Generalize exit spec to depend less implementation-specific details
Created by: eregon
For https://github.com/rspec/rspec-metagem/issues/68#issuecomment-1084814368 The spec now passes on TruffleRuby as well.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Created by: eregon
For https://github.com/rspec/rspec-metagem/issues/68#issuecomment-1084814368 The spec now passes on TruffleRuby as well.