assertEquals(defaultTz, FessUserTimeZoneProcessProvider.centralTimeZone);
    }

    // Test with decimal values in string (should be handled by config)
    @Test
    public void test_decimalStringValues() {
        FessConfig decimalConfig = new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;

            @Override
            public String getTimeAdjustTimeMillis() {