| /******************************************************************************* |
| * Copyright (c) 2007, 2009 Matthew Hall 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: |
| * Matthew Hall - initial API and implementation (bug 206839) |
| * Matthew Hall - bug 213145, 194734, 195222 |
| *******************************************************************************/ |
| package org.eclipse.jface.tests.internal.databinding.viewers; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.assertSame; |
| import static org.junit.Assert.fail; |
| |
| import org.eclipse.core.databinding.observable.IObservable; |
| import org.eclipse.core.databinding.observable.Realm; |
| import org.eclipse.core.databinding.observable.value.IObservableValue; |
| import org.eclipse.core.databinding.observable.value.ValueChangeEvent; |
| import org.eclipse.jface.databinding.conformance.MutableObservableValueContractTest; |
| import org.eclipse.jface.databinding.conformance.delegate.AbstractObservableValueContractDelegate; |
| import org.eclipse.jface.databinding.conformance.util.ValueChangeEventTracker; |
| import org.eclipse.jface.databinding.viewers.ViewerProperties; |
| import org.eclipse.jface.databinding.viewers.ViewersObservables; |
| import org.eclipse.jface.tests.databinding.AbstractDefaultRealmTestCase; |
| import org.eclipse.jface.viewers.IStructuredContentProvider; |
| import org.eclipse.jface.viewers.TableViewer; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.widgets.Shell; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import junit.framework.TestSuite; |
| |
| /** |
| * Tests for ViewerInputObservableValue. |
| * |
| * @since 1.2 |
| */ |
| public class ViewerInputObservableValueTest extends AbstractDefaultRealmTestCase { |
| private TableViewer viewer; |
| private static String[] model = new String[] { "0", "1" }; |
| |
| @Override |
| @Before |
| public void setUp() throws Exception { |
| super.setUp(); |
| Shell shell = new Shell(); |
| viewer = new TableViewer(shell, SWT.NONE); |
| viewer.setContentProvider(new ContentProvider()); |
| } |
| |
| @Override |
| @After |
| public void tearDown() throws Exception { |
| Shell shell = viewer.getTable().getShell(); |
| if (!shell.isDisposed()) |
| shell.dispose(); |
| super.tearDown(); |
| } |
| |
| @Test |
| public void testConstructor_IllegalArgumentException() { |
| try { |
| ViewersObservables.observeInput(null); |
| fail("Expected IllegalArgumentException for null argument"); |
| } catch (IllegalArgumentException expected) { |
| } |
| } |
| |
| @Test |
| public void testSetInputOnViewer_FiresChangeEventOnGetValue() { |
| IObservableValue observable = ViewersObservables.observeInput(viewer); |
| ValueChangeEventTracker listener = ValueChangeEventTracker |
| .observe(observable); |
| |
| assertNull(viewer.getInput()); |
| assertEquals(0, listener.count); |
| |
| viewer.setInput(model); |
| |
| assertEquals(model, viewer.getInput()); |
| assertEquals(0, listener.count); |
| |
| // Call to getValue() causes observable to discover change |
| assertEquals(model, observable.getValue()); |
| assertEquals(1, listener.count); |
| |
| viewer.setInput(null); |
| assertEquals(null, viewer.getInput()); |
| |
| assertEquals(null, observable.getValue()); |
| assertEquals(2, listener.count); |
| } |
| |
| @Test |
| public void testGetSetValue_FiresChangeEvents() { |
| IObservableValue observable = ViewersObservables.observeInput(viewer); |
| ValueChangeEventTracker listener = new ValueChangeEventTracker(); |
| observable.addValueChangeListener(listener); |
| |
| assertNull(observable.getValue()); |
| assertEquals(0, listener.count); |
| |
| observable.setValue(model); |
| |
| assertEquals(model, observable.getValue()); |
| assertEquals(1, listener.count); |
| assertValueChangeEventEquals(observable, null, model, listener.event); |
| |
| observable.setValue(null); |
| |
| assertNull(observable.getValue()); |
| assertEquals(2, listener.count); |
| assertValueChangeEventEquals(observable, model, null, listener.event); |
| } |
| |
| @Test |
| public void testGetValueType_AlwaysNull() throws Exception { |
| IObservableValue observable = ViewersObservables.observeInput(viewer); |
| assertEquals(null, observable.getValueType()); |
| } |
| |
| @Test |
| public void testDispose() throws Exception { |
| IObservableValue observable = ViewersObservables.observeInput(viewer); |
| observable.dispose(); |
| try { |
| observable.setValue(model); |
| fail("Expected NullPointerException"); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| private void assertValueChangeEventEquals( |
| IObservableValue expectedObservable, Object expectedOldValue, |
| Object expectedNewValue, ValueChangeEvent event) { |
| assertSame(expectedObservable, event.getObservableValue()); |
| assertEquals(expectedOldValue, event.diff.getOldValue()); |
| assertEquals(expectedNewValue, event.diff.getNewValue()); |
| } |
| |
| static class ContentProvider implements IStructuredContentProvider { |
| @Override |
| public Object[] getElements(Object inputElement) { |
| return (String[]) inputElement; |
| } |
| } |
| |
| public static void addConformanceTest(TestSuite suite) { |
| suite.addTest(MutableObservableValueContractTest.suite(new Delegate())); |
| } |
| |
| static class Delegate extends AbstractObservableValueContractDelegate { |
| TableViewer viewer; |
| |
| @Override |
| public void setUp() { |
| super.setUp(); |
| Shell shell = new Shell(); |
| viewer = new TableViewer(shell, SWT.NONE); |
| viewer.setContentProvider(new ContentProvider()); |
| } |
| |
| @Override |
| public void tearDown() { |
| Shell shell = viewer.getTable().getShell(); |
| if (!shell.isDisposed()) |
| shell.dispose(); |
| super.tearDown(); |
| } |
| |
| @Override |
| public IObservableValue createObservableValue(Realm realm) { |
| return ViewerProperties.input().observe(realm, viewer); |
| } |
| |
| @Override |
| public void change(IObservable observable) { |
| IObservableValue value = (IObservableValue) observable; |
| value.setValue(createValue(value)); |
| } |
| |
| @Override |
| public Object createValue(IObservableValue observable) { |
| return new String[] { "one", "two" }; |
| } |
| |
| @Override |
| public Object getValueType(IObservableValue observable) { |
| return null; |
| } |
| } |
| } |