Decode the PLAY_SESSION cookie in a functional test

ParseSesion

   static Pattern sessionParser = Pattern.compile("\u0000([^:]*):([^\u0000]*)\u0000");
   static final String TS_KEY = "___TS";

   private Scope.Session parseSession(String sessionCookieValue) throws UnsupportedEncodingException
   {
      Scope.Session session = new Scope.Session();

      if (sessionCookieValue != null && !sessionCookieValue.trim().equals(""))
      {
         String sign = sessionCookieValue.substring(0, sessionCookieValue.indexOf("-"));
         String data = sessionCookieValue.substring(sessionCookieValue.indexOf("-") + 1);
         if (sign.equals(Crypto.sign(data, Play.secretKey.getBytes())))
         {
            String sessionData = URLDecoder.decode(data, "utf-8");
            Matcher matcher = sessionParser.matcher(sessionData);
            while (matcher.find())
            {
               session.put(matcher.group(1), matcher.group(2));
            }
         }
         if (Scope.COOKIE_EXPIRE != null)
         {
            // Verify that the session contains a timestamp, and that it's not expired
            if (!session.contains(TS_KEY))
            {
               session = new Scope.Session();
            }
            else
            {
               if (Long.parseLong(session.get(TS_KEY)) < System.currentTimeMillis())
               {
                  // Session expired
                  session = new Scope.Session();
               }
            }
            session.put(TS_KEY, System.currentTimeMillis() + (Time.parseDuration(Scope.COOKIE_EXPIRE) * 1000));
         }
      }
      else
      {
         // no previous cookie to restore; but we may have to set the timestamp in the new cookie
         if (Scope.COOKIE_EXPIRE != null)
         {
            session.put(TS_KEY, System.currentTimeMillis() + (Time.parseDuration(Scope.COOKIE_EXPIRE) * 1000));
         }
      }

      return session;
   }