From a561a9d98a20695147361d75deb16252d5016aa5 Mon Sep 17 00:00:00 2001
From: Alex Bilbie <hello@alexbilbie.com>
Date: Mon, 6 May 2013 13:57:46 -0700
Subject: [PATCH] Throw an exception if a grant can't be loaded when called in
 getGrantType

---
 src/OAuth2/AuthServer.php | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/OAuth2/AuthServer.php b/src/OAuth2/AuthServer.php
index 24787c6a..e9e302f5 100644
--- a/src/OAuth2/AuthServer.php
+++ b/src/OAuth2/AuthServer.php
@@ -430,8 +430,12 @@ class AuthServer
      */
     public function getGrantType($grantType)
     {
-        return $this->grantTypes[$grantType];
-    }
+        if (isset($this->grantTypes[$grantType])) {
+            return $this->grantTypes[$grantType];
+        }
+
+        throw new Exception\InvalidGrantTypeException(sprintf(self::$exceptionMessages['unsupported_grant_type'], $grantType), 9);
+        }
 
     /**
      * Get a parameter from passed input parameters or the Request class