Runs the test case.
Document doc;
NodeList elementList;
Node employeeNode;
NodeList employeeList;
int length;
int expectedCount = 0;
doc = (Document) load("staff", false);
elementList = doc.getElementsByTagName("employee");
employeeNode = elementList.item(2);
employeeList = employeeNode.getChildNodes();
length = (int) employeeList.getLength();
assertTrue("lengthIs6or13",
(equals(6, length) | equals(13, length))
);