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/*******************************************************************************
* Copyright (c) 2007, 2010 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 junit.framework.TestCase;
import org.eclipse.jpt.utility.internal.ReflectionTools;
import org.eclipse.jpt.utility.internal.model.AbstractModel;
import org.eclipse.jpt.utility.model.event.StateChangeEvent;
import org.eclipse.jpt.utility.model.listener.PropertyChangeListener;
import org.eclipse.jpt.utility.model.listener.ReflectiveChangeListener;
import org.eclipse.jpt.utility.model.listener.StateChangeListener;
@SuppressWarnings("nls")
public class ReflectiveStateChangeListenerTests extends TestCase {
public ReflectiveStateChangeListenerTests(String name) {
super(name);
}
public void testZeroArgument() {
TestModel testModel = new TestModel();
Target target = new Target(testModel);
testModel.addStateChangeListener(ReflectiveChangeListener.buildStateChangeListener(target, "stateChangedZeroArgument"));
testModel.changeState();
assertTrue(target.zeroArgumentFlag);
assertFalse(target.singleArgumentFlag);
}
public void testSingleArgument() {
TestModel testModel = new TestModel();
Target target = new Target(testModel);
testModel.addStateChangeListener(ReflectiveChangeListener.buildStateChangeListener(target, "stateChangedSingleArgument"));
testModel.changeState();
assertFalse(target.zeroArgumentFlag);
assertTrue(target.singleArgumentFlag);
}
/**
* test method that has more general method parameter type
*/
public void testSingleArgument2() throws Exception {
TestModel testModel = new TestModel();
Target target = new Target(testModel);
Method method = ReflectionTools.getMethod(target, "stateChangedSingleArgument2", new Class[] {Object.class});
testModel.addStateChangeListener(ReflectiveChangeListener.buildStateChangeListener(target, method));
testModel.changeState();
assertFalse(target.zeroArgumentFlag);
assertTrue(target.singleArgumentFlag);
}
public void testListenerMismatch() {
TestModel testModel = new TestModel();
Target target = new Target(testModel);
// build a STATE change listener and hack it so we
// can add it as a PROPERTY change listener
Object listener = ReflectiveChangeListener.buildStateChangeListener(target, "stateChangedSingleArgument");
testModel.addPropertyChangeListener("value", (PropertyChangeListener) listener);
boolean exCaught = false;
try {
testModel.changeProperty();
fail("listener mismatch: " + listener);
} catch (IllegalArgumentException ex) {
exCaught = true;
}
assertTrue(exCaught);
}
public void testBogusDoubleArgument1() {
TestModel testModel = new TestModel();
Target target = new Target(testModel);
boolean exCaught = false;
try {
StateChangeListener listener = ReflectiveChangeListener.buildStateChangeListener(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();
Target target = new Target(testModel);
Method method = ReflectionTools.getMethod(target, "stateChangedDoubleArgument", new Class[] {StateChangeEvent.class, Object.class});
boolean exCaught = false;
try {
StateChangeListener listener = ReflectiveChangeListener.buildStateChangeListener(target, method);
fail("bogus listener: " + listener);
} catch (RuntimeException ex) {
if (ex.getMessage().equals(method.toString())) {
exCaught = true;
}
}
assertTrue(exCaught);
}
class TestModel extends AbstractModel {
TestModel() {
super();
}
void changeState() {
this.fireStateChanged();
}
void changeProperty() {
this.firePropertyChanged("value", 55, 42);
}
}
class Target {
TestModel testModel;
boolean zeroArgumentFlag = false;
boolean singleArgumentFlag = false;
Target(TestModel testModel) {
super();
this.testModel = testModel;
}
void stateChangedZeroArgument() {
this.zeroArgumentFlag = true;
}
void stateChangedSingleArgument(StateChangeEvent e) {
this.singleArgumentFlag = true;
assertSame(this.testModel, e.getSource());
}
void stateChangedSingleArgument2(Object e) {
this.singleArgumentFlag = true;
assertSame(this.testModel, ((StateChangeEvent) e).getSource());
}
void stateChangedDoubleArgument(StateChangeEvent e, Object o) {
fail("bogus event: " + e + " - object: " + o);
}
}
}
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