Run tests only for source nodes

Hey there! Does anyone know how to run dbt tests for source nodes only? I am familiar with the “–select” flag (e.g. dbt test --select [node_name] ) but is there a way to select based on node type (e.g. ‘source’, ‘model’, ‘snapshot’, etc etc)?

Whoops, I believe there is! I just read the docs. It is:
dbt test --select source:*