Runs the test case.
Document doc;
NodeList elementList;
Node employeeNode;
NodeList childList;
Node createdNode;
Node lchild;
String childName;
Node appendedChild;
doc = (Document) load("staff", true);
elementList = doc.getElementsByTagName("employee");
employeeNode = elementList.item(1);
childList = employeeNode.getChildNodes();
createdNode = doc.createElement("newChild");
appendedChild = employeeNode.appendChild(createdNode);
lchild = employeeNode.getLastChild();
childName = lchild.getNodeName();
assertEquals("nodeAppendChildAssert1", "newChild", childName);