@Override
    public void onNotificationClearRequest(int id) {
        final NotificationManager notificationManager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.cancel(id);
    }
@Test
    public void onNotificationClearRequest_clearSpecificNotification() throws Exception {
        createUUT().onNotificationClearRequest(666);
        verify(mNotificationManager).cancel(eq(666));
        verify(mNotificationManager, never()).cancelAll();
    }