[Bug] Building from source TestData DB not working

So recently i just installed Grafana into my directory folder using this tutorial http://docs.grafana.org/project/building_from_source/ ,but unfortunately my TestData DB is not working there’s nothing appear https://imgur.com/a/vBqnr7p i just want to enabled it but there’s nothing there so please can someone help me out please.

Grafana v5.3.0

Sincerely,
Fajar

just add it as a datasource