Horde_Notification_Handler::clear PHP Method

    public function clear($listener = null)
    {
        if (is_null($listener)) {
            $this->_storage->clear('_unattached');
        } elseif ($ob = $this->getListener($listener)) {
            $this->_storage->clear($ob->getName());
        }
    }

 public function testMethodClearHasPostconditionThatAllUnattachedEventsHaveBeenClearedFromStorageIfNoListenerWasSpecified()
 {
     $storage = $this->getMock('Horde_Notification_Storage_Interface');
     $storage->expects($this->once())->method('clear')->with('_unattached');
     $handler = new Horde_Notification_Handler($storage);
     $handler->clear();
 }