TestBean bean = new TestBean();
SimpleDateFormat dateFormat = new SimpleDateFormat("dd-MM-yyyy");
Date expected = dateFormat.parse("06-03-2006");
MockPortletRequest request = new MockPortletRequest();
request.addParameter("date", "06-03-2006");
PortletRequestDataBinder binder = new PortletRequestDataBinder(bean);
binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, false));
binder.bind(request);