FessConfig config = ComponentUtil.getFessConfig();
        assertEquals("false", config.getApiJsonResponseExceptionIncluded());
    }

    // Test error code generation
    @Test
    public void test_errorCodeGeneration() {
        long timestamp = System.currentTimeMillis();
        String errorCode = "error_code:" + Long.toHexString(timestamp);

        assertTrue(errorCode.startsWith("error_code:"));