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/*******************************************************************************
* Copyright (c) 2007, 2008 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.listener;
import java.lang.reflect.Method;
import org.eclipse.jpt.utility.internal.ClassTools;
import org.eclipse.jpt.utility.internal.model.AbstractModel;
import org.eclipse.jpt.utility.model.event.PropertyChangeEvent;
import org.eclipse.jpt.utility.model.listener.PropertyChangeListener;
import org.eclipse.jpt.utility.model.listener.ReflectiveChangeListener;
import org.eclipse.jpt.utility.model.listener.StateChangeListener;
import junit.framework.TestCase;
public class ReflectivePropertyChangeListenerTests extends TestCase {
public ReflectivePropertyChangeListenerTests(String name) {
super(name);
}
public void testZeroArgument() {
TestModel testModel = new TestModel(7);
Target target = new Target(testModel, TestModel.VALUE_PROPERTY, 7, 99);
testModel.addPropertyChangeListener(ReflectiveChangeListener.buildPropertyChangeListener(target, "propertyChangedZeroArgument"));
testModel.setValue(99);
assertTrue(target.zeroArgumentFlag);
assertFalse(target.singleArgumentFlag);
}
public void testZeroArgumentNamedProperty() {
TestModel testModel = new TestModel(7);
Target target = new Target(testModel, TestModel.VALUE_PROPERTY, 7, 99);
testModel.addPropertyChangeListener(TestModel.VALUE_PROPERTY, ReflectiveChangeListener.buildPropertyChangeListener(target, "propertyChangedZeroArgument"));
testModel.setValue(99);
assertTrue(target.zeroArgumentFlag);
assertFalse(target.singleArgumentFlag);
}
public void testSingleArgument() {
TestModel testModel = new TestModel(7);
Target target = new Target(testModel, TestModel.VALUE_PROPERTY, 7, 99);
testModel.addPropertyChangeListener(ReflectiveChangeListener.buildPropertyChangeListener(target, "propertyChangedSingleArgument"));
testModel.setValue(99);
assertFalse(target.zeroArgumentFlag);
assertTrue(target.singleArgumentFlag);
}
/**
* test method that has more general method parameter type
*/
public void testSingleArgument2() throws Exception {
TestModel testModel = new TestModel(7);
Target target = new Target(testModel, TestModel.VALUE_PROPERTY, 7, 99);
Method method = ClassTools.method(target, "propertyChangedSingleArgument2", new Class[] {Object.class});
testModel.addPropertyChangeListener(ReflectiveChangeListener.buildPropertyChangeListener(target, method));
testModel.setValue(99);
assertFalse(target.zeroArgumentFlag);
assertTrue(target.singleArgumentFlag);
}
public void testSingleArgumentNamedProperty() {
TestModel testModel = new TestModel(7);
Target target = new Target(testModel, TestModel.VALUE_PROPERTY, 7, 99);
testModel.addPropertyChangeListener(TestModel.VALUE_PROPERTY, ReflectiveChangeListener.buildPropertyChangeListener(target, "propertyChangedSingleArgument"));
testModel.setValue(99);
assertFalse(target.zeroArgumentFlag);
assertTrue(target.singleArgumentFlag);
}
/**
* test method that has more general method parameter type
*/
public void testSingleArgumentNamedProperty2() throws Exception {
TestModel testModel = new TestModel(7);
Target target = new Target(testModel, TestModel.VALUE_PROPERTY, 7, 99);
Method method = ClassTools.method(target, "propertyChangedSingleArgument2", new Class[] {Object.class});
testModel.addPropertyChangeListener(TestModel.VALUE_PROPERTY, ReflectiveChangeListener.buildPropertyChangeListener(target, method));
testModel.setValue(99);
assertFalse(target.zeroArgumentFlag);
assertTrue(target.singleArgumentFlag);
}
public void testListenerMismatch() {
TestModel testModel = new TestModel(7);
Target target = new Target(testModel, TestModel.VALUE_PROPERTY, 7, 99);
// build a PROPERTY change listener and hack it so we
// can add it as a STATE change listener
Object listener = ReflectiveChangeListener.buildPropertyChangeListener(target, "propertyChangedSingleArgument");
testModel.addStateChangeListener((StateChangeListener) listener);
boolean exCaught = false;
try {
testModel.setValue(99);
fail("listener mismatch: " + listener);
} catch (IllegalArgumentException ex) {
exCaught = true;
}
assertTrue(exCaught);
}
public void testBogusDoubleArgument1() {
TestModel testModel = new TestModel(7);
Target target = new Target(testModel, TestModel.VALUE_PROPERTY, 7, 99);
boolean exCaught = false;
try {
PropertyChangeListener listener = ReflectiveChangeListener.buildPropertyChangeListener(target, "stateChangedDoubleArgument");
fail("bogus listener: " + listener);
} catch (RuntimeException ex) {
if (ex.getCause().getClass() == NoSuchMethodException.class) {
exCaught = true;
}
}
assertTrue(exCaught);
}
public void testBogusDoubleArgument2() throws Exception {
TestModel testModel = new TestModel(7);
Target target = new Target(testModel, TestModel.VALUE_PROPERTY, 7, 99);
Method method = ClassTools.method(target, "propertyChangedDoubleArgument", new Class[] {PropertyChangeEvent.class, Object.class});
boolean exCaught = false;
try {
PropertyChangeListener listener = ReflectiveChangeListener.buildPropertyChangeListener(target, method);
fail("bogus listener: " + listener);
} catch (RuntimeException ex) {
if (ex.getMessage().equals(method.toString())) {
exCaught = true;
}
}
assertTrue(exCaught);
}
private class TestModel extends AbstractModel {
private int value = 0;
public static final String VALUE_PROPERTY = "value";
TestModel(int value) {
super();
this.value = value;
}
void setValue(int value) {
int old = this.value;
this.value = value;
this.firePropertyChanged(VALUE_PROPERTY, old, value);
if (old != value) {
this.fireStateChanged();
}
}
}
private class Target {
TestModel testModel;
String propertyName;
Object oldValue;
Object newValue;
boolean zeroArgumentFlag = false;
boolean singleArgumentFlag = false;
Target(TestModel testModel, String propertyName, int oldValue, int newValue) {
super();
this.testModel = testModel;
this.propertyName = propertyName;
this.oldValue = new Integer(oldValue);
this.newValue = new Integer(newValue);
}
void propertyChangedZeroArgument() {
this.zeroArgumentFlag = true;
}
void propertyChangedSingleArgument(PropertyChangeEvent e) {
this.singleArgumentFlag = true;
assertSame(this.testModel, e.getSource());
assertEquals(this.propertyName, e.getPropertyName());
assertEquals(this.oldValue, e.getOldValue());
assertEquals(this.newValue, e.getNewValue());
}
void propertyChangedSingleArgument2(Object o) {
PropertyChangeEvent e = (PropertyChangeEvent) o;
this.singleArgumentFlag = true;
assertSame(this.testModel, e.getSource());
assertEquals(this.propertyName, e.getPropertyName());
assertEquals(this.oldValue, e.getOldValue());
assertEquals(this.newValue, e.getNewValue());
}
void propertyChangedDoubleArgument(PropertyChangeEvent e, Object o) {
fail("bogus event: " + e);
}
}
}
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