how do I test?

InboxHelperTest.java

public void testSendMessage() throws Exception {

        CIUser user = new CIUser();
        user.setDirectAddress("ADDRESS");
        List<CIUser> toList = new ArrayList<CIUser>();
        toList.add(user);
        String subject = "SUBJECT";
        String messageText = "MESSAGE";
        Random r = new Random();
        int forwardId = r.nextInt();
        int replyId = r.nextInt();

        class InboxHelperExt extends InboxHelper {

            @Override
            protected void doRequestWithSession(int requestMethod, String url, JSONObject jsonBody,
                    Response.Listener listener, Response.ErrorListener errorListener) {
//                super.doRequestWithSession(requestMethod, url, jsonBody, listener, errorListener);

                assertTrue(jsonBody != null);
                assertTrue(jsonBody == null);

            }

            private InboxHelperExt() {
                super();
            }
        }

        InboxHelperExt.instatiate();

        CIMessage message = new CIMessage();
        message.setSubject(subject);
        message.setToList(toList);
        message.setMessage(messageText);
        message.setForwardId(forwardId);
        message.setReplyId(replyId);

        InboxHelper.InboxHelperListener listener = new  InboxHelper.InboxHelperListener(){

            @Override
            public void onException(Exception e) {

            }

            @Override
            public void onDirectAddressFetched(String directAddress) {

            }

            @Override
            public void onMessagesFetched(List<CIMessage> messages, int remainingMessages, int unreadCount) {

            }

            @Override
            public void onMessageDeleted() {

            }

            @Override
            public void onMessageFetched(CIMessage message) {

            }

            @Override
            public void onMessageSent() {

            }

            @Override
            public void onAddressBookFetched(List<CIUser> users) {

            }
        };

        InboxHelperExt.getInstance().sendMessage(message, listener);

    }