List<String> auUrls(ArchivalUnit au) {
   List<String> res = new ArrayList<String>();
   for (Iterator iter = au.getAuCachedUrlSet().contentHashIterator(); iter.hasNext(); ) {
     CachedUrlSetNode cusn = (CachedUrlSetNode) iter.next();
     if (cusn.hasContent()) {
       res.add(cusn.getUrl());
     }
   }
   return res;
 }
  public void testArticleCountAndType() throws Exception {
    int expCount = 28;
    PluginTestUtil.crawlSimAu(sau);
    String pat1 = "branch(\\d+)/(\\d+file\\.html)";
    String rep1 = "aps/journal/v123/n$1/full/$2";
    PluginTestUtil.copyAu(sau, nau, ".*[^.][^p][^d][^f]$", pat1, rep1);
    String pat2 = "branch(\\d+)/(\\d+file\\.pdf)";
    String rep2 = "aps/journal/v123/n$1/pdf/$2";
    PluginTestUtil.copyAu(sau, nau, ".*\\.pdf$", pat2, rep2);

    // Remove some URLs
    int deleted = 0;
    for (Iterator it = nau.getAuCachedUrlSet().contentHashIterator(); it.hasNext(); ) {
      CachedUrlSetNode cusn = (CachedUrlSetNode) it.next();
      if (cusn instanceof CachedUrl) {
        CachedUrl cu = (CachedUrl) cusn;
        String url = cu.getUrl();
        if (url.contains("/journal/")
            && (url.endsWith("1file.html") || url.endsWith("2file.pdf"))) {
          deleteBlock(cu);
          ++deleted;
        }
      }
    }
    assertEquals(8, deleted);

    Iterator<ArticleFiles> it = nau.getArticleIterator();
    int count = 0;
    int countHtmlOnly = 0;
    int countPdfOnly = 0;
    while (it.hasNext()) {
      ArticleFiles af = it.next();
      log.info(af.toString());
      CachedUrl cu = af.getFullTextCu();
      String url = cu.getUrl();
      assertNotNull(cu);
      String contentType = cu.getContentType();
      log.debug("count " + count + " url " + url + " " + contentType);
      count++;
      if (af.getRoleUrl(ArticleFiles.ROLE_FULL_TEXT_PDF) == null) {
        ++countHtmlOnly;
      }
      if (af.getRoleUrl(ArticleFiles.ROLE_FULL_TEXT_PDF) == url) {
        ++countPdfOnly;
      }
    }
    log.debug("Article count is " + count);
    assertEquals(expCount, count);
    assertEquals(4, countHtmlOnly);
    assertEquals(4, countPdfOnly);
  }