Android Espresso navigating back to an activity

Question

I am testing if form data is retained or not when back key is pressed and user navigates back to the form Activity.

Expected Flow: Press Register Button -> Goto Form page and fill it up -> Press back button -> Press Register Button -> Verify form data is retained

Actual Flow: Espresso launches Form Page -> Press back button -> App Quits

Espresso start from Form Page because that's how the ActivityRule is defined.

public ActivityTestRule<RegisterActivity> mActivity = new ActivityTestRule<>(RegisterActivity.class);

I tried to startActivity() for the Registration Button page, but when I press back, it navigates back to the empty Form Page.

  Intent intent = new Intent(mActivity.getActivity(), RegisterButton.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
        oActivity.getActivity().startActivity(intent);

Answer 1

    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);