urlQueue.setDepth(1);
        urlQueue.setMethod("GET");
        urlQueue.setSessionId("id1");
        urlQueue.setUrl("http://www.id1.com/");

        urlQueueService.insert(urlQueue);

        final OpenSearchUrlQueue urlQueue2 = new OpenSearchUrlQueue();
        urlQueue2.setCreateTime(System.currentTimeMillis());
        urlQueue2.setDepth(1);
        urlQueue2.setMethod("GET");

        UrlQueueImpl<Long> queue = new UrlQueueImpl<>();

        queue.setDepth(0);
        assertEquals(Integer.valueOf(0), queue.getDepth());

        queue.setDepth(5);
        assertEquals(Integer.valueOf(5), queue.getDepth());

        queue.setDepth(null);
        assertNull(queue.getDepth());
    }

    public void test_lastModifiedGetterSetter() {

        return scope;
    }

    public void setScope(ArtifactScopeEnum scope) {
        this.scope = scope;
    }

    public int getDepth() {
        return depth;
    }

    public void setDepth(int depth) {
        this.depth = depth;
    }

    public boolean isResolved() {
        return resolved;
    }

    public void setResolved(boolean resolved) {

     *
     * @see org.codelibs.fess.crawler.entity.UrlQueue#getDepth()
     */
    @Override
    public Integer getDepth() {
        return depth;
    }

    /*
     * (non-Javadoc)
     *
     * @see org.codelibs.fess.crawler.entity.UrlQueue#setDepth(java.lang.Integer)
     */
    @Override
    public void setDepth(final Integer depth) {
        this.depth = depth;
    }

    /*

     */
    public void test_isValid_validUrlQueue() throws Exception {
        final UrlQueue<?> urlQueue = new UrlQueueImpl<>();
        urlQueue.setUrl("http://example.com/");
        urlQueue.setDepth(1);

        when(urlFilter.match(anyString())).thenReturn(true);

        // Use reflection to access protected method

            final UrlQueueImpl<Long> urlQueue = new UrlQueueImpl<>();
            urlQueue.setSessionId(sessionId);
            urlQueue.setMethod(Constants.GET_METHOD);
            urlQueue.setUrl(url);
            urlQueue.setDepth(0);
            urlQueue.setCreateTime(SystemUtil.currentTimeMillis());
            urlQueueList.add(urlQueue);
        }
    }

    /*
     * (non-Javadoc)
     *
     * @see

     * Retrieves the depth of the URL in the queue.
     *
     * @return the depth of the URL as an Integer.
     */
    Integer getDepth();

    /**
     * Sets the depth of the URL in the queue.
     *
     * @param depth the depth to set, represented as an Integer.
     */
    void setDepth(Integer depth);

    /**
     * Returns the last modified timestamp of the URL in the queue.
     *

            result.setCreatedBy(DfTypeUtil.toString(source.get("createdBy")));
            result.setCreatedTime(DfTypeUtil.toLong(source.get("createdTime")));
            result.setDepth(DfTypeUtil.toInteger(source.get("depth")));
            result.setDescription(DfTypeUtil.toString(source.get("description")));
            result.setExcludedDocUrls(DfTypeUtil.toString(source.get("excludedDocUrls")));

        urlQueue.setSessionId(sessionId);
        urlQueue.setUrl(url);
        urlQueue.setCreateTime(System.currentTimeMillis());
        urlQueue.setLastModified(0L);
        urlQueue.setDepth(0);
        urlQueue.setMethod(Constants.GET_METHOD);
        insert(urlQueue);
    }

    /**
     * Inserts a URL queue entry into the OpenSearch index.
     *

                                // redirect
                                storeChildUrl(responseData.getRedirectLocation(), urlQueue.getUrl(), urlQueue.getWeight(),
                                        urlQueue.getDepth() == null ? 1 : urlQueue.getDepth() + 1);
                            }
                        }

                        log(logHelper, LogType.FINISHED_CRAWLING, crawlerContext, urlQueue);