Runs the test case.
Document doc;
NodeList elementList;
NodeList childList;
Node employeeNode;
Node textNode;
int length;
doc = (Document) load("hc_staff", false);
elementList = doc.getElementsByTagName("em");
employeeNode = elementList.item(1);
textNode = employeeNode.getFirstChild();
childList = textNode.getChildNodes();
length = (int) childList.getLength();
assertEquals("length_zero", 0, length);