| /******************************************************************************* |
| * Copyright (c) 2006, 2009 Brad Reynolds 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: |
| * Brad Reynolds - initial API and implementation |
| * Brad Reynolds - bug 171616 |
| * Katarzyna Marszalek - test case for bug 198519 |
| * Matthew Hall - bug 213145, 246103, 194734, 268688 |
| ******************************************************************************/ |
| |
| package org.eclipse.core.tests.internal.databinding.beans; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.beans.PropertyDescriptor; |
| |
| import org.eclipse.core.databinding.beans.BeanProperties; |
| import org.eclipse.core.databinding.beans.BeansObservables; |
| import org.eclipse.core.databinding.beans.IBeanObservable; |
| import org.eclipse.core.databinding.beans.IBeanProperty; |
| import org.eclipse.core.databinding.beans.PojoObservables; |
| import org.eclipse.core.databinding.observable.ChangeEvent; |
| import org.eclipse.core.databinding.observable.Diffs; |
| import org.eclipse.core.databinding.observable.IChangeListener; |
| import org.eclipse.core.databinding.observable.IObservable; |
| import org.eclipse.core.databinding.observable.Realm; |
| import org.eclipse.core.databinding.observable.value.ComputedValue; |
| import org.eclipse.core.databinding.observable.value.IObservableValue; |
| import org.eclipse.jface.databinding.conformance.MutableObservableValueContractTest; |
| import org.eclipse.jface.databinding.conformance.delegate.AbstractObservableValueContractDelegate; |
| import org.eclipse.jface.databinding.conformance.util.ChangeEventTracker; |
| import org.eclipse.jface.databinding.conformance.util.CurrentRealm; |
| import org.eclipse.jface.databinding.conformance.util.ValueChangeEventTracker; |
| import org.eclipse.jface.examples.databinding.model.SimplePerson; |
| import org.eclipse.jface.tests.databinding.AbstractDefaultRealmTestCase; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import junit.framework.TestSuite; |
| |
| /** |
| * @since 3.2 |
| */ |
| public class JavaBeanObservableValueTest extends AbstractDefaultRealmTestCase { |
| private Bean bean; |
| private IObservableValue observableValue; |
| private IBeanObservable beanObservable; |
| private PropertyDescriptor propertyDescriptor; |
| private String propertyName; |
| |
| @Override |
| @Before |
| public void setUp() throws Exception { |
| super.setUp(); |
| |
| bean = new Bean(); |
| propertyName = "value"; |
| propertyDescriptor = ((IBeanProperty) BeanProperties.value(Bean.class, |
| propertyName)).getPropertyDescriptor(); |
| observableValue = BeansObservables.observeValue(bean, propertyName); |
| beanObservable = (IBeanObservable) observableValue; |
| } |
| |
| @Test |
| public void testGetObserved() throws Exception { |
| assertEquals(bean, beanObservable.getObserved()); |
| } |
| |
| @Test |
| public void testGetPropertyDescriptor() throws Exception { |
| assertEquals(propertyDescriptor, beanObservable.getPropertyDescriptor()); |
| } |
| |
| @Test |
| public void testSetValueThrowsExceptionThrownByBean() throws Exception { |
| ThrowsSetException temp = new ThrowsSetException(); |
| IObservableValue observable = BeansObservables.observeValue(temp, |
| "value"); |
| |
| try { |
| observable.setValue(""); |
| fail("exception should have been thrown"); |
| } catch (RuntimeException e) { |
| assertEquals(temp.thrownException, e.getCause()); |
| } |
| } |
| |
| @Test |
| public void testGetValueThrowsExceptionThrownByBean() throws Exception { |
| ThrowsGetException temp = new ThrowsGetException(); |
| IObservableValue observable = BeansObservables.observeValue(temp, |
| "value"); |
| |
| try { |
| observable.getValue(); |
| fail("exception should have been thrown"); |
| } catch (RuntimeException e) { |
| assertEquals(temp.thrownException, e.getCause()); |
| } |
| } |
| |
| @Test |
| public void testBug198519() { |
| final SimplePerson person = new SimplePerson(); |
| final ComputedValue cv = new ComputedValue() { |
| final IObservableValue name = BeansObservables.observeValue(person, |
| "name"); //$NON-NLS-1$ |
| |
| @Override |
| protected Object calculate() { |
| return Boolean.valueOf(name.getValue() != null); |
| } |
| }; |
| cv.addChangeListener(new IChangeListener() { |
| @Override |
| public void handleChange(ChangeEvent event) { |
| cv.getValue(); |
| } |
| }); |
| person.setName("foo"); |
| } |
| |
| @Test |
| public void testConstructor_RegistersListeners() throws Exception { |
| IObservableValue observable = BeansObservables.observeValue(bean, |
| propertyName); |
| ChangeEventTracker.observe(observable); |
| |
| assertTrue(bean.hasListeners(propertyName)); |
| } |
| |
| @Test |
| public void testConstructor_SkipRegisterListeners() throws Exception { |
| IObservableValue observable = PojoObservables.observeValue(bean, |
| propertyName); |
| ChangeEventTracker.observe(observable); |
| |
| assertFalse(bean.hasListeners(propertyName)); |
| } |
| |
| @Test |
| public void testSetBeanProperty_CorrectForNullOldAndNewValues() { |
| // The java bean spec allows the old and new values in a |
| // PropertyChangeEvent to |
| // be null, which indicates that an unknown change occured. |
| |
| // This test ensures that JavaBeanObservableValue fires the correct |
| // value diff |
| // even if the bean implementor is lazy :-P |
| |
| Bean bean = new AnnoyingBean(); |
| bean.setValue("old"); |
| IObservableValue observable = BeansObservables.observeValue(bean, |
| "value"); |
| ValueChangeEventTracker tracker = ValueChangeEventTracker |
| .observe(observable); |
| bean.setValue("new"); |
| assertEquals(1, tracker.count); |
| assertEquals("old", tracker.event.diff.getOldValue()); |
| assertEquals("new", tracker.event.diff.getNewValue()); |
| } |
| |
| @Test |
| public void testSetBeanPropertyOutsideRealm_FiresEventInsideRealm() { |
| Bean bean = new Bean("old"); |
| CurrentRealm realm = new CurrentRealm(true); |
| IObservableValue observable = BeansObservables.observeValue(realm, |
| bean, "value"); |
| ValueChangeEventTracker tracker = ValueChangeEventTracker |
| .observe(observable); |
| |
| realm.setCurrent(false); |
| bean.setValue("new"); |
| assertEquals(0, tracker.count); |
| |
| realm.setCurrent(true); |
| assertEquals(1, tracker.count); |
| assertEquals(Diffs.createValueDiff("old", "new"), tracker.event.diff); |
| } |
| |
| public static void addConformanceTest(TestSuite suite) { |
| suite.addTest(MutableObservableValueContractTest.suite(new Delegate())); |
| } |
| |
| /* package */static class Delegate extends |
| AbstractObservableValueContractDelegate { |
| private Bean bean; |
| |
| @Override |
| public void setUp() { |
| super.setUp(); |
| |
| bean = new Bean(""); |
| } |
| |
| @Override |
| public IObservableValue createObservableValue(Realm realm) { |
| return BeansObservables.observeValue(realm, bean, "value"); |
| } |
| |
| @Override |
| public void change(IObservable observable) { |
| IObservableValue observableValue = (IObservableValue) observable; |
| observableValue.setValue(createValue(observableValue)); |
| } |
| |
| @Override |
| public Object getValueType(IObservableValue observable) { |
| return String.class; |
| } |
| |
| @Override |
| public Object createValue(IObservableValue observable) { |
| return observable.getValue() + "a"; |
| } |
| } |
| |
| /** |
| * Throws an exception when the value is set. |
| * |
| * @since 3.2 |
| */ |
| /* package */class ThrowsSetException { |
| private String value; |
| |
| /* package */NullPointerException thrownException; |
| |
| public void setValue(String value) { |
| throw thrownException = new NullPointerException(); |
| } |
| |
| public String getValue() { |
| return value; |
| } |
| } |
| |
| /* package */class ThrowsGetException { |
| public String value; |
| |
| /* package */NullPointerException thrownException; |
| |
| public String getValue() { |
| throw thrownException = new NullPointerException(); |
| } |
| |
| public void setValue(String value) { |
| this.value = value; |
| } |
| } |
| } |