| /******************************************************************************* |
| * Copyright (c) 2007 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 |
| * Matthew Hall - bug 213145 |
| ******************************************************************************/ |
| |
| package org.eclipse.jface.databinding.conformance; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import junit.framework.Test; |
| |
| import org.eclipse.core.databinding.observable.ChangeEvent; |
| import org.eclipse.core.databinding.observable.IChangeListener; |
| import org.eclipse.core.databinding.observable.value.IObservableValue; |
| import org.eclipse.core.databinding.observable.value.IValueChangeListener; |
| import org.eclipse.core.databinding.observable.value.ValueChangeEvent; |
| import org.eclipse.jface.databinding.conformance.delegate.IObservableValueContractDelegate; |
| import org.eclipse.jface.databinding.conformance.util.CurrentRealm; |
| import org.eclipse.jface.databinding.conformance.util.RealmTester; |
| import org.eclipse.jface.databinding.conformance.util.SuiteBuilder; |
| import org.eclipse.jface.databinding.conformance.util.ValueChangeEventTracker; |
| |
| /** |
| * @since 3.2 |
| */ |
| public class ObservableValueContractTest extends ObservableContractTest { |
| private IObservableValueContractDelegate delegate; |
| private IObservableValue observable; |
| |
| public ObservableValueContractTest(IObservableValueContractDelegate delegate) { |
| super(delegate); |
| this.delegate = delegate; |
| } |
| |
| /** |
| * @param testName |
| * @param delegate |
| */ |
| public ObservableValueContractTest(String testName, |
| IObservableValueContractDelegate delegate) { |
| super(testName, delegate); |
| this.delegate = delegate; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.databinding.conformance.ObservableContractTest#setUp() |
| */ |
| protected void setUp() throws Exception { |
| super.setUp(); |
| observable = (IObservableValue) getObservable(); |
| } |
| |
| public void testChange_ValueChangeEvent() throws Exception { |
| ValueChangeEventTracker listener = ValueChangeEventTracker.observe(observable); |
| |
| delegate.change(observable); |
| assertEquals(formatFail("On change value change listeners should be notified."), 1, |
| listener.count); |
| } |
| |
| public void testGetValueType_ExpectedType() throws Exception { |
| assertEquals(formatFail("Type of the value should be returned from getType()."), |
| delegate.getValueType(observable), observable.getValueType()); |
| } |
| |
| public void testChange_OrderOfNotifications() throws Exception { |
| final List listeners = new ArrayList(); |
| IChangeListener changeListener = new IChangeListener() { |
| public void handleChange(ChangeEvent event) { |
| listeners.add(this); |
| } |
| }; |
| |
| IValueChangeListener valueChangeListener = new IValueChangeListener() { |
| public void handleValueChange(ValueChangeEvent event) { |
| listeners.add(this); |
| } |
| }; |
| |
| observable.addChangeListener(changeListener); |
| observable.addValueChangeListener(valueChangeListener); |
| |
| delegate.change(observable); |
| |
| assertTrue(formatFail("Change Listeners were not notified on change."), listeners.size() > 0); |
| |
| // not asserting the fact that both are notified as this is asserted in |
| // other tests |
| assertEquals( |
| formatFail("Change listeners should be notified before value change listeners."), |
| changeListener, listeners.get(0)); |
| assertEquals( |
| formatFail("Value change listeners should be notified after change listeners."), |
| valueChangeListener, listeners.get(1)); |
| } |
| |
| public void testChange_ValueChangeEventDiff() throws Exception { |
| ValueChangeEventTracker listener = ValueChangeEventTracker.observe(observable); |
| Object oldValue = observable.getValue(); |
| |
| delegate.change(observable); |
| |
| ValueChangeEvent event = listener.event; |
| |
| assertTrue(formatFail("Change Listeners were not notified on change."), listener.count > 0); |
| |
| assertEquals( |
| formatFail("When a value change event is fired the old value should be the previous value of the observable value."), |
| oldValue, event.diff.getOldValue()); |
| assertEquals( |
| formatFail("When a value change event is fired the new value should be the same as the current value of the observable value."), |
| observable.getValue(), event.diff.getNewValue()); |
| } |
| |
| public void testChange_ValueChangeEventFiredAfterValueIsSet() |
| throws Exception { |
| class ValueChangeListener implements IValueChangeListener { |
| Object value; |
| |
| public void handleValueChange(ValueChangeEvent event) { |
| this.value = event.getObservableValue().getValue(); |
| } |
| } |
| |
| ValueChangeListener listener = new ValueChangeListener(); |
| observable.addValueChangeListener(listener); |
| delegate.change(observable); |
| assertEquals( |
| formatFail("When a value change event is fired the new value should be applied before firing the change event."), |
| listener.value, observable.getValue()); |
| } |
| |
| public void testRemoveValueChangeListener_RemovesListener() throws Exception { |
| ValueChangeEventTracker listener = ValueChangeEventTracker.observe(observable); |
| delegate.change(observable); |
| |
| // precondition |
| assertEquals(formatFail("Value change listeners should be notified on change."), 1, |
| listener.count); |
| |
| observable.removeValueChangeListener(listener); |
| delegate.change(observable); |
| |
| assertEquals( |
| formatFail("Value change listeners should not be notified after they've been removed from the observable."), |
| 1, listener.count); |
| } |
| |
| public void testGetValue_GetterCalled() throws Exception { |
| assertGetterCalled(new Runnable() { |
| public void run() { |
| observable.getValue(); |
| } |
| }, formatFail("IObservableValue.getValue()"), observable); |
| } |
| |
| public void testGetValue_RealmCheck() throws Exception { |
| RealmTester.exerciseCurrent(new Runnable() { |
| public void run() { |
| observable.getValue(); |
| } |
| }, (CurrentRealm) observable.getRealm()); |
| } |
| |
| public static Test suite(IObservableValueContractDelegate delegate) { |
| return new SuiteBuilder().addObservableContractTest( |
| ObservableValueContractTest.class, delegate).build(); |
| } |
| } |