public function testModifyPreferences()
{
$p = new Horde_Prefs('horde', array(self::$prefs));
$p['theme'] = "barbie";
$p->store();
$this->assertEquals("barbie", $this->_readValue(self::$db->selectValue('SELECT pref_value FROM horde_prefs WHERE pref_uid = ? AND pref_scope = ? AND pref_name = ?', array('joe', 'horde', 'theme'))));
}