public void testAddListChangeEvent() throws Exception {
ListChangeEventTracker listener = new ListChangeEventTracker();
list.addListChangeListener(listener);
assertEquals(0, listener.count);
String element = "1";
list.add(element);
assertEquals(1, listener.count);
ListChangeEvent event = listener.event;
assertSame(list, event.getObservableList());
assertDiff(event.diff, Collections.EMPTY_LIST, Collections.singletonList("1"));
}
public void testAddAllListChangEvent() throws Exception {
List elements = Arrays.asList(new String[] {"1", "2"});
assertEquals(0, list.size());
ListChangeEventTracker listener = new ListChangeEventTracker();
list.addListChangeListener(listener);
assertEquals(0, listener.count);
list.addAll(elements);
assertEquals(1, listener.count);
ListChangeEvent event = listener.event;
assertSame(list, event.getObservableList());
assertDiff(event.diff, Collections.EMPTY_LIST, Arrays.asList(new String[] {"1", "2"}));
}
public void testSetListChangeEvent() throws Exception {
String oldElement = "old";
String newElement = "new";
list.add(oldElement);
ListChangeEventTracker listener = ListChangeEventTracker.observe(list);
assertEquals(0, listener.count);
list.set(0, newElement);
assertEquals(1, listener.count);
ListChangeEvent event = listener.event;
assertSame(list, event.getObservableList());
assertDiff(
event.diff, Collections.singletonList(oldElement), Collections.singletonList(newElement));
}
public void testRetainAllListChangeEvent() throws Exception {
List elements = Arrays.asList(new String[] {"0", "1", "2", "3"});
list.addAll(elements);
ListChangeEventTracker listener = new ListChangeEventTracker();
list.addListChangeListener(listener);
assertEquals(0, listener.count);
list.retainAll(elements.subList(0, 2));
assertEquals(1, listener.count);
ListChangeEvent event = listener.event;
assertSame(list, event.getObservableList());
assertDiff(
event.diff,
Arrays.asList(new Object[] {"0", "1", "2", "3"}),
Arrays.asList(new Object[] {"0", "1"}));
}
@Override
public void handleListChange(ListChangeEvent event) {
assertThat(event.getObservable(), sameInstance((IObservable) fixture));
diff = event.diff;
}