@Test
    public void test_doFilter_noCorsHandler() throws IOException, ServletException {
        mockRequest.setHeader("Origin", "http://example.com");
        corsHandlerFactory.setHandler(null);

        corsFilter.doFilter(mockRequest, mockResponse, mockFilterChain);

        assertTrue(mockFilterChain.wasDoFilterCalled());
        assertTrue(corsHandlerFactory.wasGetCalled());