In-memory memcached server for testing in Go?

I'm writing tests for some code that uses a memcache client to talk to a memcached instance. I'd like to run a simple mock server for these tests without having to introduce external dependencies such as a memcached installation. Ideally, this would be a simple native Go implementation of a memcached server that I could run in the tests and pre-populate with values. Does something like this exist?