### Question:
LoginInteractorImpl implements LoginInteractor { @Override public void doSignUp(String email, String password) { mRepository.signUp(email, password); } LoginInteractorImpl(); @VisibleForTesting  LoginInteractorImpl(LoginRepository repository); @Override void doSignIn(String email, String password); @Override void doSignUp(String email, String password); @Override void doCheckAuthenticated();  }### Answer:
@Test public void testDoSignUp() throws Exception { mImplementor.doSignUp("baldomero", "llegateligero"); verify(mRepository).signUp("baldomero", "llegateligero"); }