How to mock redis connection in Go

Question

I am using https://github.com/go-redis/redis package to make Redis DB calls.

For unit testing I want to mock these calls, is there any mock library or way to do it?

Answer 1

Thank you all for the response. I found this package https://github.com/alicebob/miniredis very useful for redis mocking.

Answer 2

It's even easier to mock using miniredis than is apparent. You don't need to mock every function like Get, Set, ZAdd, etc. You can start the miniredis and inject its address to the actual client being used in code (e.g. go-redis) this way:

server := miniredis.Run()
redis.NewClient(&redis.Options{
    Addr: server.Addr(),
})

No further mocking would be required. This also enables you to seamlessly use Pipelined(), TxPipelined() etc. even though miniredis doesn't explicitly expose these methods.