public function testARawSignedRequestCanBeRetrievedFromCookieData()
 {
     $_COOKIE['fbsr_123'] = $this->rawSignedRequestAuthorized;
     $helper = new FacebookJavaScriptLoginHelper($this->appId, $this->appSecret);
     $rawSignedRequest = $helper->getRawSignedRequest();
     $this->assertEquals($this->rawSignedRequestAuthorized, $rawSignedRequest);
 }