private ShownHandler shownHandler;
@Test
public void testAlertBase() {
// onAttach
GwtBootstrapModule module = new GwtBootstrapModule();
module.onModuleLoad();
Alert alert = module.getWidget().getAlert();
final CloseHandler<AlertBase> closeHandler = mock(CloseHandler.class);
alert.addCloseHandler(closeHandler);
final ClosedHandler<AlertBase> closedHandler = mock(ClosedHandler.class);