Spring overrided AbstractXlsView.createWorkbook method is not called as supposed

I have two tests: for controller and view with overrided method createWorkbook.

Specifically I am testing download of xls document in controller while the document is created as view based on AbstractXlsView. It works fine with view set as autowired - corresponding ModelAndView is created and my overrided createWorkbook method is called.

However after I have tried to test the view directly the above method is not called and hence the test cannot be performed correctly (there is probably called default createWorkbook, but not my overrided method).

Where can be the root problem?