface.databinding.conformance.util.ChangeEventTracker; |
| import org.eclipse.jface.tests.databinding.AbstractDefaultRealmTestCase; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| /** |
| * @since 3.2 |
| * |
| */ |
| public class ComputedObservableMapTest extends AbstractDefaultRealmTestCase { |
| private IObservableSet keySet; |
| private ComputedObservableMapStub map; |
| private String propertyName; |
| private Bean bean; |
| |
| @Before |
| public void setUp() throws Exception { |
| super.setUp(); |
| keySet = new WritableSet(); |
| map = new ComputedObservableMapStub(keySet); |
| propertyName = "value"; |
| bean = new Bean("a"); |
| } |
| |
| @Test |
| public void testGet_ElementNotInKeySet() { |
| assertNull(map.get(bean)); |
| } |
| |
| @Test |
| public void testGet_ElementInKeySet() { |
| keySet.add(bean); |
| assertEquals("a", map.get(bean)); |
| } |
| |
| @Test |
| public void testPut_ElementNotInKeySet() { |
| assertNull(map.put(bean, "b")); |
| assertEquals("a", bean.getValue()); |
| } |
| |
| @Test |
| public void testPut_ElementInKeySet() { |
| keySet.add(bean); |
| assertEquals("a", map.put(bean, "b")); |
| assertEquals("b", map.get(bean)); |
| } |
| |
| @Test |
| public void testAddToKeySet_BeforeFirstListenerAdded_DoesNotAddListenerToKey() { |
| assertFalse(bean.hasListeners(propertyName)); |
| keySet.add(bean); |
| assertFalse(bean.hasListeners(propertyName)); |
| } |
| |
| @Test |
| public void testAddToKeySet_AfterFirstListenerAdded_AddsListenerToKey() { |
| ChangeEventTracker.observe(map); |
| assertFalse(bean.hasListeners(propertyName)); |
| keySet.add(bean); |
| assertTrue(bean.hasListeners(propertyName)); |
| } |
| |
| @Test |
| public void testRemoveFromKeySet_RemovesListenersFromKey() { |
| ChangeEventTracker.observe(map); |
| keySet.add(bean); |
| assertTrue(bean.hasListeners(propertyName)); |
| keySet.remove(bean); |
| assertFalse(bean.hasListeners(propertyName)); |
| } |
| |
| @Test |
| public void testRemoveLastListener_DoNotDiscardKeySet() { |
| IChangeListener listener = new IChangeListener() { |
| @Override |
| public void handleChange(ChangeEvent event) { |
| // do nothing |
| } |
| }; |
| map.addChangeListener(listener); // first listener added |
| map.removeChangeListener(listener); // last listener removed |
| keySet.add(bean); |
| assertEquals(1, map.size()); |
| } |
| |
| @Test |
| public void testDispose_RemoveListenersFromKeySetElements() { |
| ChangeEventTracker.observe(map); |
| keySet.add(bean); |
| assertTrue(bean.hasListeners(propertyName)); |
| map.dispose(); |
| assertFalse(bean.hasListeners(propertyName)); |
| } |
| |
| @Test |
| public void testDisposeKeySet_DisposesMap() { |
| assertFalse(map.isDisposed()); |
| keySet.dispose(); |
| assertTrue(map.isDisposed()); |
| } |
| |
| @Test |
| public void testDisposeKeySet_RemoveListenersFromKeySetElements() { |
| ChangeEventTracker.observe(map); |
| keySet.add(bean); |
| assertTrue(bean.hasListeners(propertyName)); |
| keySet.dispose(); |
| assertFalse(bean.hasListeners(propertyName)); |
| } |
| |
| static class ComputedObservableMapStub extends ComputedObservableMap { |
| private PropertyChangeListener listener = new PropertyChangeListener() { |
| @Override |
| public void propertyChange(PropertyChangeEvent evt) { |
| fireSingleChange(evt.getSource(), evt.getOldValue(), evt |
| .getNewValue()); |
| } |
| }; |
| |
| ComputedObservableMapStub(IObservableSet keySet) { |
| super(keySet); |
| } |
| |
| @Override |
| protected Object doGet(Object key) { |
| return ((Bean) key).getValue(); |
| } |
| |
| @Override |
| protected Object doPut(Object key, Object value) { |
| Object result = doGet(key); |
| ((Bean) key).setValue((String) value); |
| return result; |
| } |
| |
| @Override |
| protected void hookListener(Object addedKey) { |
| ((Bean) addedKey).addPropertyChangeListener(listener); |
| } |
| |
| @Override |
| protected void unhookListener(Object removedKey) { |
| ((Bean) removedKey).removePropertyChangeListener(listener); |
| } |
| } |
| } |