test: check subscribing to rooms using a whitespace string
fix: prevent subscribing using a whitespace string as the room name
test that users in a room are notified when a user disconnects
remove console.log
fix: name the subscribeClient function correctly
test: check a pomdo is emitted when starting a new one
fix: unnecessary socket.once call
code tidied during code-review
fix: provide a proper test of the pomdo being created and cancelled