/**
  * Test method for the <tt>getWNS()</tt> and <tt>setWNS($wNS)</tt> functions.
  */
 public function testGetSetWNS()
 {
     $notification = new Notification();
     $this->assertNull($notification->getWNS());
     $wNS = new WNS();
     $this->assertSame($notification, $notification->setWNS($wNS));
     $this->assertSame($wNS, $notification->getWNS());
 }