/*******************************************************************************
* Copyright (c) 2006, 2015 IBM Corporation 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:
* IBM Corporation - initial API and implementation
* Brad Reynolds - bug 116920, 159768
* Matthew Hall - bug 260329
*******************************************************************************/
package org.eclipse.core.tests.databinding;
import static org.eclipse.core.databinding.UpdateListStrategy.POLICY_NEVER;
import static org.eclipse.core.databinding.UpdateListStrategy.POLICY_UPDATE;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import org.eclipse.core.databinding.Binding;
import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.ListBinding;
import org.eclipse.core.databinding.UpdateListStrategy;
import org.eclipse.core.databinding.conversion.IConverter;
import org.eclipse.core.databinding.observable.list.IObservableList;
import org.eclipse.core.databinding.observable.list.WritableList;
import org.eclipse.core.databinding.util.ILogger;
import org.eclipse.core.databinding.util.Policy;
import org.eclipse.core.databinding.validation.ValidationStatus;
import org.eclipse.core.internal.databinding.BindingStatus;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.tests.databinding.AbstractDefaultRealmTestCase;
import org.junit.Assert;
/**
* @since 1.1
*/
public class ListBindingTest extends AbstractDefaultRealmTestCase {
private IObservableList target;
private IObservableList model;
private DataBindingContext dbc;
@Override
protected void setUp() throws Exception {
super.setUp();
target = new WritableList(new ArrayList(), String.class);
model = new WritableList(new ArrayList(), String.class);
dbc = new DataBindingContext();
}
@Override
public void tearDown() throws Exception {
dbc.dispose();
model.dispose();
target.dispose();
}
public void testUpdateModelFromTarget() throws Exception {
Binding binding = dbc.bindList(target, model,
new UpdateListStrategy(UpdateListStrategy.POLICY_ON_REQUEST),
new UpdateListStrategy(UpdateListStrategy.POLICY_ON_REQUEST));
target.add("1");
List targetCopy = new ArrayList(target.size());
targetCopy.addAll(target);
model.add("2");
assertFalse("target should not equal model", target.equals(model));
binding.updateTargetToModel();
assertEquals("target should not have changed", targetCopy, target);
assertEquals("target != model", target, model);
}
public void testUpdateTargetFromModel() throws Exception {
Binding binding = dbc.bindList(target, model,
new UpdateListStrategy(UpdateListStrategy.POLICY_ON_REQUEST),
new UpdateListStrategy(UpdateListStrategy.POLICY_ON_REQUEST));
target.add("1");
model.add("2");
List modelCopy = new ArrayList(model.size());
modelCopy.addAll(model);
assertFalse("model should not equal target", model.equals(target));
binding.updateModelToTarget();
assertEquals("model should not have changed", modelCopy, model);
assertEquals("model != target", model, target);
}
public void testGetTarget() throws Exception {
Binding binding = dbc.bindList(target, model);
assertEquals(target, binding.getTarget());
}
public void testGetModel() throws Exception {
Binding binding = dbc.bindList(target, model);
assertEquals(model, binding.getModel());
}
public void testStatusIsInstanceOfBindingStatus() throws Exception {
Binding binding = dbc.bindList(target, model);
assertTrue(binding.getValidationStatus().getValue() instanceof BindingStatus);
}
public void testAddValidationStatusContainsMultipleStatuses() throws Exception {
UpdateListStrategy strategy = new UpdateListStrategy() {
@Override
protected IStatus doAdd(IObservableList observableList,
Object element, int index) {
super.doAdd(observableList, element, index);
switch (index) {
case 0:
return ValidationStatus.error("");
case 1:
return ValidationStatus.info("");
}
return null;
}
};
Binding binding = dbc.bindList(target, model, strategy, null);
target.addAll(Arrays.asList(new String[] {"1", "2"}));
IStatus status = (IStatus) binding.getValidationStatus().getValue();
assertEquals("maximum status", IStatus.ERROR, status.getSeverity());
assertTrue("multi status", status.isMultiStatus());
IStatus[] children = status.getChildren();
assertEquals("multi status children", 2, children.length);
assertEquals("first status severity", IStatus.ERROR, children[0].getSeverity());
assertEquals("second status severity", IStatus.INFO, children[1].getSeverity());
}
public void testRemoveValidationStatusContainsMultipleStatuses() throws Exception {
List items = Arrays.asList(new String[] {"1", "2"});
model.addAll(items);
UpdateListStrategy strategy = new UpdateListStrategy() {
int count;
@Override
protected IStatus doRemove(IObservableList observableList, int index) {
super.doRemove(observableList, index);
switch (count++) {
case 0:
return ValidationStatus.error("");
case 1:
return ValidationStatus.info("");
}
return null;
}
};
Binding binding = dbc.bindList(target, model, strategy, null);
target.removeAll(items);
IStatus status = (IStatus) binding.getValidationStatus().getValue();
assertEquals("maximum status", IStatus.ERROR, status.getSeverity());
assertTrue("multi status", status.isMultiStatus());
IStatus[] children = status.getChildren();
assertEquals("multi status children", 2, children.length);
assertEquals("first status severity", IStatus.ERROR, children[0].getSeverity());
assertEquals("second status severity", IStatus.INFO, children[1].getSeverity());
}
public void testAddOKValidationStatus() throws Exception {
Binding binding = dbc.bindList(target, model);
target.add("1");
IStatus status = (IStatus) binding.getValidationStatus().getValue();
assertTrue(status.isOK());
assertEquals(0, status.getChildren().length);
}
public void testRemoveOKValidationStatus() throws Exception {
model.add("1");
Binding binding = dbc.bindList(target, model);
target.remove("1");
IStatus status = (IStatus) binding.getValidationStatus().getValue();
assertTrue(status.isOK());
assertEquals(0, status.getChildren().length);
}
/**
* we test common functionality from UpdateStrategy here, because that base
* class would need much more stubbing and mocking to test it.
*/
public void testErrorDuringConversionIsLogged() {
UpdateListStrategy modelToTarget = new UpdateListStrategy();
modelToTarget.setConverter(new IConverter() {
@Override
public Object getFromType() {
return String.class;
}
@Override
public Object getToType() {
return String.class;
}
@Override
public Object convert(Object fromObject) {
throw new IllegalArgumentException();
}
});
dbc.bindList(target, model, new UpdateListStrategy(), modelToTarget);
CountDownLatch latch = new CountDownLatch(1);
Policy.setLog(new ILogger() {
@Override
public void log(IStatus status) {
latch.countDown();
Assert.assertEquals(IStatus.ERROR, status.getSeverity());
Assert.assertTrue(status.getException() instanceof IllegalArgumentException);
}
});
model.add("first");
Assert.assertEquals(0, latch.getCount());
Policy.setLog(null);
}
/**
* we test common functionality from UpdateStrategy here, because that base
* class would need much more stubbing and mocking to test it.
*/
public void testErrorDuringRemoveIsLogged() {
IObservableList<String> target = new WritableList<String>() {
@Override
public String remove(int index) {
throw new IllegalArgumentException();
}
};
dbc.bindList(target, model, new UpdateListStrategy(), new UpdateListStrategy());
CountDownLatch latch = new CountDownLatch(1);
Policy.setLog(new ILogger() {
@Override
public void log(IStatus status) {
latch.countDown();
Assert.assertEquals(IStatus.ERROR, status.getSeverity());
Assert.assertTrue(status.getException() instanceof IllegalArgumentException);
}
});
model.add("first");
model.remove("first");
Assert.assertEquals(0, latch.getCount());
}
/**
* we test common functionality from UpdateStrategy here, because that base
* class would need much more stubbing and mocking to test it.
*/
public void testErrorDuringMoveIsLogged() {
IObservableList<String> target = new WritableList<String>() {
@Override
public String move(int index, int index2) {
throw new IllegalArgumentException();
}
};
dbc.bindList(target, model, new UpdateListStrategy(), new UpdateListStrategy());
CountDownLatch latch = new CountDownLatch(1);
Policy.setLog(new ILogger() {
@Override
public void log(IStatus status) {
latch.countDown();
Assert.assertEquals(IStatus.ERROR, status.getSeverity());
Assert.assertTrue(status.getException() instanceof IllegalArgumentException);
}
});
model.add("first");
model.add("second");
model.move(0, 1);
Assert.assertEquals(0, latch.getCount());
}
/**
* we test common functionality from UpdateStrategy here, because that base
* class would need much more stubbing and mocking to test it.
*/
public void testErrorDuringReplaceIsLogged() {
IObservableList<String> target = new WritableList<String>() {
@Override
public String set(int index, String element) {
throw new IllegalArgumentException();
}
};
dbc.bindList(target, model, new UpdateListStrategy(), new UpdateListStrategy());
CountDownLatch latch = new CountDownLatch(1);
Policy.setLog(new ILogger() {
@Override
public void log(IStatus status) {
latch.countDown();
Assert.assertEquals(IStatus.ERROR, status.getSeverity());
Assert.assertTrue(status.getException() instanceof IllegalArgumentException);
}
});
model.add("first");
model.set(0, "second");
Assert.assertEquals(0, latch.getCount());
}
/**
* test for bug 491678
*/
public void testAddListenerAndInitialSyncAreUninterruptable() {
Policy.setLog(new ILogger() {
@Override
public void log(IStatus status) {
if (!status.isOK()) {
Assert.fail("The databinding logger has the not-ok status " + status);
}
}
});
model.add("first");
new ListBinding(target, model, new UpdateListStrategy(), new UpdateListStrategy());
model.remove(0);
}
/**
* test for bug 491678
*/
public void testTargetValueIsSyncedToModelIfModelWasNotSyncedToTarget() {
target.add("first");
dbc.bindList(target, model, new UpdateListStrategy(POLICY_UPDATE), new UpdateListStrategy(POLICY_NEVER));
assertEquals(model.size(), target.size());
}
}