Runs the test case.
Document doc;
Document newDoc;
DOMImplementation domImpl;
DocumentType nullDocType = null;
NodeList childList;
Node imported;
Node employeeElem;
Attr attrNode;
String attrValue;
String nullNS = null;
doc = (Document) load("staffNS", true);
childList = doc.getElementsByTagNameNS("*", "employee");
employeeElem = childList.item(3);
domImpl = getImplementation();
newDoc = domImpl.createDocument(nullNS, "staff", nullDocType);
imported = newDoc.importNode(employeeElem, true);
attrNode = ((Element) /*Node */imported).getAttributeNodeNS(nullNS, "defaultAttr");
assertNull("defaultAttrNotImported", attrNode);
attrValue = ((Element) /*Node */imported).getAttributeNS("http://www.w3.org/2000/xmlns/", "emp");
assertEquals("explicitAttrImported", "http://www.nist.gov", attrValue);