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

    // Test with whitespace-only Origin header
    @Test
    public void test_doFilter_whitespaceOriginHeader() throws IOException, ServletException {
        mockRequest.setHeader("Origin", "   ");

        corsFilter.doFilter(mockRequest, mockResponse, mockFilterChain);