Runs the test case.
Document doc;
NodeList elementList;
Element testEmployee;
Attr streetAttr;
Attr removedAttr;
String removedValue;
doc = (Document) load("staff", true);
elementList = doc.getElementsByTagName("address");
testEmployee = (Element) elementList.item(2);
streetAttr = testEmployee.getAttributeNode("street");
removedAttr = testEmployee.removeAttributeNode(streetAttr);
removedValue = removedAttr.getValue();
assertEquals("elementRemoveAttributeNodeAssert", "No", removedValue);