public function testChildren()
 {
     $child = new Forum();
     $forum = new Forum();
     $child->setId(3);
     $child->setName('I am the child');
     $forum->setChildren($child);
     $children = $forum->getChildren();
     $this->assertEquals($child, $children[0]);
 }
 private static function parseTopicsDetails($item)
 {
     $crawler = new Crawler($item);
     if ($crawler->filter('td')->count() >= 4) {
         $topics = new Forum();
         # id.
         # Example:
         # <span id="wt439011">...</span>
         $topics->setId(str_replace('/forum/?topicid=', '', $crawler->filter('td[class="forum_boardrow1"] a')->attr('href')));
         //->filter('span')->attr('id')));
         # name.
         # Example:
         # <a href="/forum/?topicid=439011">BBCode Fixes</a>
         $topics->setName($crawler->filter('td[class="forum_boardrow1"] a')->text());
         # username.
         # Example:
         # <a href="/profile/ratan12">ratan12</a>
         $topics->setUsername(str_replace('?board=', '', $crawler->filter('span[class="forum_postusername"] a')->text()));
         # replies.
         # Example:
         # <td align="center" width="75" class="forum_boardrow2" style="border-width: 0px 1px 1px 0px;">159</td>
         $topics->setReplies(str_replace('?board=', '', $crawler->filter('td[class="forum_boardrow2"]')->eq(1)->text()));
         # creation time.
         # Example:
         # <span class="lightLink">Jun 25, 2008</span>
         $topics->setTime($crawler->filter('span[class="lightLink"]')->text());
         //note: eq(1) is the second node and !first.
         $username = $crawler->filter('td[class="forum_boardrow1"]')->eq(1)->filter('a')->text();
         $time = explode("»»", $crawler->filter('td[class="forum_boardrow1"]')->eq(1)->text());
         $topics->setReply(array('username' => $username, 'time' => Date::formatTime($time[1])));
         return $topics;
     } else {
         return;
     }
 }