refactoring for dependency injection and testability.

laravel/session/memcached.php

@@ -1,23 +1,59 @@
 <?php namespace Laravel\Session;
 
-use Laravel\Cache;
 use Laravel\Config;
 
 class Memcached extends Driver {
 
+	/**
+	 * The Memcache cache driver instance.
+	 *
+	 * @var Memcached
+	 */
+	private $memcached;
+
+	/**
+	 * Create a new Memcached session driver instance.
+	 *
+	 * @param  Memcached  $memcached
+	 * @return void
+	 */
+	public function __construct(\Laravel\Cache\Memcached $memcached)
+	{
+		$this->memcached = $memcached;
+	}
+
+	/**
+	 * Load a session by ID.
+	 *
+	 * The session will be retrieved from persistant storage and returned as an array.
+	 * The array contains the session ID, last activity UNIX timestamp, and session data.
+	 *
+	 * @param  string  $id
+	 * @return array
+	 */
 	protected function load($id)
 	{
-		return Cache::driver('memcached')->get($id);
+		return $this->memcached->get($id);
 	}
 
+	/**
+	 * Save the session to persistant storage.
+	 *
+	 * @return void
+	 */
 	protected function save()
 	{
-		Cache::driver('memcached')->put($this->session['id'], $this->session, Config::get('session.lifetime'));
+		$this->memcached->put($this->session['id'], $this->session, Config::get('session.lifetime'));
 	}
 
+	/**
+	 * Delete the session from persistant storage.
+	 *
+	 * @return void
+	 */
 	protected function delete()
 	{
-		Cache::driver('memcached')->forget($this->session['id']);
+		$this->memcached->forget($this->session['id']);
 	}
 
 }