Runs the test case.
Document doc;
NodeList acronymList;
Node testNode;
NamedNodeMap attributes;
Attr titleAttr;
String value;
Text textNode;
NodeList childNodes;
Node retval;
doc = (Document) load("hc_staff", true);
acronymList = doc.getElementsByTagName("acronym");
testNode = acronymList.item(3);
attributes = testNode.getAttributes();
titleAttr = (Attr) attributes.getNamedItem("title");
childNodes = titleAttr.getChildNodes();
textNode = doc.createTextNode("terday");
retval = titleAttr.appendChild(textNode);
assertSize("childNodesSize", 2, childNodes);
textNode = (Text) childNodes.item(0);
value = textNode.getNodeValue();
assertEquals("child1IsYes", "Yes", value);
textNode = (Text) childNodes.item(1);
value = textNode.getNodeValue();
assertEquals("child2IsTerday", "terday", value);
textNode = (Text) childNodes.item(2);
assertNull("thirdItemIsNull", textNode);