/*
* Copyright 2007 Sandy McArthur, Jr.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package org.mcarthur.sandy.gwt.event.list.test;
import org.mcarthur.sandy.gwt.event.list.client.EventList;
import org.mcarthur.sandy.gwt.event.list.client.EventLists;
import org.mcarthur.sandy.gwt.event.list.client.ListEvent;
import org.mcarthur.sandy.gwt.event.list.client.ListEventListener;
import org.mcarthur.sandy.gwt.event.list.client.RangedEventList;
import java.util.ArrayList;
import java.util.List;
/**
* Tests for the steady {@link org.mcarthur.sandy.gwt.event.list.client.RangedEventList}.
*
* @author Sandy McArthur
*/
public class SteadyRangedEventListTest extends RangedEventListTest {
protected EventList createEmptyEventLists() {
return createBackedEventList(EventLists.eventList());
}
protected EventList createBackedEventList(final EventList el) {
return EventLists.steadyRangedEventList(el);
}
public void testAddBeforeRangeStart() {
// Insert before start doesn't affect visible elements
final EventList el = EventLists.eventList();
prefillWithIntegers(el, 100);
final RangedEventList rel = createBackedRangedEventList(el);
rel.setStart(10);
rel.setMaxSize(10);
final ListEventListener lel = new ListEventListener() {
private int count = 0;
public void listChanged(final ListEvent listEvent) {
switch (count++) {
case 0:
assertEquals(ListEvent.createOther(rel), listEvent);
break;
default:
fail("Unexpected: " + listEvent);
}
}
};
rel.addListEventListener(lel);
el.add(0, "one");
rel.removeListEventListener(lel);
}
public void testRemoveBeforeStartOfRange() {
final EventList el = EventLists.eventList();
final RangedEventList rel = createBackedRangedEventList(el);
prefillWithIntegers(el, 10);
rel.setStart(5);
rel.setMaxSize(100);
el.remove(0);
assertEquals(4, rel.getStart());
assertEquals(5, rel.size());
}
public void testRemoveBeforeRangeStart() {
// all elements are shifted up one
final EventList el = EventLists.eventList();
prefillWithIntegers(el, 100);
final RangedEventList rel = createBackedRangedEventList(el);
rel.setStart(10);
rel.setMaxSize(10);
assertEquals(10, rel.size());
// if the max size is in effect, the last element(s) is removed and the first is added
ListEventListener lel = new ListEventListener() {
private int count = 0;
public void listChanged(final ListEvent listEvent) {
switch (count++) {
case 0:
assertEquals(ListEvent.createOther(rel), listEvent);
break;
case 1:
assertNull(listEvent);
break;
default:
fail("Unexpected: " + listEvent);
}
}
};
rel.addListEventListener(lel);
el.remove(0);
assertEquals(10, rel.size());
lel.listChanged(null);
rel.removeListEventListener(lel);
// if max size doesn't have an effect then element(s) are removed before the start
rel.setMaxSize(Integer.MAX_VALUE);
lel = new ListEventListener() {
private int count = 0;
public void listChanged(final ListEvent listEvent) {
switch (count++) {
case 0:
assertEquals(ListEvent.createOther(rel), listEvent);
break;
case 1:
assertNull(listEvent);
break;
default:
fail("Unexpected: " + listEvent);
}
}
};
rel.addListEventListener(lel);
el.remove(0);
lel.listChanged(null);
rel.removeListEventListener(lel);
}
public void testRemoveRangeSpanningStartOfRange() {
final EventList el = EventLists.eventList();
final RangedEventList rel = createBackedRangedEventList(el);
for (int i=0; i < 10; i++) {
el.add(new Integer(i));
}
rel.setStart(5);
final List middle = new ArrayList();
for (int i=3; i < 7; i++) {
middle.add(el.get(i));
}
el.removeAll(middle);
assertEquals(3, rel.getStart());
assertEquals(3, rel.size());
}
public void testRemoveAfterStartOfRange() {
final EventList el = EventLists.eventList();
final RangedEventList rel = createBackedRangedEventList(el);
for (int i=0; i < 10; i++) {
el.add(new Integer(i));
}
rel.setStart(5);
el.remove(8);
assertEquals(5, rel.getStart());
assertEquals(4, rel.size());
}
}