android testing. How to do something before activity creation?

Question

Android

Greetings. I'm learning texting.
The following situation has arisen: you need to test the login screen. If the application is launched first, everything is OK, if not, the settings are saved and login occurs automatically after the application is launched. Because of this, the tests do not have time to pass, as another activity opens.
I would like to reset the settings before launching the activity. But here is the problem, in the test class, the activity is launched immediately in the constructor, and the constructor is strictly required. Is there a way out of this situation?

public class StartActivityTest extends ActivityInstrumentationTestCase2<StartActivity>{

    StartActivity activity;

    public StartActivityTest() {
        super(StartActivity.class);  // тут происходит запуск. Хотелось бы сбросить настройки до этого запуска.
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        activity = getActivity();
    }

    @SmallTest
    public void testTest(){
        assertEquals("4", "5");
    }
}