public void ForceAuthentication()
{
// given
var authenticationPresenterFactory = new Mock<IAuthenticationPresenterFactory>();
var authenticationPresenter = new Mock<IAuthenticationPresenter>();
authenticationPresenterFactory.Setup(f => f.create()).Returns(authenticationPresenter.Object);
var presenter = new ApplicationPresenter(authenticationPresenterFactory);
// when
presenter.OnViewShown();
// then
authenticationPresenter.Verify(p => p.ShowView());
}