assertFalse(fessConfig.isExtensionAllowed("pdf"));
        assertFalse(fessConfig.isExtensionAllowed("doc"));
    }

    // Test available extensions
    public void test_getAvailableExtensions() {
        String[] extensions = fessConfig.getAvailableExtensions();
        assertEquals(4, extensions.length);
        assertEquals("jpg", extensions[0]);
        assertEquals("jpeg", extensions[1]);