Currently I am working on NIFI-14863 <https://issues.apache.org/jira/browse/NIFI-14863> where I am trying to align the names and display names of both processors and controller services. In order to do this for processors, I realize I need to override the method migrateProperties to rename the name of the properties to their display names. I also realize I can use the TestRunner migrateProperties() method to test if these migrations occurred. What I do not see is how to test controller services which override migrateProperties. How can one programmatically test migrateProperties for controller services to ensure the renaming of properties occurred?
