From 9733be1cf4c1bb52cea273a12fb2420595cf95a4 Mon Sep 17 00:00:00 2001
From: Jude Nelson <judecn@gmail.com>
Date: Thu, 15 Jun 2017 22:23:11 -0400
Subject: [PATCH] return None on programmed failure

---
 blockstack_client/backend/drivers/test.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/blockstack_client/backend/drivers/test.py b/blockstack_client/backend/drivers/test.py
index 998e7c3bb..441e23842 100644
--- a/blockstack_client/backend/drivers/test.py
+++ b/blockstack_client/backend/drivers/test.py
@@ -257,7 +257,7 @@ def get_mutable_handler( url, **kw ):
     blockchain_id = kw.get('fqu')
   
     if os.environ.get('BLOCKSTACK_INTEGRATION_TEST_STORAGE_FAILURE') == '1':
-        return False
+        return None
 
     if not url.startswith("test://"):
         # invalid