private CorsFilter corsFilter;
    private TestCorsHandlerFactory corsHandlerFactory;
    private TestHttpServletRequest mockRequest;
    private TestHttpServletResponse mockResponse;
    private TestFilterChain mockFilterChain;

    @Override
    public void setUp() throws Exception {
        super.setUp();
        corsFilter = new CorsFilter();
        corsHandlerFactory = new TestCorsHandlerFactory();
        // Initialize mocks