// Verify default values work for new instance
        assertEquals("warm", newInstance.getLastaDiSmartDeployMode());
    }

    // Test edge cases for mail configuration
    public void xtest_mailConfiguration_edgeCases() {
        // Test with empty host and port
        FessEnv.SimpleImpl emptyMailEnv = new FessEnv.SimpleImpl() {
            protected Properties prepareProperties() {