final String url = dataMap.get(fessConfig.getIndexFieldUrl()).toString();

        if (fessConfig.getIndexerClickCountEnabledAsBoolean()) {
            addClickCountField(dataMap, url, fessConfig.getIndexFieldClickCount());
        }

        if (fessConfig.getIndexerFavoriteCountEnabledAsBoolean()) {

    // Test addClickCountField without URL
    @Test
    public void test_addClickCountField_withoutUrl() {
        final Map<String, Object> doc = new HashMap<>();

        indexUpdater.addClickCountField(doc);

        assertNull(doc.get("click_count"));
    }

    // Test addClickCountField with blank URL
    @Test
    public void test_addClickCountField_blankUrl() {

    }

    @Test
    public void test_addClickCountField() {
        searchLogHelper.clickCount = 42;

        Map<String, Object> doc = new HashMap<>();
        indexUpdateCallback.addClickCountField(doc, "http://example.com", "click_count");

        assertEquals(42, doc.get("click_count"));
    }

    @Test
    public void test_addFavoriteCountField() {
        searchLogHelper.favoriteCount = 99L;

    protected void updateDocument(final Map<String, Object> map) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

        if (fessConfig.getIndexerClickCountEnabledAsBoolean()) {
            addClickCountField(map);
        }

        if (fessConfig.getIndexerFavoriteCountEnabledAsBoolean()) {
            addFavoriteCountField(map);
        }

        float documentBoost = 0.0f;