Test Servlet Using Cactus

[princeOfMountain]

Hi I have the following servlet method which I want to test using Cactus
I am a newbie so I will really appreciate any helpful tips:

public DSResponse executeFetch(DSRequest req) throws Exception {
DSResponse resp = new DSResponse();
String maID = (String) req.getCriteria().get("memberActivityID");
MemberActivityImpl memberImpl = new MemberActivityImpl();
MemberActivity memberAct = new MemberActivity();
if (req.getDataSourceName().equals("memberActivity")) {
if (maID != null) {
// Fetch the MemberActivity based on the memberActivityID criteria
memberAct = memberImpl.getMemberActivity(maID);
List<Map> resultList = new LinkedList<Map>();

if( memberAct != null && memberAct.getMemberID() != null )
{
// Pass the memberAct to the client
Map<String, Object> result = new HashMap<String, Object>();
result.put("name", memberAct.getName());
result.put("type", memberAct.getType());
result.put("memberID", memberAct.getMemberID());
if (memberAct.getGoal() != null) {
result.put("goal", memberAct.getGoal());
}
resultList.add(result);}
resp.setData(resultList);
} else {
resp.setFailure();}