From 8f8e18b7dc3cb2f50d7354bbb496cdb5ce6c205f Mon Sep 17 00:00:00 2001
From: David Baumgold <david@davidbaumgold.com>
Date: Fri, 29 Aug 2014 13:34:07 -0400
Subject: [PATCH] Handle empty response from server

If the server returns an empty string, we should still raise an OAuthException.
---
 flask_oauthlib/client.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/flask_oauthlib/client.py b/flask_oauthlib/client.py
index 5a34d74e..1a6eefcc 100644
--- a/flask_oauthlib/client.py
+++ b/flask_oauthlib/client.py
@@ -536,7 +536,7 @@ def generate_request_token(self, callback=None):
                 type='token_generation_failed'
             )
         data = parse_response(resp, content)
-        if data is None:
+        if not data:
             raise OAuthException(
                 'Invalid token response from %s' % self.name,
                 type='token_generation_failed'