public void Should_Remove_Screen_From_Stack()
{
_stack.Clear();
_stack.Add(_screen);
_stack.Remove(_screen);
Assert.IsNotNull(_stack.Screens);
Assert.IsTrue(_stack.Screens.Count == 0);
}
public void CloseScreen()
{
_transition.ExecuteTransition(_stack.CurrentScreen, _stack.PreviousScreen);
_stack.Remove(_stack.CurrentScreen);
}