public void testOwnerElement() {
// get e5
OMElement e5 = dp.omDocEle.getFirstChildWithName(new QName("http://example.org","e5"));
// get the wrapped element of e5
Element e = (Element)dp.fac.getNode(e5);
// attr is a:attr="out"
attr = (Attr)e.getAttributes().item(0);
// the getOwnerElement() should provide a reference to the same object pointed by reference e
assertEquals(e, attr.getOwnerElement());
}