// Assert the full error message is in the result
        assertTrue(result.contains(errorMessage));
        assertTrue(result.endsWith("\n"));
    }

    @Test
    public void test_execute_withSpecialCharactersInConfig() {
        // Configure field and index names with special characters
        expiresFieldName = "expires-field.with@special#chars";
        documentUpdateIndex = "fess.update-index$special%chars";