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/*******************************************************************************
* Copyright (c) 2007, 2016 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.common.utility.tests.internal.model.value;
import org.eclipse.jpt.common.utility.internal.model.AbstractModel;
import org.eclipse.jpt.common.utility.internal.model.value.PropertyValueModelTools;
import org.eclipse.jpt.common.utility.internal.model.value.SimplePropertyValueModel;
import org.eclipse.jpt.common.utility.internal.transformer.AbstractTransformer;
import org.eclipse.jpt.common.utility.model.event.PropertyChangeEvent;
import org.eclipse.jpt.common.utility.model.listener.ChangeAdapter;
import org.eclipse.jpt.common.utility.model.listener.ChangeListener;
import org.eclipse.jpt.common.utility.model.value.ModifiablePropertyValueModel;
import org.eclipse.jpt.common.utility.model.value.PropertyValueModel;
import org.eclipse.jpt.common.utility.tests.internal.TestTools;
import org.eclipse.jpt.common.utility.transformer.Transformer;
import junit.framework.TestCase;
@SuppressWarnings("nls")
public class TransformationPropertyValueModelTests
extends TestCase
{
private ModifiablePropertyValueModel<String> stringModel;
PropertyChangeEvent stringEvent;
private ModifiablePropertyValueModel<String> testModel;
PropertyChangeEvent testEvent;
public TransformationPropertyValueModelTests(String name) {
super(name);
}
@Override
protected void setUp() throws Exception {
super.setUp();
this.stringModel = new SimplePropertyValueModel<>("foo");
this.testModel = PropertyValueModelTools.transform_(this.stringModel, UPPER_CASE_TRANSFORMER, LOWER_CASE_TRANSFORMER);
}
private static final Transformer<String, String> UPPER_CASE_TRANSFORMER = new UpperCaseTransformer();
static class UpperCaseTransformer
extends AbstractTransformer<String, String>
{
@Override
public String transform_(String s) {
return s.toUpperCase();
}
}
private static final Transformer<String, String> LOWER_CASE_TRANSFORMER = new LowerCaseTransformer();
static class LowerCaseTransformer
extends AbstractTransformer<String, String>
{
@Override
public String transform_(String s) {
return s.toLowerCase();
}
}
@Override
protected void tearDown() throws Exception {
TestTools.clear(this);
super.tearDown();
}
public void testValue() {
assertEquals("foo", this.stringModel.getValue());
assertNull(this.testModel.getValue());
ChangeListener listener = this.buildTransformationListener();
this.testModel.addChangeListener(listener);
assertEquals("FOO", this.testModel.getValue());
this.stringModel.setValue("bar");
assertEquals("bar", this.stringModel.getValue());
assertEquals("BAR", this.testModel.getValue());
this.stringModel.setValue("baz");
assertEquals("baz", this.stringModel.getValue());
assertEquals("BAZ", this.testModel.getValue());
this.stringModel.setValue(null);
assertNull(this.stringModel.getValue());
assertNull(this.testModel.getValue());
this.stringModel.setValue("foo");
assertEquals("foo", this.stringModel.getValue());
assertEquals("FOO", this.testModel.getValue());
}
public void testSetValue() {
this.testModel.setValue("BAR");
assertEquals("bar", this.stringModel.getValue());
assertNull(this.testModel.getValue()); // no listeners
// NB: odd behavior(!)
this.testModel.setValue("Foo");
assertEquals("foo", this.stringModel.getValue());
assertNull(this.testModel.getValue()); // still no listeners
ChangeListener listener = this.buildTransformationListener();
this.testModel.addChangeListener(listener);
assertEquals("FOO", this.testModel.getValue());
this.testModel.removeChangeListener(listener);
this.testModel.setValue(null);
assertNull(this.stringModel.getValue());
assertNull(this.testModel.getValue());
// NB: odd behavior(!)
this.testModel.setValue("baz");
assertEquals("baz", this.stringModel.getValue());
assertNull(this.testModel.getValue()); // no listeners
this.testModel.addChangeListener(listener);
assertEquals("BAZ", this.testModel.getValue());
this.testModel.removeChangeListener(listener);
}
public void testLazyListening() {
assertTrue(((AbstractModel) this.stringModel).hasNoPropertyChangeListeners(PropertyValueModel.VALUE));
ChangeListener listener = this.buildTransformationListener();
this.testModel.addChangeListener(listener);
assertTrue(((AbstractModel) this.stringModel).hasAnyPropertyChangeListeners(PropertyValueModel.VALUE));
this.testModel.removeChangeListener(listener);
assertTrue(((AbstractModel) this.stringModel).hasNoPropertyChangeListeners(PropertyValueModel.VALUE));
this.testModel.addPropertyChangeListener(PropertyValueModel.VALUE, listener);
assertTrue(((AbstractModel) this.stringModel).hasAnyPropertyChangeListeners(PropertyValueModel.VALUE));
this.testModel.removePropertyChangeListener(PropertyValueModel.VALUE, listener);
assertTrue(((AbstractModel) this.stringModel).hasNoPropertyChangeListeners(PropertyValueModel.VALUE));
}
public void testPropertyChange1() {
this.stringModel.addChangeListener(this.buildListener());
this.testModel.addChangeListener(this.buildTransformationListener());
this.verifyPropertyChanges();
}
public void testPropertyChange2() {
this.stringModel.addPropertyChangeListener(PropertyValueModel.VALUE, this.buildListener());
this.testModel.addPropertyChangeListener(PropertyValueModel.VALUE, this.buildTransformationListener());
this.verifyPropertyChanges();
}
private void verifyPropertyChanges() {
this.stringEvent = null;
this.testEvent = null;
this.stringModel.setValue("bar");
this.verifyEvent(this.stringEvent, this.stringModel, "foo", "bar");
this.verifyEvent(this.testEvent, this.testModel, "FOO", "BAR");
this.stringEvent = null;
this.testEvent = null;
this.stringModel.setValue("baz");
this.verifyEvent(this.stringEvent, this.stringModel, "bar", "baz");
this.verifyEvent(this.testEvent, this.testModel, "BAR", "BAZ");
this.stringEvent = null;
this.testEvent = null;
this.stringModel.setValue("Foo");
this.verifyEvent(this.stringEvent, this.stringModel, "baz", "Foo");
this.verifyEvent(this.testEvent, this.testModel, "BAZ", "FOO");
this.stringEvent = null;
this.testEvent = null;
this.stringModel.setValue("FOO");
this.verifyEvent(this.stringEvent, this.stringModel, "Foo", "FOO");
assertNull(this.testEvent);
this.stringEvent = null;
this.testEvent = null;
this.stringModel.setValue(null);
this.verifyEvent(this.stringEvent, this.stringModel, "FOO", null);
this.verifyEvent(this.testEvent, this.testModel, "FOO", null);
this.stringEvent = null;
this.testEvent = null;
this.stringModel.setValue("bar");
this.verifyEvent(this.stringEvent, this.stringModel, null, "bar");
this.verifyEvent(this.testEvent, this.testModel, null, "BAR");
}
private ChangeListener buildListener() {
return new ChangeAdapter() {
@Override
public void propertyChanged(PropertyChangeEvent e) {
TransformationPropertyValueModelTests.this.stringEvent = e;
}
};
}
private ChangeListener buildTransformationListener() {
return new ChangeAdapter() {
@Override
public void propertyChanged(PropertyChangeEvent e) {
TransformationPropertyValueModelTests.this.testEvent = e;
}
};
}
private void verifyEvent(PropertyChangeEvent e, Object source, Object oldValue, Object newValue) {
assertEquals(source, e.getSource());
assertEquals(PropertyValueModel.VALUE, e.getPropertyName());
assertEquals(oldValue, e.getOldValue());
assertEquals(newValue, e.getNewValue());
}
}
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