Runs the test case.
Document doc;
NodeList elementList;
Node addressNode;
Text textNode;
Text splitNode;
String value;
doc = (Document) load("staff", true);
elementList = doc.getElementsByTagName("address");
addressNode = elementList.item(0);
textNode = (Text) addressNode.getFirstChild();
splitNode = textNode.splitText(30);
value = splitNode.getNodeValue();
assertEquals("textSplitTextFourAssert", "98551", value);