// Test Unicode configuration is enabled by default
        assertTrue(cfg.isUseUnicode(), "Unicode should be enabled by default");
    }

    @Test
    public void testAsciiConfiguration() throws Exception {
        Configuration asciiCfg = new OffUnicodeConfig();
        assertFalse(asciiCfg.isUseUnicode(), "Unicode should be disabled in ASCII config");
    }

    @Test