}
        });

        MockletHttpServletRequest request = getMockRequest();
        request.setAttribute(FessConfig.VIRTUAL_HOST_VALUE, "cached_value");

        String key = virtualHostHelper.getVirtualHostKey();
        assertEquals("cached_value", key);
    }

    @Test
    public void test_processVirtualHost() {
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {