praekelt/vumi — pull request #428 by hodgestar (2012-11-30 09:34:36+00:00)
Title: Sandbox RedisResource breaks when asked to retrieve keys that don't exist.

```python
Traceback (most recent call last):
File "/home/simon/projects/repos-praekelt/vumi/ve/local/lib/python2.7/site-packages/twisted/internet/defer.py", line 1045, in _inlineCallbacks
result = g.send(result)
File "/home/simon/projects/repos-praekelt/vumi/vumi/application/sandbox.py", line 391, in handle_get
value=json.loads(raw_value)))
File "/usr/lib/python2.7/json/__init__.py", line 328, in loads
return _default_decoder.decode(s)
File "/usr/lib/python2.7/json/decoder.py", line 365, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
exceptions.TypeError: expected string or buffer
```