Ability to mock no connection to server

[Amertz08]

I think it would be useful to mock the errors thrown when you are unable to connect to the redis server. It appears that redis-py throws a ConnectionError with these args ('Error 61 connecting to localhost:6379. Connection refused.',) when it cannot reach the server.

[jamesls]

Seems reasonable. Is someone willing to propose what the API for this would look like?

[Amertz08]

class FakeStrictRedis(object):
    CONNECTED = True

    def set(self, *args):
        if not self.CONNECTED:
            raise ConnectionError('Error 61 connecting to localhost:6379. Connection refused.')
        else:
            # proceed as normal

Just an example I guess. Would need to look at the entire redis-py lib

[Amertz08]

2 years after the fact I've decided I'd give this a shot. Here is what I have so far.