Boolean result = invokeIsValidUploadPath(directFile, baseDir);
        assertTrue("File directly in base directory should be allowed", result);
    }

    @Test
    public void test_isValidUploadPath_edgeCase_similarPrefix() throws Exception {
        // Test directory with similar prefix (images vs images2)
        File baseDir = new File(tempDir.toFile(), "images");
        baseDir.mkdirs();