Runs the test case.
Document doc;
Element newElement1;
Element newElement2;
String attribute1;
String attribute2;
doc = (Document) load("staff", true);
newElement1 = doc.createElement("ADDRESS");
newElement2 = doc.createElement("address");
newElement1.setAttribute("district", "Fort Worth");
newElement2.setAttribute("county", "Dallas");
attribute1 = newElement1.getAttribute("district");
attribute2 = newElement2.getAttribute("county");
assertEquals("attrib1", "Fort Worth", attribute1);
assertEquals("attrib2", "Dallas", attribute2);