Does not respond to field other than state

[supertracer]

I am using a field current_state instead of traditional state field for state machine

field :current_state, type: String
state_machine :current_state, :initial => :scheduled do
    event :patient_arrived do
      transition :scheduled => :waiting
    end
    event :patient_engaged do
      transition :waiting => :engaged
    end
    event :patient_seen do
      transition [:scheduled, :waiting, :engaged] => :seen
    end
    event :undo_arrived do
      transition :waiting => :scheduled
    end
  end

It is throwing error
Failure/Error: it { should have_states :scheduled, :waiting, :engaged, :seen }
Expected state to allow states: scheduled, waiting, engaged, seen

However if i change my field from 'current_state' to 'state' my test case passes.
I could not find any documentation to handle this, is this an issue or is there some workaround

[vtm9]

@supertracer, You should pass the state name:
it { should have_states :scheduled, :waiting, :engaged, :seen, on: :current_state }

[vtm9]

@seuros maybe close this issue?