public function testAddTag()
{
$db = Zend_Registry::get('db');
$new_note_id = Zend_Registry::get('new_note_id');
$note = new Database_Notes($db);
$note->load($new_note_id);
// $tag_id = $note->createTag('new tag');
$tag_name = 'new new tag';
Zend_Registry::set('tag_name', $tag_name);
//创建一个新tag
$new_tag_id = $note->addTag($tag_name);
//为调用tagIsExistInThisNote ,需要 reload
$note->load($new_note_id);
//断言刚添加tag的name
$this->assertTrue($note->tagIsExistInThisNote($tag_name));
//检查tagNameToId和tagIdToname是否运转正确
$this->assertEquals($new_tag_id, $note->tagNameToId($tag_name));
$this->assertEquals($tag_name, $note->tagIdToname($new_tag_id));
$this->dispatch("/");
Zend_Registry::set('new_tag_id', $new_tag_id);
}