code:     public void testRedirectActionPrefixWithEmptyExtension() throws Exception {
          Map parameterMap = new HashMap();
          parameterMap.put(DefaultActionMapper.REDIRECT_ACTION_PREFIX + "myAction", "");
  
          StrutsMockHttpServletRequest request = new StrutsMockHttpServletRequest();
          request.setupGetServletPath("/someServletPath");
          request.setParameterMap(parameterMap);
  
          DefaultActionMapper defaultActionMapper = new DefaultActionMapper();
          defaultActionMapper.setContainer(container);
          defaultActionMapper.setExtensions(",,");
          ActionMapping actionMapping = defaultActionMapper.getMapping(request, configManager);
  
  
          StrutsResultSupport result = (StrutsResultSupport) actionMapping.getResult();
          assertNotNull(result);
          assertTrue(result instanceof ServletRedirectResult);
  
          assertEquals("myAction", result.getLocation());
  
          // TODO: need to test location but there's noaccess to the property/method, unless we use reflection
      }
  
  