config.url = "testurl";
config.debugMode = true;
config.useCompression = false;
config.trackingHeader.add(header);
final JsonDispatcher disp = new JsonDispatcher(config);
assertTrue(!callback.errorCalled);
assertTrue(null == callback.output);
assertTrue(disp.dispatch(acc));
assertTrue(!callback.errorCalled);
try {
final String output = "{\"data\":[" + header.toJSON() + "," + event.toJSON() + "]}";
assertArrayEquals(output.getBytes("UTF-8"), callback.output);