#fixed code
                                @Test(expected = IllegalArgumentException.class)
    public void testDecorateCORSPropertiesValidRequestNullRequestType() {
        MockHttpServletRequest request = new MockHttpServletRequest();
        CORSFilter.decorateCORSProperties(request, null);
    }
#vulnerable code 
                                @Test(expected = IllegalArgumentException.class)
    public void testDecorateCORSPropertiesValidRequestNullRequestType() {
        HttpServletRequest request =
                EasyMock.createMock(HttpServletRequest.class);
        EasyMock.replay(request);
        CORSFilter.decorateCORSProperties(request, null);
    } 
                            #location 6 
                            #vulnerability type NULL_DEREFERENCE