Increase coverage for MRI 2.3
Created by: yujinakayama
For the missing coverage in https://github.com/rspec/rspec-core/pull/2147
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Created by: yujinakayama
For the missing coverage in https://github.com/rspec/rspec-core/pull/2147