protected boolean isUseOneTimeContainer() {
        return true;
    }

    public void test_setFessConfig_null() {
        assertTrue(FessProp.propMap.isEmpty());
    }

    public void test_setFessConfig_notNull() {
        FessConfig mockConfig = new FessConfig.SimpleImpl();
        ComponentUtil.setFessConfig(mockConfig);
        assertSame(mockConfig, ComponentUtil.getFessConfig());
    }