How to test AsyncTask triggered by a click?

Issue

If the AsyncTask is triggered by a click event on a button, how can I test it - how can I wait until the AsyncTask completes?

Note I can always execute the AsyncTask directly in my test method, I know how to test such scenario. However, if I insist on on using simulating the onClick event using performClick() can I still test my registration process?

MainActivityFunctionalTest

public class MainActivityFunctionalTest extends
            ActivityInstrumentationTestCase2<MainActivity> {
    // ...
        public void testRegistration() {
        ImageButton submitBtn = (ImageButton) solo.getView(R.id.BtnR);
        assertNotNull(submitBtn);


        submitBtn.performClick();
                // How to do something when the registration is done?
        }
    // ...
    } 

MainActivity (of the project to be tested)

ImageButton submitBtn = (ImageButton) findViewById(R.id.BtnRegister);
submitBtn.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                sendRegistration();
            }
        });

public void sendRegistration() {
        Processor processor = new Processor();// subclass of AsyncTask
        processor.execute();
    }

Solution

you can do :

myAsyn obj = new myAsyn();
obj.execute();

while(obj.getStatus()==AsynTask.status.Finished)
{
//wait here
}

//when it finishes , this code will going to execute.

Answered By - Waqar Ahmed