/**
* Test method for the <tt>getWP()</tt> and <tt>setWP($wP)</tt> functions.
*/
public function testGetSetWP()
{
$notification = new Notification();
$this->assertNull($notification->getWP());
$wP = new WP();
$this->assertSame($notification, $notification->setWP($wP));
$this->assertSame($wP, $notification->getWP());
}