* Enable a single type, all others should be disabled.
*/
public void testEnableType()
{
NotificationFilterSupport nfs = new NotificationFilterSupport();
nfs.enableType("type1plus");
assertEquals(false, nfs.isNotificationEnabled(n1));
assertEquals(false, nfs.isNotificationEnabled(n2));
assertEquals(true, nfs.isNotificationEnabled(n3));
assertEquals(false, nfs.isNotificationEnabled(n4));
assertEquals(false, nfs.isNotificationEnabled(n5));