    public function testClearTags () {
        $contact = $this->contacts ('testAnyone');
        Yii::app()->db->createCommand ("
            delete from x2_tags where type='Contacts' and itemId=:id
        ")->execute (array (':id' => $contact->id));
        $tags = array ('test', 'test2', 'test3');
        $contact->addTags ($tags);
        $contact->clearTags ();
        $this->assertEquals (array (), $contact->getTags (true));
    }
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.