Runs the test case.
Document doc;
NodeList elementList;
Node testAddress;
NamedNodeMap attributes;
Attr streetAttr;
boolean specified;
Node removedNode;
doc = (Document) load("staff", true);
elementList = doc.getElementsByTagName("address");
testAddress = elementList.item(2);
attributes = testAddress.getAttributes();
assertNotNull("attributesNotNull", attributes);
removedNode = attributes.removeNamedItem("street");
streetAttr = (Attr) attributes.getNamedItem("street");
assertNotNull("streetAttrNotNull", streetAttr);
specified = streetAttr.getSpecified();
assertFalse("attrNotSpecified", specified);