DOMVBefore customerVisitor = new DOMVBefore();
DOMVBefore itemsVisitor = new DOMVBefore();
smooks.addVisitor(customerVisitor, "customer");
smooks.addVisitor(customerVisitor, "customer/**");
smooks.addVisitor(itemsVisitor, "items");
smooks.addVisitor(itemsVisitor, "items/**");
smooks.filterSource(new StreamSource(getClass().getResourceAsStream("order.xml")));
assertEquals("customer-user-fname-x-lname-", customerVisitor.stringBuilder.toString());
assertEquals("items-item-units-name-price-item-units-name-price-", itemsVisitor.stringBuilder.toString());