Multi-keys operations are not allowed even when keys generate the same
hash but this will probably be supported in later betas of Redis which
means we will basically end up reusing the whole strategy used for
client-side sharding.
Ported from the v0.8 branch.
We now have a base test case class for Predis (namely PredisTestCase)
grouping various commonly used utility methods shared by all of the
tests in the suite, greatly improving reusability.
We also changed our wording to indentify this kind of abstraction so
instead of using "scripted commands" (kind of broken English) we now
use "scriptable commands".
Daniele Alessandri