| /******************************************************************************* |
| * Copyright (c) 2007 Oracle. 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: |
| * Oracle - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.jpt.utility.tests.internal.model.value; |
| |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.Vector; |
| import junit.framework.TestCase; |
| import org.eclipse.jpt.utility.internal.CollectionTools; |
| import org.eclipse.jpt.utility.internal.Filter; |
| import org.eclipse.jpt.utility.internal.model.AbstractModel; |
| import org.eclipse.jpt.utility.internal.model.event.CollectionChangeEvent; |
| import org.eclipse.jpt.utility.internal.model.listener.CollectionChangeListener; |
| import org.eclipse.jpt.utility.internal.model.value.CollectionValueModel; |
| import org.eclipse.jpt.utility.internal.model.value.FilteringCollectionValueModel; |
| import org.eclipse.jpt.utility.internal.model.value.SimpleCollectionValueModel; |
| import org.eclipse.jpt.utility.tests.internal.TestTools; |
| |
| public class FilteringCollectionValueModelTests extends TestCase { |
| private SimpleCollectionValueModel collectionHolder; |
| CollectionChangeEvent addEvent; |
| CollectionChangeEvent removeEvent; |
| CollectionChangeEvent collectionClearedEvent; |
| CollectionChangeEvent collectionChangedEvent; |
| |
| private CollectionValueModel filteredCollectionHolder; |
| CollectionChangeEvent filteredAddEvent; |
| CollectionChangeEvent filteredRemoveEvent; |
| CollectionChangeEvent filteredCollectionClearedEvent; |
| CollectionChangeEvent filteredCollectionChangedEvent; |
| |
| public FilteringCollectionValueModelTests(String name) { |
| super(name); |
| } |
| |
| @Override |
| protected void setUp() throws Exception { |
| super.setUp(); |
| this.collectionHolder = new SimpleCollectionValueModel(buildCollection()); |
| this.filteredCollectionHolder = new FilteringCollectionValueModel(this.collectionHolder, this.buildFilter()); |
| } |
| |
| private Collection buildCollection() { |
| Collection collection = new Vector(); |
| collection.add("foo"); |
| return collection; |
| } |
| |
| private Filter buildFilter() { |
| return new Filter() { |
| public boolean accept(Object o) { |
| return ((String) o).startsWith("b"); |
| } |
| }; |
| } |
| |
| @Override |
| protected void tearDown() throws Exception { |
| TestTools.clear(this); |
| super.tearDown(); |
| } |
| |
| public void testIterator() { |
| // add a listener to "activate" the wrapper |
| this.filteredCollectionHolder.addCollectionChangeListener(CollectionValueModel.VALUES, this.buildFilteredListener()); |
| |
| assertEquals("foo", ((Iterator) this.collectionHolder.iterator()).next()); |
| assertFalse(((Iterator) this.filteredCollectionHolder.iterator()).hasNext()); |
| |
| this.collectionHolder.add("bar"); |
| Iterator collectionHolderValue = (Iterator) this.collectionHolder.iterator(); |
| assertEquals("foo", collectionHolderValue.next()); |
| assertEquals("bar", collectionHolderValue.next()); |
| assertTrue(((Iterator) this.filteredCollectionHolder.iterator()).hasNext()); |
| assertEquals("bar", ((Iterator) this.filteredCollectionHolder.iterator()).next()); |
| |
| this.collectionHolder.remove("bar"); |
| assertEquals("foo", ((Iterator) this.collectionHolder.iterator()).next()); |
| assertFalse(((Iterator) this.filteredCollectionHolder.iterator()).hasNext()); |
| |
| this.collectionHolder.remove("foo"); |
| assertFalse(((Iterator) this.collectionHolder.iterator()).hasNext()); |
| assertFalse(((Iterator) this.filteredCollectionHolder.iterator()).hasNext()); |
| |
| this.collectionHolder.add("foo"); |
| assertEquals("foo", ((Iterator) this.collectionHolder.iterator()).next()); |
| assertFalse(((Iterator) this.filteredCollectionHolder.iterator()).hasNext()); |
| } |
| |
| public void testSetValue() { |
| // add a listener to "activate" the wrapper |
| this.filteredCollectionHolder.addCollectionChangeListener(CollectionValueModel.VALUES, this.buildFilteredListener()); |
| |
| Collection newCollection = new Vector(); |
| newCollection.add("fox"); |
| newCollection.add("baz"); |
| |
| ((SimpleCollectionValueModel) this.collectionHolder).setCollection(newCollection); |
| |
| Iterator collectionValues = (Iterator) this.collectionHolder.iterator(); |
| assertEquals("fox", collectionValues.next()); |
| assertEquals("baz", collectionValues.next()); |
| Iterator filteredCollectionValues = (Iterator) this.filteredCollectionHolder.iterator(); |
| assertEquals("baz", filteredCollectionValues.next()); |
| assertFalse(filteredCollectionValues.hasNext()); |
| } |
| |
| public void testLazyListening() { |
| assertTrue(((AbstractModel) this.collectionHolder).hasNoCollectionChangeListeners(CollectionValueModel.VALUES)); |
| CollectionChangeListener listener = this.buildFilteredListener(); |
| this.filteredCollectionHolder.addCollectionChangeListener(listener); |
| assertTrue(((AbstractModel) this.collectionHolder).hasAnyCollectionChangeListeners(CollectionValueModel.VALUES)); |
| this.filteredCollectionHolder.removeCollectionChangeListener(listener); |
| assertTrue(((AbstractModel) this.collectionHolder).hasNoCollectionChangeListeners(CollectionValueModel.VALUES)); |
| |
| this.filteredCollectionHolder.addCollectionChangeListener(CollectionValueModel.VALUES, listener); |
| assertTrue(((AbstractModel) this.collectionHolder).hasAnyCollectionChangeListeners(CollectionValueModel.VALUES)); |
| this.filteredCollectionHolder.removeCollectionChangeListener(CollectionValueModel.VALUES, listener); |
| assertTrue(((AbstractModel) this.collectionHolder).hasNoCollectionChangeListeners(CollectionValueModel.VALUES)); |
| } |
| |
| public void testCollectionChange1() { |
| this.collectionHolder.addCollectionChangeListener(this.buildListener()); |
| this.filteredCollectionHolder.addCollectionChangeListener(this.buildFilteredListener()); |
| this.verifyCollectionChanges(); |
| } |
| |
| public void testCollectionChange2() { |
| this.collectionHolder.addCollectionChangeListener(CollectionValueModel.VALUES, this.buildListener()); |
| this.filteredCollectionHolder.addCollectionChangeListener(CollectionValueModel.VALUES, this.buildFilteredListener()); |
| this.verifyCollectionChanges(); |
| } |
| |
| private void clearEvents() { |
| this.addEvent = null; |
| this.removeEvent = null; |
| this.collectionClearedEvent = null; |
| this.collectionChangedEvent = null; |
| this.filteredAddEvent = null; |
| this.filteredRemoveEvent = null; |
| this.filteredCollectionClearedEvent = null; |
| this.filteredCollectionChangedEvent = null; |
| } |
| |
| private void verifyCollectionChanges() { |
| clearEvents(); |
| this.collectionHolder.add("bar"); |
| Collection tempCollection = new Vector(); |
| tempCollection.add("bar"); |
| this.verifyEvent(this.addEvent, this.collectionHolder, tempCollection); |
| this.verifyEvent(this.filteredAddEvent, this.filteredCollectionHolder, tempCollection); |
| |
| clearEvents(); |
| this.collectionHolder.remove("foo"); |
| tempCollection.remove("bar"); |
| tempCollection.add("foo"); |
| this.verifyEvent(this.removeEvent, this.collectionHolder, tempCollection); |
| assertNull(this.filteredRemoveEvent); |
| |
| |
| clearEvents(); |
| this.collectionHolder.remove("bar"); |
| tempCollection.add("bar"); |
| tempCollection.remove("foo"); |
| this.verifyEvent(this.removeEvent, this.collectionHolder, tempCollection); |
| this.verifyEvent(this.filteredRemoveEvent, this.filteredCollectionHolder, tempCollection); |
| |
| |
| clearEvents(); |
| this.collectionHolder.add("foo"); |
| tempCollection.remove("bar"); |
| tempCollection.add("foo"); |
| this.verifyEvent(this.addEvent, this.collectionHolder, tempCollection); |
| assertNull(this.filteredAddEvent); |
| |
| |
| clearEvents(); |
| Collection newCollection = new Vector(); |
| newCollection.add("fox"); |
| newCollection.add("baz"); |
| |
| ((SimpleCollectionValueModel) this.collectionHolder).setCollection(newCollection); |
| |
| this.verifyEvent(this.collectionChangedEvent, this.collectionHolder, new Vector()); |
| |
| tempCollection.remove("foo"); |
| tempCollection.add("baz"); |
| this.verifyEvent(this.filteredCollectionChangedEvent, this.filteredCollectionHolder, new Vector()); |
| |
| } |
| |
| private CollectionChangeListener buildListener() { |
| return new CollectionChangeListener() { |
| public void itemsAdded(CollectionChangeEvent e) { |
| FilteringCollectionValueModelTests.this.addEvent = e; |
| } |
| public void itemsRemoved(CollectionChangeEvent e) { |
| FilteringCollectionValueModelTests.this.removeEvent = e; |
| } |
| public void collectionCleared(CollectionChangeEvent e) { |
| FilteringCollectionValueModelTests.this.collectionClearedEvent = e; |
| } |
| public void collectionChanged(CollectionChangeEvent e) { |
| FilteringCollectionValueModelTests.this.collectionChangedEvent = e; |
| } |
| }; |
| } |
| |
| private CollectionChangeListener buildFilteredListener() { |
| return new CollectionChangeListener() { |
| public void itemsAdded(CollectionChangeEvent e) { |
| FilteringCollectionValueModelTests.this.filteredAddEvent = e; |
| } |
| public void itemsRemoved(CollectionChangeEvent e) { |
| FilteringCollectionValueModelTests.this.filteredRemoveEvent = e; |
| } |
| public void collectionCleared(CollectionChangeEvent e) { |
| FilteringCollectionValueModelTests.this.filteredCollectionClearedEvent = e; |
| } |
| public void collectionChanged(CollectionChangeEvent e) { |
| FilteringCollectionValueModelTests.this.filteredCollectionChangedEvent = e; |
| } |
| }; |
| } |
| |
| private void verifyEvent(CollectionChangeEvent event, Object source, Object items) { |
| assertEquals(source, event.getSource()); |
| assertEquals(CollectionValueModel.VALUES, event.collectionName()); |
| assertEquals(items, CollectionTools.vector(event.items())); |
| } |
| |
| public void testRemoveFilteredItem() { |
| // build collection with TestItems |
| this.collectionHolder = new SimpleCollectionValueModel(this.buildCollection2()); |
| this.filteredCollectionHolder = new FilteringCollectionValueModel(this.collectionHolder, this.buildFilter2()); |
| // add a listener to "activate" the wrapper |
| this.filteredCollectionHolder.addCollectionChangeListener(CollectionValueModel.VALUES, this.buildFilteredListener()); |
| |
| assertEquals(0, this.filteredCollectionHolder.size()); |
| |
| this.collectionHolder.add(new TestItem("bar")); |
| assertEquals(1, this.filteredCollectionHolder.size()); |
| |
| TestItem baz = new TestItem("baz"); |
| this.collectionHolder.add(baz); |
| assertEquals(2, this.filteredCollectionHolder.size()); |
| // before removing it, change the item so that it is filtered |
| baz.name = "jaz"; |
| this.collectionHolder.remove(baz); |
| // this would fail because the item was not removed from |
| // the filtered collection cache... but we've fixed it now |
| assertEquals(1, this.filteredCollectionHolder.size()); |
| } |
| |
| private Collection buildCollection2() { |
| Collection collection = new Vector(); |
| collection.add(new TestItem("foo")); |
| return collection; |
| } |
| |
| private Filter buildFilter2() { |
| return new Filter() { |
| public boolean accept(Object o) { |
| return ((TestItem) o).name.startsWith("b"); |
| } |
| }; |
| } |
| |
| |
| private class TestItem { |
| String name; |
| TestItem(String name) { |
| super(); |
| this.name = name; |
| } |
| } |
| |
| } |