Some predefined responses used in many tests.

Master is the master role in a shard.

Slave are servers within the shard that replicate data from the master for data high availabilty purposes.

Unknown represents a state in which the role of the server is still unknown.

SentinelMasterCmdResult represents the output of the "sentinel master" command.

SentinelSlaveCmdResult represents the output of the "sentinel slave" command.

TestableInterface is an interface that both the go-redis and the fake client implement.

Role represents the role of a redis server within a shard.