/** Tests that adding and removing a container will fire the correct event from the query. */
public void testContainerFiresEvent() throws Exception {
CountingChangeListener listener = new CountingChangeListener();
QueryImpl query = new QueryImpl(new StubDatabaseMapping());
query.addQueryChangeListener(listener);
Container container = new ItemContainer("container");
Item item = new StringItem("name");
container.addItem(item);
assertEquals(0, listener.getContainerAddedCount());
query.addTable(container);
assertEquals(1, listener.getContainerAddedCount());
QueryChangeEvent evt = listener.getLastQueryChangeEvent();
assertEquals(container, evt.getContainerChanged());
assertEquals(query, evt.getSource());
assertEquals(0, listener.getContainerRemovedCount());
query.removeTable(container);
assertEquals(1, listener.getContainerRemovedCount());
evt = listener.getLastQueryChangeEvent();
assertEquals(container, evt.getContainerChanged());
assertEquals(query, evt.getSource());
}
