public function testChecksAuthenticatedStateBasedOnAvailabilityOfAccessTokenBasedClient()
 {
     $token = $this->getMock('Zend_Oauth_Token_Access', array(), array(), '', false);
     $client = $this->getMock('Zend_Oauth_Client', array(), array(), '', false);
     $token->expects($this->once())->method('getHttpClient')->with(array('accessToken' => $token, 'siteUrl' => 'http://twitter.com/oauth'))->will($this->returnValue($client));
     $twitter = new Zend_Service_Twitter(array('accessToken' => $token));
     $this->assertTrue($twitter->isAuthorised());
 }