How to check an anonymous inner class that calls a private method

Question

We have a bunch of classes that listen for events from the server and then respond to them. For instance:

class EventManager {
    private Set<Event> cache = new HashSet<Event>();

    private EventListener eventListener = new EventListener() {
        void onEvent(Event e) {
          if (e instanceof MyEvent || e instanceof YourEvent) {
            handleEvent(e);
          }  
        }
    }

    public EventManager(ServerCommunication serverComm) {
        serverComm.addListener(eventListener);
    }

    private handleEvent(Event e) {
        // handle the event...
        // ...
        cache.add(cache);
        // ...
    }
}

Here is an example of what we are doing. Here are the problems I see:

• I would like to check handleEvent to make sure that it does what it should, but I cannot because it is closed.
• I would also like to check that something has been added to the cache, but it also seems difficult, since the cache is a private member and I do not want to add an unnecessary getter method.
• I would also like to test the code inside the method of the anonymous onEvent class.

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Answer 1

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