public function testRemovesHubServerUrl()
 {
     $this->subscriber->addHubUrls(array('http://www.example.com/hub', 'http://www.example.com/hub2'));
     $this->subscriber->removeHubUrl('http://www.example.com/hub');
     $this->assertEquals(array(1 => 'http://www.example.com/hub2'), $this->subscriber->getHubUrls());
 }