holodeck.patch

diff --git a/Twilio/Tests/Holodeck.php b/Twilio/Tests/Holodeck.php
index 6a67f989..11cc9388 100644
--- a/Twilio/Tests/Holodeck.php
+++ b/Twilio/Tests/Holodeck.php
@@ -1,37 +1,31 @@
 <?php
 
-
 namespace Twilio\Tests;
 
-
 use Twilio\Http\Client;
 use Twilio\Http\Response;
 
 class Holodeck implements Client {
     private $requests = array();
-    private $response = null;
+    private $responses = array();
 
     public function request($method, $url, $params = array(), $data = array(),
                             $headers = array(), $user = null, $password = null,
                             $timeout = null) {
         array_push($this->requests, new Request($method, $url, $params, $data, $headers, $user, $password));
-
-        if ($this->response == null) {
+        if (count($this->responses) === 0) {
             return new Response(404, null, null);
         } else {
-            return $this->response;
+            return array_shift($this->responses);
         }
     }
-
     public function mock($response) {
-        $this->response = $response;
+        array_push($this->responses, $response);
     }
-
     public function assertRequest($request) {
         if ($this->hasRequest($request)) {
             return;
         }
-
         $message = "Failed asserting that the following request exists: \n";
         $message .= ' - ' . $this->printRequest($request);
         $message .= "\n" . str_repeat('-', 3) . "\n";
@@ -39,10 +33,8 @@ class Holodeck implements Client {
         foreach ($this->requests as $candidate) {
             $message .= ' + ' . $this->printRequest($candidate) . "\n";
         }
-
         throw new \PHPUnit_Framework_ExpectationFailedException($message);
     }
-
     public function hasRequest($request) {
         for ($i = 0; $i < count($this->requests); $i++) {
             $c = $this->requests[$i];
@@ -53,21 +45,16 @@ class Holodeck implements Client {
                 return true;
             }
         }
-
         return false;
     }
-
     protected function printRequest($request) {
         $url = $request->url;
         if ($request->params) {
             $url .= '?' . http_build_query($request->params);
         }
-
-
         $data = $request->data
               ? '-d ' . http_build_query($request->data)
               : '';
-
         return implode(' ', array(strtoupper($request->method), $url, $data));
     }
 }